Plant growth-promoting (PGP) microbes

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filamentous bacteria

This article is an excerpt from Springer Open Journal. References are included in original article.

Plant growth-promoting (PGP) microbes are rhizosphere associated organisms that colonize the rhizosphere and rhizoplane and improve plant growth when artificially inoculated onto the seeds or into soil. PGP microbes may promote plant growth either by direct stimulation such as iron chelation, phosphate solubilization, nitrogen fixation and phytohormone production or by indirect stimulation such as suppression of plant pathogens and induction of resistance in host plants against pathogens. The opportunities of PGP microbes include alternating applications of PGP microbes as bio-fungicides with inorganic fungicides to manage fungicide resistance and to reduce the number of fungicide applications per year. PGP microbes also plays an important role in inte-run-off of unused fertilizers and the environment damage that results.

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Making the Most of an Efficient HVAC System for Greenhouses

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Efficient HVAC System for Greenhouses

Great article from Cannabis Business Times …

A greenhouse brings a grow closer to the elements, but the same sun that feeds the plants can also push the temperature far past the comfortable range for cannabis.

One main consideration is whether the greenhouse will be “open” or “closed,” says Nadia Sabeh, agricultural and mechanical engineer for consulting/engineering firm Guttmann & Blaevoet. An open greenhouse has some form of air flow from outside the structure, while a closed greenhouse is structured more like an indoor grow and mostly sealed. But even though an open greenhouse has more interaction with outside air, it doesn’t mean the cooling strategy is … just to open a window, she says.

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Making the Most of an Efficient HVAC System for Greenhouses Read More »

Product Spotlight – Foliar Essence

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Foliar Essence

It smells like sweet fermented sugars. Loaded with micronutrients, vitamins, amino acids, enzymes and phytohormones, Foliar Essence rapidly boosts growth rates and can be used in conjunction with any fertilizer regimen.

100% organic and vegan, Foliar Essence is carefully extracted from organic soybeans, organic rice and organic sugarcane to provide a readily absorbable form of supplemental plant nutrients important for healthy plant development and pest-resistance support. This foliar spray is ideal for organic and vegan (those who grow without any animal-based fertilizers or animal-based amino acids) cultivators as well as conventional growing, as it ensures that your propagation gets its maximum nutrients resulting in:

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Product Spotlight – Foliar Essence Read More »

Effect of Aerated Compost Tea on the Growth in Organic Cultivation

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TeaLab

Here we see that Compost Tea is well worth the effort. Four types of compost were brewed and then the available nitrogen was determined, as well as the density of microbial communities, along with their affect on plant growth characteristics.  Across the board it was shown that aerating compost tea released more nutrients, increased microbial counts, and helped plants grow.  Way to go AACT.

Article Courtesy of TeaLab.

Effect of Aerated Compost Tea on the Growth Promotion of Lettuce, Soybean, and Sweet Corn in Organic Cultivation
Journal of Plant Pathology 2015

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Harvest Rain, Harvest Flowers

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Rainwater Tanks

By Lizandro Salazar

As more propositions pass, tax dollars accumulate, and growers slowly creep out of the woodwork, it’s becoming clear that the CA cannabis industry is entering into a new phase.

While regulators scratch their heads trying to figure out how to best approach this topic, it’s clear that “business as usual” may turn into “business unusual.” Many farmers groan as engineering fees, soil tests, and permitting costs raise the price of going “legal”, but some growers and professionals are nodding their heads in approval. What some view as bureaucracy, others see as a opportunity to ‘do things right.’ CA is the leader in agriculture in the US. We grow the food that feeds most of the country using Billions of gallons of water, mixed with countless chemicals. Is the cannabis industry going to follow the same path? Or are we going to create sustainable and resilient systems promoting renewable energy, zero pesticides and water sovereignty? I’d like to think the latter.

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Harvest Rain, Harvest Flowers Read More »

Shilajit – An Ayurvedic Powerhouse

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Often times I get the question, “How do I prevent my plants from getting sick?”. The answer is simple, and that is through plant immunity. In short, there are two primary factors that contribute to plant immunity:

  1. Adequate Mineral Nutrition
  2. Having that nutrition delivered in the form of microbial metabolites

When plants are given these essential needs in the form of microbial metabolites (fulvic acid), they are capable of stacking energy reserves in the forms of fats and waxes known as lipids. These lipids can be recognized as that glossy leaf shine you see in healthy gardens; it coats the leaf surfaces and provides a layer of protection against pests & diseases. For example, in the case of powdery mildew – you’ve just inhaled hundreds of powdery mildew spores since you’ve started reading this article. The reason you’re not falling ill is due to the fact that you’ve got a functional immune system powered by microbiology in your gut. The soil is the gut of the plant; it is the very life line the plant relies on to fend off threats in the field. Plant immunity is directly correlated with disease susceptibility.

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Shilajit – An Ayurvedic Powerhouse Read More »

Product Spotlight – Grass Roots Grow Mats

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The CHA is happy to provide a spotlight on Grass Roots Grow Mats. They’re made from Hemp, which has been cultivated for fiber and food for over 10,000 years around the globe. The beautiful thing about Hemp is that it helps our planet and people throughout its entire life-cycle and then some! 

Grass Roots Grow Mats are now making hemp fiber grow plugs.  The CHA will be running experiments with them over the winter to determine the optimal parameters. Check out Grass Roots Grow Mats at: http://grassrootsgrowmats.com

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One Bad Apple… Plant Growth Hormones and You

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By: Luke A. Besmer

I am sure you’ve heard the old saying about how one bad apple spoils the bunch? Well it’s true, and of all things it’s due to a hormonal imbalance. Who’da thunk? So it turns out that in nature, the first ripe apple of the season drops to the ground and begins to decompose. During the decomposition process, the apple releases a gas called Ethylene. Ethylene is a Plant Growth Hormone (PGH) that triggers the nearby apples to fall to the ground and start the decomposition process. The sweet smell of all those decomposing apples attracts foraging animals who eat the apples and spread the seeds far and wide, often with a little fertilizer to boot (or conversely, to overwhelm scavengers so that some seeds are left undisturbed and able to safely germinate). Ethylene and other Plant Growth Hormones are vitally important to all aspects of plant growth and development, understanding them and their uses can improve any gardener’s yield.

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Cannabis Crop Recomendations

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By Moriah LaChapelle

Here is a wonderful article [offline as of 1/19/2020] to become familiarized with certain techniques and practices associated with Integrated Pest Management (IPM). 

Moriah LaChapell joined Evergreen Growers Supply during 2015 as an Agronomist. She has a Bachelor of Science Degree in Biology from Western Oregon University and a Professional Viticulture Certificate from Washington State University.  She was previously employed at Fisher Farms as the Plant Health Manager. Most of her work at Fisher Farms involved scouting ornamental plants and releasing beneficial insects to reduce insecticide applications. She is passionate about collaborating with growers to produce long term solutions for pests and plant pathogens. You can contact her directly through her website.

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