With so several chemical and “biological” pesticides, you may possibly ask if there is something much more organic accessible? For the duration of this series, there has been a single much more addition. It is an extract of a plant associated to the Japanese invasive species – Knotweed. This knotweed extract makes use of terpenes, but largely organic phenols, to repel pests. That is unless a thing else is hiding inside its trade secrets – like synthetic fertilizers.

Regalia Maxx by Marrone Bio Innovations: 20% Extract of Reynoutria Sachalinensis – Giant Knotweed

Infectious tactics

Regalia Maxx’s knotweed-containing pesticide uses tactics meant to induce shock states in the plant recognized as Induce Systematic Resistance (ISR) and Systematic Acquired Resistance (SAR.) Though infection typically induces these responses, in these instances, the pesticide triggered shock state forces the plant getting sprayed to release its personal organic phenols.

These are naturally occurring compounds that cannabis is recognized to generate. A much more effectively-understood group of phenols located in cannabis are recognized as flavonoids. These do denote some flavour, largely employed as bittering agents. They have several other properties that are nonetheless getting explored, although. They repel insects, however can be medicinally useful for us – just like terpenes.


So, why should really you be concerned about a organic pesticide that induces this form of shock?

In no way judge a pesticide by its actives

Lastly, here’s a different organic strategy, even although spraying a flowering crop will normally leave an unpleasant taste and impact in the bud. But we can normally rely on the plants personal organic defences, appropriate? Beyond these difficulties although, how organic is this Knotweed extract?

Other cannabis pesticides claim to use mystery fertilizers but no ingredient has ever been listed in their documents. Now, inert fertilizers ultimately achieve an identity.

Fertilizers that are added lead to mutations when combusted. They are supposedly selected due to Marrone Bio’s fantasy that employing an organic solvent alone is problematic and can lead to microbial contamination.


Poisonous solvents and carcinogenic fertilizers

According to old patents, they very first extract the Knotweed with either normal ethanol or denatured ethanol. They choose the poisonous wide variety mainly because of price, of course, making sure the denaturing agent is not phytotoxic. Who in their appropriate thoughts thinks about human toxicity when formulating pesticides?

Then they add the liquid stabilizer. They choose mixing 25% salt of urea, 18% ammonium nitrate, 20% calcium nitrate, and 10% magnesium chloride into their initial concentrate answer. These can be organic or synthetic stabilizers.

There is as substantially synthetic pee and plant-meals as there are pesticides in this formulation!

A brand they choose is BASFoliar(E) 36 fertilizer.

Knotweed extract

Nitrogen and ammonium containing agents are recognized to lead to cancer if they are combusted. Residuals left behind from sprays or nutrients in poorly flushed buds is why cannabis has been reported to lead to lung harm.

“Their cannabis sample’s smoke yielded ammonia (NH3) at a price of 720 µg per 775 mg cigarette, 20 instances larger than that in tobacco smoke, possibly due to usage of synthetic nitrate fertilizers.”

Russo 2016

Myclobutanil and antifreeze beneath Wellness Canada’s nose

There is a opportunity a different group of fertilizers are integrated, which includes myclobutanil. It is most likely they will not be promoting cannabis producers this hydrogen-cyanide generating item. The technologies is in their active patents although,

“…the mixture comprises (a) an extract derived from the family members Polygonaceae (e.g. Reynoutria sachalinensis) and (b) a single internet site fungicide and/or multi-internet site fungicide which could contain but is not restricted to myclobutanil, quinoxyfen, azoxystrobin, acibenzolar-S-methyl, mefenoxam, triflumizole, fludioxonil, propiconazole… In a most certain embodiment, the antifungal agent is myclobutanil.”

So, to steer clear of banned components they have provided themselves many possibilities, which includes other chemical fungicides and anti-bacterial agents.

The most current, Canadian patent states the inert ingrediants include a pigment, an ethoxylated alcohol, a detergent, a conditioner, antifreeze, and fertilizers.

Banned fertilizers

Foliar fertilizer sprays are now secretly accessible to producers. To add salt to a wound, they can be employed the Day of Harvest. Cannabis flowers can be covered in carcinogenic plant meals. Regardless of this reality, fertilizers are nonetheless banned as a foliar application to steer clear of bacterial or fungal contamination. Actual plant-meals is partly regulated via a distinct physique other than the Pesticide Managment Regulation Agency, based on the fertilizer and how it is employed. An application method, act, and agency we will discover in the subsequent installment on Plant Meals.

Photo Courtesy of CalPhotos. Credit: Dr. Nick V. Kurzenko.

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