An Introduction to Closed-Loop Aquaponic Systems – Part 2 – The Nitty Gritty

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Darryl Cotton of Inda-Gro and 151 Farmers continues in the second part of his series on closed-loop aquaponic systems. Now we start setting up our grow media and grow buckets for fish exchange.

If you would like to read part one, click here.

The following is an article produced by a contributing author. Growers Network does not endorse nor evaluate the claims of our contributors, nor do they influence our editorial process. We thank our contributors for their time and effort so we can continue our exclusive Growers Spotlight service.

Before we go into great technical detail as to how a closed-loop aquaponics system works, we should cover what a “151 Farm” is, and why it matters.


What is a 151 Farm?

We picked the name 151 as a way to reference the two main elements of our farms which combine medical cannabis and food. 151 may reference our minimum crop production values of 1 pound of cannabis per 5 pounds of food for 1 community.

1 Pound of Cannabis to
5 Pounds of Food for
1 Community

151 is also an easy way to remember the ideal target ratios relative to the number of fish and their size to the amount of water in the system relative to the plant media bed area.

1 Pound of Fish to
5 Gallons of Water to
1 Sq-Ft of Media Bed

If you would like to learn more about 151 farming, check out our information on our website.


What’s Going on in the Bottoms of Our Buckets?

This is what the bottom of a 5 gallon bucket looks like with a Lava Rock base and a Coco Coir/Soil mix

Here at 151 Farmers, we “feed” our plants using a flood-and-drain setup, otherwise known as “ebb-and-flow.” Because we primarily bottom-feed our plants, lava rock at the bottom of buckets has worked very well for us.

When we flood our flood trays, we don’t let the water run up to more than four inches. This means that all the water that the plant is getting is coming up from the roots. The tap roots seek out the fish water and wrap around and into the lava rock. Additionally, the lava rock at the bottom also allows water to seep into the buckets without any plugging or resistance that you might experience with an all-soil design.

Since the lava rock is porous, it allows beneficial bacteria to live within it. This bacteria consumes nitrites in the fish waste, converting them into nitrates. The expelled nitrates are the macronutrients necessary for happy, healthy and organically grown plants.

Just in case you weren’t following the mutualistic symbiosis, or as a quick reminder, here’s a quick breakdown of aquaponics:

  1. The plants need the fish and the bacteria. Fish fecal matter is critical to meeting the plant’s nutrient needs, and bacteria break the fish matter into usable nutrients.
  2. The fish need the plants and bacteria. Both the plants and bacteria keep nitrite levels low and non-toxic, and also serve as potential food sources.
  3. The bacteria need the fish and the plants for raw sources of food and support.


Let’s Talk Media.

When it comes to what we put on top of the lava rock, we’ve experimented with many different mediums over the years. For some time, we were most comfortable with a coco-coir/soil mix that allowed us to combine the benefits of a soil garden with that of a hydroponic system.

What I’ve always liked about coco coir is that it was loosely packed into our buckets and would expand when it got wet. The downside with Coir was that it didn’t hold moisture very well, so amended soil was added to assist in that.

The coco coir was also sustainable and reusable. This was an important consideration since all materials must perform on an economic and environmental level for these 151 Farms to realize their full potential.

However, over time, most media will get compacted and aeration levels will drop off deep within the media. Because of this, we’ve always been on the lookout for a sustainable, non-compressible media that allows increased aeration throughout the entire root zone.

I used spun-rock media in the past, and was very familiar with the benefits of Grodan and rockwool products. When it comes to maintaining water and nutrients in the root zone, spun-rock type media is outstanding. Unfortunately this media comes in a highly compressed cube or slab which does not lend itself to the full plant root aeration I was looking for in a bottom fed watering system such as ours. But I wasn’t giving up on it.


Let’s Talk Recycling Spun Rock Media.

There were two problems with some of the more common rockwools:

The first thing we encountered was that the binding agent used in the compression process for blocks and cubes is proprietary. Without that information I’m going to risk putting their products into a system where our fish are potentially going to be exposed to chemical agents being released in the water.

The next thing we discovered about them was that they were not truly sustainable. Unless the used media is returned to the manufacturer, where it will then be torn down and reconstituted for resale, it is not being reused at all. That means it ends up in our landfills leaching nutrients into our aquifers. As a media I like spun-rock but these issues are unacceptable.


Growpito Saved Spun Rock Media

Just when I going to give up on spun-rock as a media for our buckets I got a phone call from one of my clients in Michigan, who also grows aquaponically, and he told me about a spun-rock media that he was using with success. When I told him the reasons that I had pretty much given up on spun-rock, he told me check out another company based out of Kansas City, MO. That company is Growpito.

Prior to that, I had never heard of Growpito. What I was able to learn online got me interested. The first thing you’ll notice is that it’s fluffy; it’s not compressed in any way. It’s chemically inert and completely safe for fish. Since it’s in a raw, unprocessed form it does not contain any binders. It’s also a perpetual product. You buy it once and use it over and over again without replacing it. After every harvest you will simply pH the product before using it again. Growpito does not build up salts and as it ages it actually gets better with each harvest.

Having now used their products as a replacement to our Coir/Soil mix, I am happy to report that when using Growpito less is definitely more. Here’s what I can also report:

  1. When you first get Growpito you will need to charge it. This means you get it completely saturated in a tub of 5.5 pH water and really work the water into the media. Once saturated it’s ready to be put into the buckets.
  2. Growpito has black sponge pellets in the mix which is where the beneficial bacteria lives once it has been added at initial planting.
  3. Growpito holds water exceptionally well. We went from summer watering of our outdoor plants once per day to once every 3-4 days. Our indoor cannabis plants get a top water of trace minerals from the dosing tank once every 5-6 days. Nutrient levels have been reduced from what was a 1.5 EC to a 0.5 EC.
  4. The plants really love this media! The fluffy consistency improved the aeration levels in the buckets. Both the plants and I love it!


Stay tuned for the final part of our introduction to closed-loop aquaponics, where we cover other equipment and considerations.


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Resources:

Want to get in touch with Inda-Gro or Darryl Cotton? They can be reached via the following methods:

  1. Website: http://151farmers.org/
  2. Email: orders@inda-gro.com
  3. Phone: (877) 452-2244

Do you have any questions or comments?

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LED Growers’ Guide for Cannabis – Part 1

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LumiGrow has developed a guide, “How to Grow Cannabis with LED Grow Lights”, to instruct growers on how to use LED lighting strategies to maximize profits, boost yields, increase crop quality, and elicit desired plant characteristics. Check out the original PDF on their website if you would like to read the full article!

The following is an article produced by a contributing author. Growers Network does not endorse nor evaluate the claims of our contributors, nor do they influence our editorial process. We thank our contributors for their time and effort so we can continue our exclusive Growers Spotlight service.


Preface on Cannabis


Cannabis is undoubtedly shifting the horticultural industry’s focus as legalization of the high-value crop continues sweeping the world. Traditionally grown using guerilla agricultural tactics, cannabis cultivation is rapidly advancing to incorporate world-class technologies and practices.

As Cannabis enters a new era of cultivation where profit margin compression is driving competition, it has become crucial for growers to explore new strategies for boosting their bottom-line.

The key to success with an LED strategy is to change your cultivation ecosystem by rebalancing abiotic limiting factors to account for differences in light levels. This guide is your roadmap to addressing these limiting factors and deploying a successful LED strategy.


The Basics of Horticultural Lighting

Horticultural lighting has remained rudimentary for the past 60 years. In the late 1950’s and early 1960’s, metal halide and high-pressure sodium (HPS) lights were developed. At that time, their high electrical efficiency, long life span, and relatively broad spectrum provided growers the best option in lighting.

Editor’s Note: Check out our related article on the history of artificial lighting.

The light emitting diode (LED) is the newest generation of lighting technology in the horticultural field. The first LEDs to emit visible light came in the early 1960’s. The past 50+ years have seen many advancements in LED technology. Beginning with LEDs that barely produced enough light to see in a dark room, modern LEDs put out light levels that perform as well as any other horticultural lighting technology on the market. Just as HPS lights were once the most efficient, longest-lasting solution, LEDs now achieve the same horticultural lighting requirements with much higher efficiency and additional functionality.


Differences Between LED and HPS Lighting

HPS Lighting

In high pressure sodium (HPS) lit cultivations, flower development may be related to the temperature of the canopy, as well as other factors. We generally see top-heavy flower development within the canopy, usually to a depth of 18-24”.

LED Lighting

With LED fixtures, the floral morphology becomes distinctly less “top heavy”, as flowers develop more evenly across the vertical crop profile, creating the opportunity for greater total yield. Flowers grown under the LEDs see less variance in plant structure with up to 3 feet of consistent development compared to 18-24” seen with HPS. For this reason, it's important to adjust the temperature in your room to account for less heat, ultimately boosting yields and saving electricity.


Understanding Light’s Characteristics


Light Intensity

Intensity is the amount of light supplied to the plant. Two ways to measure intensity are by using Photosynthetic Photon Flux Density (PPFD) and the Daily Light Integral (DLI).

PPFD

An instantaneous measurement of the number of photons received by a plant that can be utilized for photosynthesis is called the photosynthetic photon flux density (PPFD), measured in micromoles per square meter per second (μmol·m-2·s-1). PPFD is used to understand how much light a plant is receiving at any given moment, and is most often used for indoor cultivation where light fixtures are the only source of light.

DLI

DLI is an important variable to measure in every greenhouse because it influences plant growth, development, yield, and quality. DLI is a daily measurement of the number of photons received in a grow area that can be utilized for photosynthesis. DLI is calculated by looking at total PPFD over a 24-hour period, and is measured in mol*m-2*d-1. It’s especially important to think about light in terms of DLI when growing in a greenhouse where plants are receiving varying amounts of sunlight as well as supplemental lighting.

Calculating your ambient or supplemental DLI is easy using the following equation:


Light Quality

Quality refers to the spectra or wavelengths of light that plants receive. Plants sense wavelengths from ultraviolet (UV) to far red light, 280-800nm, which is described as the range of Photo-Biologically Active Radiation (PBAR). The wavelengths ranging from 400-700nm are used for photosynthesis and are referred to as Photosynthetically Active Radiation or PAR.

Within PAR, blue light is typically defined as including the wavelengths from 400-500 nm, green light from 500-600 nm, and red light from 600-700 nm. In addition to driving photosynthesis, light quality is responsible for other plant responses, such as reducing internodal spacing, regulation of the circadian clock, flowering, crop morphology, as well as cannabinoid and terpene levels.

With LumiGrow lights, light quality can be adjusted throughout the growth stages to control crop growth in a more precise way. It’s important to note that wavelengths outside of the PAR range are used for secondary plant responses.


Photoperiod

Photoperiod is the duration of light a plant receives in a day. Plants are skilled at measuring the length of the day (light period) and the relationship of the day to the night (dark period or scotoperiod). The response to the light-dark cycle is known as photoperiodism. Photoperiod manipulation is commonly used to steer plants from vegetative to reproductive growth.

Cannabis is an obligate short-day plant, meaning that it flowers when the dark period is shifted to a critical length. This translates into a recommended 12 hour photoperiod when lighting cannabis for flowering and 18 hours a day in the vegetative phase.


Learn More

Want to read more about LumiGrow products, or skip the wait for the next set of articles? You can download the PDF here, and read ahead!


Want to check some more LEDs? Click here!


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Resources:

  1. Want to get in touch with LumiGrow? They can be reached via the following methods:
    1. Website: www.lumigrow.com
    2. Phone: 800-514-0487
    3. Email: info@lumigrow.com

Do you have any questions or comments?

Feel free to post below!


About the Author

LumiGrow, Inc., the leader in smart horticultural lighting, empowers growers and scientists with the ability to improve plant growth, boost crop yields, and achieve cost-saving operational efficiencies. LumiGrow offers a range of proven grow light solutions for use in greenhouses, controlled environment agriculture and research chambers.


Cannabichromene – A Cannabinoid with Potential

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Nicolas Burns examines Cannabichromene (CBC)’s therapeutic effects and the chemistry behind it.

The following is an article produced by a contributing author. Growers Network does not endorse nor evaluate the claims of our contributors, nor do they influence our editorial process. We thank our contributors for their time and effort so we can continue our exclusive Growers Spotlight service.

What is Cannabichromene? It is one of 119 different identified cannabinoids that are found in the cannabis plant, and is abbreviated as CBC. But that doesn’t mean much to us, so let’s explore its relevance, both in terms of its pharmacology and its chemistry.


Pharmacology

Like most cannabinoids, Cannabichromene can be used in therapeutic settings and beyond. CBC has been shown to have potential as an analgesic or pain reliever. When ingested, it stimulates the descending antinociceptive pathways and several proteins related to nociceptive control.[7] The nociceptive pathway is a 3-neuron chain that recognizes the pain and informs the brain where the pain is located. Abnormalities in nociceptive pathways can lead to pathological pain (chronic pain). This means that CBC could lend itself in the treatment of pathological pain disorders.[8] Given these results the compound seems promising but it must be thoroughly evaluated.

CBC’s potential role in therapy extends further, as it has been shown to be a possible anti-inflammatory. A study found CBC was just as effective an inflammatory as phenylbutazone (PBZ), but without the toxic side effects. The toxicity of PBZ has resulted in its discontinuation in the US. The authors of the study stated that, given equivalent doses, CBC’s lower toxicity opens up the potential for usage in larger doses.[5] In a separate study, CBC was also shown to reduce gastrointestinal inflammation in specific cases. And, unlike opioids, CBC does not cause constipation.[6]

Furthermore, CBC seems to possess some antimicrobial qualities, described in the literature as “potent” against microbes. The antimicrobial properties were not limited to just common microbes, but also displayed high efficacy against some multidrug resistant strains of S. aureus (MRSA). The mechanism of action is completely different from current antibiotic agents, which may prove useful in treatments down the road. The molecular makeup of the compound could also make it cheap and biodegradable.[9]

Finally the cannabinoid has been shown to be promising as an antidepressant. While THC has shown effectiveness at approximately 2.5mg per kg of body weight, CBC is right behind it at 40-80mg per kg of body weight. The authors of the study stated that, “the non-psychotropic CBC elicited a significant dose-dependant reduction in immobility indicative of antidepressant-like action.”[10] In common parlance, that means that CBC did not have the psychoactive effects of THC, but showed potential as an antidepressant.


Chemistry/Biosynthesis

Cannabichromene (CBC) is the decarboxylated form of Cannabichromene carboxylic acid (CBCA) and one of three major cannabinoids. It is derived from Cannabigerolic Acid (CBGA), which also serves as the precursor to many cannabinoids, including THC, CBD, and CBC.[1]

CBGA being converted into several different cannabinoids. CBC on the bottom pathway. Image Courtesy of Marijuana.com

The enzyme CBCA synthase catalyzes a reaction between CBGA and Cannabinerolic acid.[2] The ratio that these compounds are found in cannabis is determined by the ratio of enzymes and the activity of their respective genes.

Because cannabis is legally considered a Schedule 1 substance, research into the plant’s genome is highly restricted and has been severely delayed.[3] It wasn’t until very recently that a genomic map had been produced for cannabis. More research is necessary to locate the elusive CBCAS or CBCA synthase gene so that direct modification or artificial selection for CBC can occur.


Call to Action

If you are interested in seeing how CBC affects yourself, strains that are typically high in CBC include:

  1. 3 Kings
  2. Jorge’s Diamonds #1
  3. Bediol
  4. Landrace strains from India.

Also, please let us know what other cannabinoids might interest you. Contact hunter@growersnetwork.org to suggest other cannabinoids.


References


  1. Hanuš, L. O., Meyer, S. M., Muñoz, E., Taglialatela-Scafati, O., & Appendino, G. (2016). Phytocannabinoids: a unified critical inventory. Natural product reports, 33(12), 1357-1392.
  2. Morimoto, S., Komatsu, K., Taura, F., & Shoyama, Y. (1998). Purification and characterization of cannabichromenic acid synthase from Cannabis sativa. Phytochemistry, 49(6), 1525-1529.
  3. https://www.dea.gov/factsheets/marijuana
  4. Lu, H. C., & Mackie, K. (2016). An introduction to the endogenous cannabinoid system. Biological psychiatry, 79(7), 516-525.
  5. Wirth, P. W., Watson, E. S., ElSohly, M., Turner, C. E., & Murphy, J. C. (1980). Anti-inflammatory properties of cannabichromene. Life sciences, 26(23), 1991-1995.
  6. Izzo, A. A., Capasso, R., Aviello, G., Borrelli, F., Romano, B., Piscitelli, F., ... & Di Marzo, V. (2012). Inhibitory effect of cannabichromene, a major non‐psychotropic cannabinoid extracted from Cannabis sativa, on inflammation‐induced hypermotility in mice. British journal of pharmacology, 166(4), 1444-1460.
  7. Maione, S., Piscitelli, F., Gatta, L., Vita, D., De Petrocellis, L., Palazzo, E., ... & Di Marzo, V. (2011). Non‐psychoactive cannabinoids modulate the descending pathway of antinociception in anaesthetized rats through several mechanisms of action. British journal of pharmacology, 162(3), 584-596.
  8. Lemke, K. A. (2004). Understanding the pathophysiology of perioperative pain. The Canadian Veterinary Journal, 45(5), 405.
  9. Appendino, G., Gibbons, S., Giana, A., Pagani, A., Grassi, G., Stavri, M., ... & Rahman, M. M. (2008). Antibacterial cannabinoids from Cannabis sativa: a structure− activity study. Journal of natural products, 71(8), 1427-1430.
  10. El-Alfy, A. T., Ivey, K., Robinson, K., Ahmed, S., Radwan, M., Slade, D., ... & Ross, S. (2010). Antidepressant-like effect of Δ9-tetrahydrocannabinol and other cannabinoids isolated from Cannabis sativa L. Pharmacology Biochemistry and Behavior, 95(4), 434-442.

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Resources:

Want to get in touch with Nicolas Burns? He can be reached via the following methods:

  1. LinkedIn: https://www.linkedin.com/in/nicolas-burns-a5368312a/
  2. Email: ndb1776@rit.edu

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About the Author


CRISPR Could Revolutionize the Cannabis Industry

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Amna Shamim gives us an overview of the potential that CRISPR/Cas-9 has in shaping the cannabis industry.

The following is an article produced by a contributing author. Growers Network does not endorse nor evaluate the claims of our contributors, nor do they influence our editorial process. We thank our contributors for their time and effort so we can continue our exclusive Growers Spotlight service.

Humans have engaged in gene manipulation for as long as we’ve had agriculture. We modified plants and animals by selectively breeding the strongest or most desirable plants and animals together. We’ve altered the environmental conditions to encourage stronger, healthier growth in these plants and animals, and in so doing, altered their epigenetics. The Incas used selective breeding to alter crops like potatoes and corn so that they could be grown high up in the Andes mountains, and in other cultures, wild variants of domestic crops may not even exist anymore.

But in the last century, our ability to modify genes has become more direct. In the 1950s and 1960s, scientists modified plants through radiation exposure. While most mutations that occur due to radiation exposure are less than desirable, it represented a first step. Since then, we’ve come a long way to create what we know as Genetically Modified Organisms (GMOs) by extracting and then inserting the DNA of one species into the genes of another unrelated animal or plant using special enzymes discovered in the 1970s, known as restriction enzymes. Foreign DNA can come from any living organism, and be inserted into nearly any other living organism.

So why all this kerfuffle about CRISPR in recent years if we already had the technology?


What is CRISPR?

CRISPR, short for CRISPR-Cas9, is a powerful yet simple tool for editing genomes. CRISPR stands for “Clustered Regularly Interspaced Short Palindromic Repeats” which are specialized sections of DNA with nucleopeptide repeats and spacers. Cas-9 is the enzyme used to cut the DNA, allowing for the insertion of foreign genes. CRISPR enables researchers to modify gene function by altering very specific DNA sequences.

CRISPR/Cas-9 differs from our old methods of gene editing using restriction enzymes because of its specificity. Restriction enzymes can only identify relatively simple sequences (5-20 base pair sequences) and cuts everywhere it finds these sequences in an organism’s genome. You can then feed extra DNA to the host organism cells and hope that in the repair process, the cell picks up the extra DNA and uses it. The result is kind of like a shotgun -- you may hit the target area, but you’re likely hitting nearly everything else too.

Image too small? Click it to see full-size.

CRISPR/Cas-9, on the other hand, can be fed very long and specific DNA sequences so that it only targets a single place on the genome and then directly adds DNA to the cut spot. If restriction enzymes are like a shotgun, then CRISPR/Cas-9 is a sniper rifle.


How Does CRISPR Work in Plants?

CRISPR works the same way regardless of the species. The only differences lie in what traits are introduced, altered, or eliminated. CRISPR has the potential to help plants cope with abiotic stress (stress due to non-biological factors) and resist pests and viruses, reducing the need for pesticides. CRISPR-modified plants could be made genetically unappealing to pests. This has the potential to increase crop yields while minimizing nutrient and chemical use.

Naturally, scientists have already been experimenting with the impact CRISPR could have on current food crops and have successfully edited soybeans, tobacco, tomatoes, and rice. CRISPR has already removed susceptibility to a DNA virus in tomato plants. Modified rice grains has shown elevated crop yields. CRISPR even has the potential to edit out allergens from foods such as peanuts.

Likewise, CRISPR shows serious promise for cannabis. This is partially due to the fact the US Government will not regulate CRISPR-modified plants as long as the modifications are made with related plant DNA (such as other cannabis or hops). The US Government made this decision based on the logic that CRISPR modifications are simply a faster means of achieving the same results as traditional selective breeding would provide. This belief is encouraged by a Japanese study which used CRISPR to modify the color of morning glory flowers in which the second generation of modified plants showed no signs of genetic disruption.


How Will CRISPR Impact the Cannabis Industry?

Sunrise Genetics has mapped out the entire genomes for marijuana and hemp, allowing scientists to identify and target DNA which affects gene expression. These genes could be modified so that your plants express stronger indica or sativa traits, produce more cannabinoids and terpenes, or grow bigger buds. Other characteristics like rapid plant growth, being unappealing to pests, and specific terpenes could be edited into a cannabis plant. CRISPR would also allow us to safely and quickly remove potentially undesirable genes, such as an annoying growth pattern or rapid spoilage.

With CRISPR, the cannabis industry could explode, riding high on the innovation of its growers and the lenient regulation of the US Government. Instead of spending years or decades of trial and error to crossbreed new cannabis strains, new strains with specific, predetermined characteristics could exist within the course of a few plant generations. These new strains would be able to go to market nearly instantly. As more states legalize, CRISPR modifications will give growers a chance to catch up on the time lost from decades of prohibition.

But this is still just a prediction. While CRISPR has incredible potential to change the course of many industries, including the cannabis industry, it hasn’t been put to its full potential yet. While we can all look forward to a day when spider mites and aphids are no longer a concern, right now a good IPM protocol is your best bet for preventing infection, and pesticides are your best bet for removing an infestation.

If you’d like to hasten the research on the cannabis genome and CRISPR application, you can donate to the Cannabis Genome Research Initiative or reach out to other cannabis research laboratories, such as Steep Hill, Sunrise Genetics, or our good friends at Medicinal Genomics. With a little luck and funding, CRISPR will change the cannabis industry in no time.


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Resources:

Want to get in touch with Amna? She can be reached via the following methods:

  1. Website: https://www.amnashamim.com/
  2. Email: amna@amnashamim.com
  3. Instagram: http://www.instagram.com/amnashamimnyc/
  4. Twitter: https://twitter.com/amnashamimnyc

Do you have any questions or comments?

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About the Author

Amna Shamim is a journalist who has written for Glamour, HuffPost, Business Insider, Entrepreneur, and others. She often works with cannabusinesses helping optimize their marketing strategies in the current political climate.


Recent Congressional Legislation Could Open Door to Federally Legal Cannabis

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James Rieger of Tannenbaum Helpern Syracuse & Hirschtritt LLP goes over the recent legislation by Senators Gardner and Warren.

The following is an article produced by a contributing author. Growers Network does not endorse nor evaluate the claims of our contributors, nor do they influence our editorial process. We thank our contributors for their time and effort so we can continue our exclusive Growers Spotlight service.

On June 7th, 2018 bipartisan legislation was introduced in both houses of Congress that would effectively hand the right to regulate the manufacture, production, possession, distribution, dispensation, administration, or delivery of cannabis to the 50 U.S. States and its territories and federally recognized tribes1. If such legislation is ultimately enacted and signed into law by President Trump,2 those business that “touch the plant” in States with permitted adult use or medical marijuana regimes could operate free of fear from Federal prosecution. Additionally, banks and other financial participants (like credit card processing networks) could, for the first time, accept deposits, move money and process transactions related to cannabis. Likewise, the floodgates will presumably open to public and private investment funds and other institutional investors who have found the explosively growing industry too fraught with potential peril. Could the first U.S. IPO of a business that touches the plant3 be far behind?

Despite a majority of the States having enacted (or are in the process of enacting) full adult-use or medical marijuana programs, cannabis is a Schedule I4 (the most restrictive designation) drug on the Controlled Substances Act (“CSA”) alongside hardcore, addictive drugs. Even opiates which have been in the headlines so much lately are on the less-highly-regulated Schedule II to the CSA because they have an accepted medical use and the U.S. Food and Drug Administration (FDA) has largely blocked medical research involving cannabis. Accordingly, there is a head-on conflict between business practices accepted under many State laws and unqualified criminality under Federal law. The proposed legislation would largely give the regulation of cannabis to the States.

The legislation in the United States Senate, known as the “Strengthening the Tenth Amendment5 Through Entrusting States Act” (or the “STATES Act”), is elegant in its simplicity. The STATES Act is only six pages and basically exempts cannabis from the CSA in states that permit the manufacture, production, possession, distribution, dispensation, administration, or delivery of marijuana on either an adult use or medical marijuana basis. Hence no Federal law is broken in those states. The STATES Act also:

  1. Prohibits the use of employees under 18 in marijuana businesses
  2. Still makes illegal the use/sale of marijuana by those under 21 (except in medical marijuana situations)
  3. Completely deregulates industrial hemp6 from a Federal perspective
  4. Revokes the basis for the forfeiture of property
  5. Specifies that the proceeds from any transaction in compliance with the STATES Act shall not be deemed to be the proceeds of any unlawful transaction.


Footnotes

  1. Interestingly, marijuana would continue to be illegal on the Federal level in those States that choose not to enact Marijuana use legislation.
  2. The smart money seems to believe he will sign the legislation if it passes both houses of Congress.
  3. These are common in Canada.
  4. Schedule I drugs have no currently acceptable medical use and a high potential for abuse.
  5. The 10th Amendment of the U.S. Constitution states “the powers not delegated to the United States by the Constitution, nor prohibited by it to the states, are reserved to the states respectively, or to the people.”
  6. Hemp is a form of Cannabis that contains less than 0.3% THC (the psychoactive agent in marijuana).

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Want to get in touch with James Rieger? He can be reached via the following methods:

  1. Website: http://www.thsh.com/
  2. Email: rieger@thsh.com

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About the Author

James Rieger is a corporate law partner at Tannenbaum Helpern Syracuse & Hirschtritt LLP with over 25 years’ experience in the practice of corporate law. James has guided his client in their successful acquisition of a controlling interest in a publicly-traded Canadian cannabis company. James represents public and private companies, hedge funds, merchant banks, private equity funds, exchange traded funds, venture capital funds, investment banks, underwriters, and private investors in many types of transactions, including public and private debt and equity offerings, credit facilities, mergers, acquisitions, fund formation, activist investments, restructurings and divestitures of assets and divisions. James counsels companies and funds on their filings under the Securities Exchange Act of 1934 and their participation in tender offers, proxy contests, and other hostile takeover actions. James also handles general corporate matters, including employment agreements, contracts, cannabis related matters, and joint venture agreements.


The Causes of Yellowing

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Dr. NPK of Elite Garden Wholesale takes through some potential causes of leaf yellowing in cannabis.

The following is an article produced by a contributing author. Growers Network does not endorse nor evaluate the claims of our contributors, nor do they influence our editorial process. We thank our contributors for their time and effort so we can continue our exclusive Growers Spotlight service.


Disclaimer

This article has been republished with permission from Elite Garden Wholesale. The original article can be found here.


Yellowing: Some Causes, and What it Means for your Grow


Hi Guys, Dr. NPK here. People can be green with envy, red with anger (like when my football teams lose!), but most people don’t like to be… yellow? As growers, that’s the most important color we hope to not see! Leaf yellowing is a very vague term that can mean a variety of things to different people. This article is dedicated to helping you understand yellowing: why it occurs, what some potential causes are, and methods you can use to determine the cause.


What Causes Yellowing?


Unfortunately, diagnosing yellowing is extremely difficult. It’s difficult to quickly diagnose issues in your grow due to the sheer number of variables involved. In order to definitively conclude that a given variable is causing the problem, two separate trials must be identical except for the variable being tested. When solving an issue in a living environment, this is often impractical or impossible to do. Below are some of the more well-known reasons that yellowing can occur.

pH Range. In my personal opinion, incorrect pH is one of the most common mistakes people make in their grows. Many growers test the pH of their sumps, but fail to test the runoff pH as well. If there is a significant difference between the two pH’s, it’s likely that something is going awry in your medium/soil. Remember that your ideal pH is between 5.8 and 6.3.

Nutrient pH Availability Chart. Image courtesy of GrowWeedEasy.

Nitrogen Deficiency. In general, there are many nutrient deficiencies that can cause yellowing. By far and away, the most common lacking macronutrient that causes yellowing is nitrogen. Nitrogen is huge in veg because it promotes healthy leaves. Additionally, because nitrogen is a mobile macronutrient, a nitrogen deficiency will appear first in older leaves as they turn yellow, curl, and die off. Nitrogen has a wide pH tolerance as well, and we make sure to include plenty of concentrated nitrogen it in our Elite Base Nutrient A and Elite CalMag.

Do be careful, however. Nitrogen toxicity is a real thing. Symptoms of nitrogen toxicity include:

  1. Darker leaves
  2. Weak stems
  3. Stunted growth
  4. A “claw look” to the leaves.

If you’ve ruled out a nitrogen deficiency as your cause of yellowing, it’s time to look at other nutrient deficiencies.

Yellowing of older leaves due to nitrogen deficiency.

Magnesium Deficiency. One of the common symptoms of a magnesium deficiency is a yellowing of leaves (go figure). Like a nitrogen deficiency, one of the signs is the location of the yellowing. Magnesium is a mobile element, so the plant will ration out its small supply of magnesium to the newer leaves towards the top, where the new growth is. Thus, if you see yellowing towards the bottom of your plants (amidst the older leaves) that are present outside of the veins, consider that a magnesium deficiency might be a possible cause.

Yellowing in outside plant veins due to magnesium deficiency.

Calcium Deficiency. I’ve mentioned this before, but calcium deficiencies are concerning in large part due to calcium’s role in building the cell wall. Calcium behaves extremely different from magnesium, despite being in close in proximity on the periodic table. A calcium deficiency will yield yellow new or younger leaves. This is because calcium is an immobile element, and, as a result, the calcium ion is locked into older leaves and cannot move freely. Thus, leaves will grow in inherently yellow.

Yellowing and spotting on new leaf growth due to calcium deficiency.

Iron/Micronutrient Deficiencies. I chose to lump these together, but basically your cannabis plants require a wide variety of micronutrients and iron to ensure proper growth. Iron is a vital immobile element, so yellowing will first appear in the newer leaves, as with calcium. In general, it is rare to have other micronutrient deficiencies if you are in the right pH and you’re applying the appropriate micronutrients on a regular schedule.

Yellowing on new growth due to iron deficiency.

Diseases/Bugs. Another potential cause of yellowing is biological in origin; diseases and pests can cause yellowing! Bud rot and fungus gnats, to name a few, are potential causes for yellowing in plants. Ultimately, any stress on the plant, even something as simple as too much heat, can cause yellowing of the plant. If you eliminate the chemical/nutrient culprits, then it’s clear that the problem is an environmental stressor or pest.

Example of fungus gnats.


Remedies to Yellowing


Identifying the source of the yellowing is half of the battle! You’re nearly there! The next step is treating the problem.

Obviously, pH adjustment is basically self-explanatory. Use your favorite pH up/down to get to the correct pH. If your media is going bad, switch it out for some fresher material, or get some microbes to help you out.

For nutrient deficiencies, especially those unrelated to N-P-K, take a peek inside your reservoir. Do you see any precipitate (typically in the form of white, solid stuff)? If so, you may be experiencing a nutrient lockout. Nutrient lockout means that the ions in your sump are reacting with one another to make insoluble salts that just chill at the bottom of your reservoir. If you’re getting yellowing and you see a bunch of solid stuff in your tank that you didn’t add intentionally, chances are that nutrient lockout is preventing the contents of your sump from being delivered to the plant! Make sure you are mixing individual nutrients slowly and completely.

Also, consider supplementing your nutrients with a CalMag supplement like Elite CalMag to help supply a variety of secondary nutrients. This will likely help you clear up a variety of nutrient deficiencies one fell swoop. The convenience of using a supplement like this is that it saves you time on “diagnosing” the issue. Instead, you have a blanket solution.

Lastly, if you have an environmental stressor or pest… address that problem first, silly!


Closing Thoughts

Yellowing is a difficult issue to remedy in your grow. It is always worthwhile to take the time to ensure that your pH is within the correct range, your plant has plenty of secondary nutrients and that you are mixing you nutrient correctly to avoid making insoluble salts.


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Resources:

Want to get in touch with Elite Garden Wholesale? They can be reached via the following methods:

  1. Website: https://www.elitegardenwholesale.com/
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About the Author

Dr. NPK has been in the chemical formulating business for over 9 years. With a Bachelors in chemistry from UCLA and a Ph.D. in chemistry from UC Irvine, he has always had a passion for chemical formulation. Over the past several years, his focus has narrowed towards the research and development of products that are optimized for cannabis. He assisted in the development of the Elite Nutrient line and takes great pride in the products he created and uses himself. He has made it his mission to cut through all the pseudoscience available on the web and to educate readers on the science behind growing top-shelf bud.


Automatic Cleanliness Compliance

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In this brief Growers Spotlight, we spoke with Jeff Foster of Shoe Inn Shoe Covers about a means to avoid the “bootie hop.”

The following is an interview with industry experts. Growers Network does not endorse nor evaluate the claims of our interviewees, nor do they influence our editorial process. We thank our interviewees for their time and effort so we can continue our exclusive Growers Spotlight service.

To skip to any section within this article, click the links below:

  • The Product
  • About the Interviewee
  • Resources
  • Comments

  • The Product


    Why shoe covers?

    So I should start by clarifying that Shoe Inn does not manufacture the shoe covers. We also are not the inventor of shoe covers either. That goes back quite a few decades, long before we existed.

    What is unique about what we are doing is the automatic dispensing of shoe covers. See, without an automatic dispenser, employees must stop at the barrier to entry for the facility, sit down, and put on their shoe covers. If there’s no place to sit, then they have to do what we call the “bootie hop.” Needless to say, many employees don’t like the process for comfort or medical reasons, and sometimes it can be unsafe. It’s also time consuming.

    With an automatic dispenser, you basically put your foot in and pull it back out. It’s maybe 2 seconds of your day, bada-bing, you’re done. Same thing goes for the automatic remover. The benefit is that improves the worker’s day, making things simpler and safer, makes life more efficient, and encourages people to comply with standard operating procedures by making life as painless as possible.


    What are some best practices for keeping the grow room clean?

    We’re in the process of learning more about growing, which is part of why we joined Growers Network and attend trade shows regularly.

    But, luckily, best practices for shoe covers are pretty standard. Wherever the entrance is to the cleanroom or rooms you wish to protect, you should have a “gowning room” or locker room in front of it where employees can change out of their street clothes and into their work clothes, or whatever they need to do to clean up prior to entering the facility. The locker room should contain everything you think your employees need to clean up prior to entry, including hair nets, shoe covers, showers, and scrubs or other clothing.

    Our shoe covers help with compliance because the automatic dispensing is so fast. People working with them take less than 3 seconds to apply their shoe covers, rather than having to stop, bend over and “bootie hop” or sit down to apply the covers. One of our best testimonials, ironically, comes from employees complaining when the automatic dispensers get removed for whatever reason. They get used to the convenience and the ease.


    What’s your opinion on the environmental impact of disposable clothes?

    That’s a great question, and it’s related to my degrees.

    In theory, shoe covers can be reused, but they can’t be guaranteed to be clean like they were from purchase. Additionally, they can’t be repackaged for the dispenser apparatus, because that requires some special tools and labor to do.

    Instead, we’re focusing on efforts to make our disposable clothing items biodegradable, so whatever material they’re made out of will biodegrade much faster than they would otherwise. We’re actually experimenting with a biodegradable additive. It’s been a pet project of mine for some time now, and we’re starting to approach the point in time where we could apply it to all of our products.


    What materials are the shoe covers made out of? Can you make them out of hemp?

    Most of our shoe covers are made out of polypropylene non-woven fabric. Nothing is proprietary. Any waterproofing or non-slip version of our items have an additional layer of polyethylene added to them.

    We’ve also looked into using hemp to make the shoe covers. In 2017, a Canadian company approached us about it, and we determined it was scientifically possible to do and keep clean. The problem is that it’s not fiscally reasonable to make hemp shoe covers... yet. We’d have to export hemp from a hemp producing country to our assembly factories in China (and you know how China feels about cannabis), and then ship it to the US. That’s a lot of shipping expenses and hassles that make it economically infeasible to do at this time.


    About Jeff Foster



    Tell me a little bit about your background and education.

    My undergraduate and master’s degrees were both in environmental studies at USC. I focused on environmental and land-use planning, working in the field nearly 8 years after graduation. I was focused on documentation for CEQA and NEPA.

    Since then, I started Shoe Inn over 10 years ago as the Global Product Manager. I’ve been marketing, going to trade shows, and doing everything I can.


    How did the cannabis industry come to your attention?

    About two years ago, one of my former assistants brought it to my attention. Part of our work is finding industries that may have a use for our products, and she learned enough about growing to recommend it. We discovered MJBizCon a bit too late for that year, but we went in Fall of 2017.

    What we’ve seen is that the industry is rapidly evolving and coming of age. People are more concerned about environmental cleanliness in their grows now, and we heard lots of positive feedback from MJBizCon.

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    Want to get in touch with Shoe Inn Shoe Covers?

    You can reach them via the following methods:

    1. Website: https://www.shoeinnshoecovers.com/
    2. Phone: (877) 595-7463
    3. Email: info@theshoecovers.com

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    About the Author

    Hunter Wilson is a community builder with Growers Network. He graduated from the University of Arizona in 2011 with a Masters in Teaching and in 2007 with a Bachelors in Biology.



    A Brief Introduction to the Sociology of Cannabis

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    Alex Kinney follows the sociological studies of cannabis from the early 1900s to the present day, and highlights some of what may lie ahead.

    The following is an article produced by a contributing author. Growers Network does not endorse nor evaluate the claims of our contributors, nor do they influence our editorial process. We thank our contributors for their time and effort so we can continue our exclusive Growers Spotlight service.


    Cannabis Sociology


    The dramatic shift in recent years in the regulation and accessibility of cannabis for consumers has unsurprisingly created a monumental pivot in thought surrounding the plant once considered a central antagonist or “public enemy number one” in Nixon’s “War on Drugs”.1 Unsurprisingly, academics have followed suit, paying increasingly more attention to the role of cannabis in medical, botanical, and social life. Since 1996 when cannabis was legalized for medical use in California, the presence of cannabis as a term in academic articles has spiked over ten-fold from 1970 occurrences to a whopping 22,100 occurrences in 2017. Figure 1 below demonstrates this change. This begs the question, what in the world have we been talking about?

    Figure 1. Use of the Term Cannabis in Research Articles Over Time. Note: Each year is a discrete value meaning that in 1996 there were 1970 new articles published with the key term cannabis, and in 2017 there were 22100 new articles published with the key term cannabis. This figure highlights only one key term for labeling cannabis. Similar searches for prominent alternatives such as “marijuana”, and to a lesser extent, “marihuana” show a similar upward trend in academic research. These figures are available upon request. This figure was produced using Python code borrowed from Strobel (2018).

    Though I don’t presume to be an expert on all things scholarly, the field of sociology has a rich tradition of incorporating cannabis studies into our repertoire. A brief search of the popular online library JSTOR shows that sociologists have published 2608 articles on cannabis since 1929. The purpose of this article article is to serve as an introduction to the sociology of cannabis. Over the next few passages, I will outline what has been explored in sociological research regarding cannabis including the types of impacts this research has had both in the way we think about cannabis and policy, and some new directions that should be undertaken in future research.


    The Foundations of the Sociology of Cannabis: 1920-2000


    The first article that charted the social life of cannabis was an assessment commissioned by the Bombay government to assess the variable differences between cannabis farming practices present in then-colonized India and the West. Mann (1929) described a “peasant” industry where the production of jute — a natural fiber similar to cotton — was concentrated on monopolized farms, leaving the rest of the country to cultivate the production of cheaper, Deccan hemp (Hibisicus cannibus). He later noted that “true hemp (Cannabis indica), though common in many parts of the country, was never grown for fibre, but was cultivated for the intoxicating drug known as hashish or ganja,” codifying an academic division that would persist between industrial cannabis as a capital market as opposed to its use as a personal vice.

    This distinction is important primarily because the bulk of sociological research to date has focused on the consumption of cannabis as opposed to its production. Early titles focusing in on the social influences of cannabis were concerned with impacts on racialized harmony, (2)(3) use of narcotics and psychopathy,4 and “bohemian” culture characterized by “various circles of perversion” including “marihuana, homosexual, hard drinking, or sex-obsessed rings” that were ensnaring the irresponsible youth.5 This unflattering portrayal of cannabis as a social problem mirrored public fervor surrounding children who were swept up in reefer madness, setting the tone for public policy on cannabis for the decades following the 1930s.

    This trend continues until the 1950s when Howard Becker – still considered canonical for introductory sociology students – introduced a fresh, empirical take on cannabis as a socialization process. Becker’s (1953) Becoming a Marihuana User critically outlined that cannabis use was not pathological and deviant, but rather “a sequence of social experiences during which the person acquires a conception of the meaning of the behavior, and perceptions and judgements of objects and situations, all of which make the activity possible and desirable”. Becker posited an at-the-time-provocative thesis that cannabis was not addictive. After an interview study of fifty cannabis users, he asserted that in order to become a routine consumer, cannabis users must:

    1. Learn how to appropriately consume cannabis.
    2. Recognize the effects of cannabis intoxication.
    3. Come to find the effects to be desirable.

    This stark contrast from prior treatments of cannabis attempted to transition the rhetoric of cannabis towards acknowledgment that consuming cannabis represents a unique social practice, relying upon learned behavior that can be enjoyable.

    Still, cannabis continued to harbor a not-so-savory reputation as an object of study for sociologists throughout the 1960s. Research primarily focused on the relationship that cannabis had as a deviant act. Deviance studies during this period were at an apex of popularity, given the groundswell of activism, social justice initiatives, and moral transitions occurring as a result of the countercultural shift in the United States.(6)(7)(8) Cannabis was often lumped into other narcotic studies seeking to make generalized propositions about drug culture.(9)(10)(11) As a result, it is not a far stretch to claim that the sociology of cannabis primarily found its roots in a conservative backlash against the moral panic surrounding the countercultural youth.

    Sociological research in the 1970s and 1980s mirrored this trend as cannabis ultimately became institutionalized as a Schedule 1 substance following the passage of the Controlled Substances Act of 1970. During this period, the criminal justice implications of cannabis use and legal ramifications of cannabis policy came to supplant the consumption of cannabis as the primary object of inquiry in sociology.(12)(13)(14) However, an important and understated shift occurred during this period as, for the first time, sociology began to question the roots of cannabis law. The critical turn in the discipline prompted scholars to start questioning the origins and consequences of unequal applications and frameworks of cannabis policy. (15)(16)(17)(18) Sociologists noticed that cannabis was and is a widespread social token that could highlight differential treatment of race, class, and gender in the criminal justice system. To this end, research shifted subtly towards a recognition on how cannabis had different impacts on different groups of people.

    Though it might be arbitrary to signal that the “contemporary” period of research began in the 1990s, data shows that academic interest in cannabis exploded during this period across disciplines. More academic articles were published during this decade alone (17,700) than from 1950-1990 combined (16121). The explosion in research correlated to the relaxing of cultural attitudes surrounding cannabis. This relaxation in attitudes led to not only a rise in policy shifts leading to the development of the medical cannabis industry, but also increased access to cannabis and cannabis populations for researchers.

    For sociologists, there was a considerable lag during this transition. Cannabis continued to be included as a variable in studies assessing crime risks and drug dependence. Given that the 1990s were (for traditionally advantaged people) a fruitful economic period, sociologists were transitioning away from critical approaches towards the economy as a unit of analysis.19

    A few important studies worked to counteract longstanding political myths surrounding cannabis. Register and Williams (1992) took aim at cannabis stereotypes, provocatively arguing that cannabis use actually increased labor market productivity across a sample of youth. Sociologists began to envision what the economic windfall would look like from a fully regulated cannabis market,20 and notably, got some things wrong arguing that cannabis decriminalization was a “fragile, brief, and limited” reform movement.21 Only two years later California would enact Proposition 215 that legalized access to cannabis for medical patients.


    New Directions in the Sociology of Cannabis


    As regulations firmly shifted in the 2000s and into the 2010s, cannabis has become a multifaceted social construct. But, as Pederson (2009:135) notes, “surprisingly few researchers from sociology or other social science disciplines have investigated cannabis use in recent years.” In the following section, I’ll detail some potential new directions given this critical lapse in attention to one of the oldest and fastest-growing markets.


    Distilling the Plurality of Cannabis: The Sociology of Cannabis as a Multiple Plant

    A persistent feature in sociological cannabis studies was the effort to consider cannabis as a singular, unified object for human consumption. Current research questions this outdated conception of cannabis, and should prompt us to investigate cannabis as a multiple or plural plant. Pioneering work by Rowland and Spaniol (2015:556) pushed us away from thinking of objects as singular, towards the “multiplicity [of] objects that seem singular, but when they are observed in practice, they appear to multiply.” In other words, we can think of cannabis as a singular plant, but at the same time investigate the meaning and consequences of cannabis based on its multiple utilities, social facets, and its unequal impacts on various social groups.

    The new sociology of cannabis should open more interdisciplinary advancements in research that conceptualizes the cannabis plant as the sum of its parts. For example, the rise of CBD-based treatments for medical relief can hardly be partitioned into the same category of use as recreational THC consumption. This type of framework may challenge or expand upon longstanding foundations in the sociology of cannabis such as the process of socialization outlined by Becker in 1953.

    As a result, this framework begs for more sensitivity from sociologists to distill the accurate social nature of cannabis consumption, lest we make erroneous conclusions that produce erroneous science and/or harm the general population through bad policy. In some ways, this framework draws on the foundational work of Mann (1929) who importantly distinguished the different agricultural impacts of cultivating hemp as opposed to its intoxicating uses. New directions in the sociology of cannabis should be open to embracing medical, botanical, biological, and chemical advancements in cannabis research to design studies assessing both the similarities and differences in cannabis use in light of our changing understanding of cannabis as a multifaceted substance.


    Institutional Impacts of Cannabis: Regulations, Policies, and Markets

    While scholars have flirted with the relationship between cannabis and institutional processes, social scientists (and in particular sociologists and economists) have failed to explicitly examine how the exploding commercial industry is impacting political, cultural, and economic institutions. Despite the foundational work that is setting sociologists up to view cannabis as more than a strawman for deviance studies, we have yet to transition towards embracing the commercial cannabis industry as a unique opportunity to explore just exactly how moral goods become embraced and legitimized in society.

    This is not to say that cannabis has achieved a perfectly stellar reputation in the eyes of the general public; rather, after decades of unpopularity, it is clear that we are in the midst of a shift towards international policy reform reflecting changes in the cultural sentiment towards cannabis.22 This asks the question of what the long-term impacts of this shift will have on not just cannabis as a social practice, but also on broader regulations, policies, and markets that will be increasingly intertwined with the cannabis industry.

    Theoretically, institutional studies would benefit from a greater understanding of how contradictory and confusing institutions influence industrial and agricultural regulations, norms, and routines. For example, how does the industry remain viable when there are conflicts between different laws guiding each respective state marketplace, between the state and federal levels where cannabis is simultaneously sanctioned and criminalized, and even between international law where certain countries such as Canada embrace national reform with bordering countries that remain obstinate towards regulatory change? Answering questions such as these will have critical impacts on academic theory about how institutions change and whether they are as stable and enduring as we have though for most of scholarly history.23

    At the policy level, answering these questions should also provide governing bodies the opportunity to see what works and what doesn’t when they are pressured to change their stance on longstanding but flawed policy. While our research is often purposefully or accidentally overlooked by the people that make policy,20 this does not mean that systematic policy recommendations should not be given on the grounds that sociologists are uniquely equipped to answer the how and why questions that follow when an industry such as cannabis forcefully changes its status in society.


    References


    1. Avilés, William. 2017. The Drug War in Latin America: Hegemony and Global Capitalism. Routledge.
    2. Becker, Howard S. 1953. “Becoming a Marihuana User.” American Journal of Sociology 59(3):235–42.
    3. Bourque, Andre. 2018. “Researchers Recognize an International ‘Tide Effect’ Driving Worldwide Cannabis Reform.” Entrepreneur. Retrieved June 11, 2018 (https://www.entrepreneur.com/article/307101).
    4. Caputo, Michael R. and Brian J. Ostrom. 1994. “Potential Tax Revenue from a Regulated Marijuana Market: A Meaningful Revenue Source.” The American Journal of Economics and Sociology 53(4):475–90.
    5. Carey, James T. and Jerry Mandel. 1968. “A San Francisco Bay Area ‘Speed’ Scene.” Journal of Health and Social Behavior 9(2):164–74.
    6. Cohen, Albert K. 1965. “The Sociology of the Deviant Act: Anomie Theory and Beyond.” American Sociological Review 30(1):5–14.
    7. Davis, Fred and Laura Munoz. 1968. “Heads and Freaks: Patterns and Meanings of Drug Use Among Hippies.” Journal of Health and Social Behavior 9(2):156–64.
    8. Galliher, John F., James L. McCartney, and Barbara E. Baum. 1974. “Nebraska’s Marijuana Law: A Case of Unexpected Legislative Innovation.” Law & Society Review 8(3):441–55.
    9. Grupp, Stanley. 1967. “EXPERIENCES WITH MARIHUANA IN A SAMPLE OF DRUG USERS.” Sociological Focus 1(2):39–51.
    10. Grupp, Stanley E. and Warren C. Lucas. 1970. “The ‘Marihuana Muddle’ as Reflected in California Arrest Statistics and Dispositions.” Law & Society Review 5(2):251–69.
    11. Guillen, Maruo F., Randall Collins, and Paula England. 2005. The New Economic Sociology: Developments in an Emerging Field. Russell Sage Foundation.
    12. Johnson, Weldon T., Robert E. Petersen, and L. Edward Wells. 1977. “Arrest Probabilities for Marijuana Users as Indicators of Selective Law Enforcement.” American Journal of Sociology 83(3):681–99.
    13. KOSKI, PATRICIA R. and DOUGLAS LEE ECKBERG. 1983. “Bureaucratic Legitimation: Marihuana and the Drug Enforcement Administration.” Sociological Focus 16(4):255–73.
    14. Mann, H. H. 1929. “The Agriculture of India.” The ANNALS of the American Academy of Political and Social Science 145(2):72–81.
    15. Redfield, Robert. 1929. “The Antecedents of Mexican Immigration to the United States.” American Journal of Sociology 35(3):433–38.
    16. Register, Charles A. and Donald R. Williams. 1992. “Labor Market Effects of Marijuana and Cocaine Use among Young Men.” Industrial and Labor Relations Review 45(3):435–48.
    17. Reuter, Peter. 1986. “Risks and Prices: An Economic Analysis of Drug Enforcement.” Crime and Justice 7:289–340.
    18. Rowland, Nicholas J. and Matthew J. Spaniol. 2015. “The Future Multiple.” Foresight 17(6):556–73.
    19. Scott, W. Richard. 2010. “Reflections: The Past and Future of Research on Institutions and Institutional Change.” Journal of Change Management 10(1):5–21.
    20. Shaw, Claire. 2015. “Unloved and Sidelined: Why Are Social Sciences Neglected by Politicians?” The Guardian, March 11.
    21. Simmons, J. L. 1965. “Public Stereotypes of Deviants.” Social Problems 13(2):223–32.
    22. Snyderman, George S. and William Josephs. 1939. “Bohemia: The Underworld of Art.” Social Forces 18(2):187–99.
    23. Volker Strobel. 2018. Pold87/Academic-Keyword-Occurrence: First Release. Zenodo.

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    Resources:

    Want to get in touch with Alex Kinney? He can be reached via the following methods:

    1. Email: abk5074@email.arizona.edu

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    Feel free to post below!


    About the Author

    Alexander B. Kinney is a PhD Candidate in Sociology at the University of Arizona. His interests mainly lie in advancing institutional theory by exploring the foundations of institutional change, understanding the dynamics of field transformation, and studying the diffusion of technology in emerging and extra-institutional economies. His dissertation explores how individuals in the emerging commercial cannabis industry negotiate contradictory regulations and unclear norms through the use of temporary, "provisional" institutions designed to provide both immediate support for business activities and become obsolete over time.


    Charitable Donation of Canna Oil and Canna Shea Butter

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    In this Growers Spotlight, we interview makers of RSO and Canna-Shea butter, Harry and Bunny, who explain their guiding principles towards donating medicine to patients in need.

    The following is an interview with industry experts. Growers Network does not endorse nor evaluate the claims of our interviewees, nor do they influence our editorial process. We thank our interviewees for their time and effort so we can continue our exclusive Growers Spotlight service.


    Abbreviated Article


    Editor's Note: Growers Network appreciates its readers! If you are limited on time, we are now offering abbreviated versions of our articles. Click below to view.

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    Making RSO and Canna Shea Butter



    Charitable Donation of Cannabis



    Philosophy of Giving

    Why would you risk a loved one’s life doing anything else? A significant volume of research needs to be conducted so that patients and families aren’t experimenting on their loved ones.Harry
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    About the Author

    Hunter Wilson is a community builder with Growers Network. He graduated from the University of Arizona in 2011 with a Masters in Teaching and in 2007 with a Bachelors in Biology.


    An Interview with Tim Cullen

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    We interviewed Tim Cullen, CEO of Colorado Harvest Company, about his growing strategies and business practices. The interview has been edited for brevity and clarity.

    The following is an article produced by a contributing author. Growers Network does not endorse nor evaluate the claims of our contributors, nor do they influence our editorial process. We thank our contributors for their time and effort so we can continue our exclusive Growers Spotlight service.


    About Tim Cullen, CEO of Colorado Harvest Company


    Acknowledged as a pioneer in the cannabis industry, Tim Cullen is the founder, co-owner and CEO of Colorado Harvest Company. The vertically integrated company operates three Denver-area retail cannabis centers, including a flagship location on Denver’s Green Mile, and two cultivation facilities that provide premium, naturally grown cannabis for a medical and recreational customer base estimated at nearly 160,000 for 2017.

    In addition to his roles at CHC, Cullen is a partner in Organa Brands, the parent company of leading cannabis oil production company Organa Labs and the personal vaporizer brand O.penVAPE. In this interview, he shares his unique perspective on cannabis cultivation, industry challenges, and what he expects to see as the industry matures.

    Editor’s Note: If you would like to skip to a subsection of this article, please click the links below:

    1. About Colorado Harvest Company
    2. Industry Views


    Colorado Harvest Company



    Tell us about Colorado Harvest Company’s growing facilities and your cultivation strategy.

    Cullen: We run two facilities. One is 8,000 square feet and one is 10,000 square feet. ... We use a coco growing medium and work in a system called "perpetual production." We're constantly cloning, constantly in veg growth, constantly harvesting, so that every week we turn a harvest out of both of these facilities.

    In terms of overall business strategy, perpetual production is great for the retail stores because it keeps fresh product moving in and keeps things different. ... Perpetual harvest allows me to maintain a constant work force, so I’m not always looking for trimmers and packagers and having to hire people and lay people off at the end of a harvest. I can have this constant work force which makes business function so much easier.

    It’s also security ... You show all these people the inside of your facility and then tell them they don't have a job anymore?


    You describe your products as "natural cannabis." Why and how did that come about?

    Cullen: There was a point in time when we only used OMRI-certified products. OMRI (Organic Materials Review Institute) is the body that reviews pesticides for organic food production. We really wanted to use those products. Then the state of Colorado had this whole to-do with pesticides because the EPA verbiage says that use inconsistent with the labeling is a violation of federal law. And, of course, it doesn't list cannabis as one of the uses.

    The Department of Agriculture in Colorado started to enforce the pesticide rules and came up with what's now called the "approved list." None of those OMRI-certified products made it onto the approved list. So, we went from essentially what could be considered organic farming to be being forced to not do that. We also got a call from [one of the regulatory agencies] saying we could not use the word "organic" because that’s a federally controlled word and federally illegal cannabis cannot use it.

    I wanted some way to convey that we are practicing these same production methods ... So, we landed on the word "natural" instead of organic.


    What kind of production are you achieving with those techniques?

    Cullen: We run about 400 flower lights, and we average 2.7 pounds per light. You can measure it per watt or per foot or per whatever variable you don't want to change. We measure it per light.

    For a long time, the gold standard was 2 pounds per light. But I think the lighting is better and the overall growing techniques are better. We're using a double-ended Gavita light now that's 1100 watts. You can just get better production out of it – you really can. That light is just a superior product to the old-school lights that we grew with for a long time.

    I think nutrient delivery systems and nutrients in general have gotten better. The micronutrients are better. We're able to control the climate so much better. We have sufficient tonnage of HVAC in every room that controls the temperature through the year. So, we’re really able to get a good grasp on our humidity, which controls molds and mildews, so we're able to do a lot of disease prevention.


    What might surprise other growers most about your cultivation techniques?

    Cullen: Agriculture is old. People have been doing it for 4,000 years. I'm not sure that Colorado Harvest Company is doing something mind-blowingly new, but one of the most important things is to keep it pretty simple.

    Most of the pests that attack cannabis plants are decomposers in the natural world. Just by practicing clean techniques inside the grow, you can eliminate almost all of your pests. That means keeping dead and dying leaves off the plants, keeping the floors clean, and that whole concept is wrapped up in Integrated Pest Management.

    Eighty percent of pest issues can be taken care of by keeping the place clean. Everything else is just maintenance after that. Then we use little yellow flytraps as our early detection methods. As soon as we catch something on one of those, we know we have a potential issue. Then we're able to spot treat without having to spray whole rooms or large amounts of rooms.

    We also keep our production areas limited to 1,000 square feet between a wall and another production facility. Even though our warehouses are 10,000 square feet, they're broken up into ten smaller rooms so that we can always isolate and quarantine without having to spray plants that may not have been affected.


    You have three dispensaries. How much of the flower you sell comes from your own grows?

    Cullen: About 90 percent of it. We purchase a little on the wholesale market just to keep things mixed up. People really like to change up the products they buy within the store. They always want something different, so we supplement with wholesale just to keep it a little spicy and have new stuff rolling in.

    We also tie that in to celebrating local cultivators. We sell that as a locally harvested cannabis product, and we celebrate the brand that we purchase that from. We do vendor pop-ups in the store and let the growers hang out and talk about their product. We allow them the chance to build their brand also within that market.


    Industry Views


    What do you see as some of the biggest challenges facing the industry right now?

    Cullen: [Cannabis is] clearly being commoditized. It is about production per gram and how low you can get that price and still turn out a good-looking product.

    It is very different than when we started, which was almost nine years ago. We started in 2009. Our business model is completely different. When we started, there was no Marijuana Enforcement Division, so the rules and regulations are completely different now.

    I really think the future is going to be very similar to alcohol. It's not going to be this vertically integrated model. It's going to look like Coors makes beer, distributors pick it up and retailers sell it. You are going to have brands emerge that become household names. Whether or not you drink Jack Daniels, everyone knows what Jack Daniels is, and you're going to have cannabis brands that move in that direction – but I do not know that you'll have flower products move in that direction.

    I think there'll be some names and strains that catch on, but I'm not sure that branding the flower itself is that big a deal. It seems to be more on the retail side of it; that’s where that play is on the branding part.

    I don't think that's true about any of the other products. People who find an edible product that they like and are comfortable with continue to buy that product over and over. But consumers who primarily like flower are frequently switching that up.


    What other changes do you foresee for the industry?

    Cullen: [...] For all the same reasons that we don't grow oranges in warehouses in Colorado, I don't believe we're going to grow cannabis in warehouses in Colorado for a lot longer either. This greenhouse model is more energy efficient, it's more scalable, and it definitely looks like the way of the future.

    ... What I think will really happen is that federal legalization will happen and you'll be able to move cannabis over state lines.

    There’s a state that’s going to step forward and say, "We can produce cannabis." In Colorado right now, I'd say that it’s Pueblo that is driving the market and the prices down, and it's because of those agricultural production methods.


    What are some things within our control that you would like to see as the industry matures?

    Cullen: I would like to see more industry groups form that allow for a free flow of information. I feel like so many of the good indoor agricultural techniques and cannabis production techniques are held as close company secrets and almost treated like intellectual property within a company.

    Editor’s Note: Speaking of industry groups sharing information… why not apply to join Growers Network today?

    Integrated Pest Management ... should be something everyone in the cannabis industry is practicing and understands, and we have this common language around it, and the regulatory model supports it, and regulators know what those best practices look like.

    When we talk about pest control, ... it should be that these guys can call up the Department of Agriculture and say, "Hey, I have spider mites and I need to kill them because I'm an agricultural producer." The Department of Agriculture should be helpful to those cultivators in making decisions about the best ways to treat those things, instead of this trial-and-error work and using off-label products or products not intended for that use.


    What other ways can we move forward?

    Cullen: For a while, until it was disbanded, I was sitting on a work group with the Colorado Department of Agriculture developing a best practices manual … and then they dropped the program. It really was my hope to be able to complete that little body of work. It was going to be a website and a publication and a phone number to the Department of Agriculture that people could call.

    That idea could still exist; I think Colorado should pick it back up. But I think that local cultivators should move forward with that concept in their local areas – whether that's at a state level or a municipal level – and develop relationships with the regulators about the best practices they're looking for, so everyone is doing similar techniques and there's buy-in.

    Where you get into trouble is when you start coming up with your own ideas about how things should be done and they don't jive with what the regulators think is the best way to do it. Then all of a sudden you find yourself in trouble.


    Any final thoughts you want to share?

    Cullen: I think that people should be aware that federal agencies are going to start moving into their lives. If your facility has not been visited by OSHA, it's a question of when, not if. Setting things up so they are compliant with federal inspectors and work safety standards are really important ideas.

    These aren’t underground grows with a couple of lights; these have to be industrial. They need to have eyewash stations. They need to have the correct bathrooms in them. They need to have lunch spots and the clean areas. All the parts that a professional organization should put together need to be implemented into these spaces.


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