I sprayed late July, before any flower clusters, and failed my concentrates.
So a long time, at least three months from what SC labs tested.
That is fascinating the sun couldn't break it down in that amount of time. Did you only apply it one time, or multiple times? Any chance you submitted a control group that wasn't sprayed? You didnt happen to spray indoor plants near where the outdoor was drying did you?
Reason I ask is we submitted a concentrate test for organic solvents last year, trying to dial in our purging tek. However the samples all failed for acetone, which we dont and have never used, however is commonly used to clean lab equipment.
In short i'm 200% positive there was no acetone in our Shatter (when we dropped it off at the lab), however it failed for it.
One problem with these labs are they are not regulated in any meaningful way. But that is a rant for another day.
here is a sample picture of what SC labs normally test for (bottom left for pesticides/fungicides/pgr):
https://pbs.twimg.com/media/C6XwL77VMAIZbRV.jpg
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4553484/
Saccharopolyspora spinosa
Saccharopolyspora spinosa Mertz and Yao was discovered during a screening program where the insecticidal activity of the isolate A83543 emerged [68]. Subsequent assays highlighted the broad toxicity of specific compounds isolated from the fermentation broth that were given the generic name of spynosins. The major component is spinosyn A, whose structure comprises a tetracyclic polyketide aglycone to which a neutral saccharide substituent is attached [69]. A variety of spinosyn analogs have been isolated and many studies have been conducted to investigate the pathway of spinosyn biosynthesis, which led to the characterization of specific gene clusters [70].
Since the first experimentations, spinosyns exhibited broad-spectrum activity against insect species in different orders, especially Lepidoptera and Diptera [71]. The natural S. spinosa fermentation-derived mixtures were named “spinosad” and contain spinosyn A and spinosyn D, as major and minor component, respectively. The biological activity of numerous semisynthetic derivatives has been studied [72].
The insecticidal mode of action of spinosyns is not completely understood, but is considered unique in comparison with other insecticides. It has been demonstrated their interaction with g-aminobutyric acid receptors and nicotinic acetylcholine receptors, eventually leading to the disruption of neuronal activity and consequent insect paralysis and death [73]. Despite their broad spectrum of activity against insects, spinosyns are associated with a low risk toward non-target species, including mammals and various aquatic organisms, in comparison with other insecticides [74].
The continuous research and industrial interest in this field has recently led to the discovery of a variety of spinosyn-related compounds produced by another Saccharopolyspora species, S. pogona
" Spinosad is broken down rapidly by sunlight. In the presence of sunlight, half-lives on leaves are 2 to 16 days and less than one day in water. When applied to leaves, some spinosad can be absorbed. However, it does not readily spread from leaves to the rest of the plant. In the absence of sunlight, spinosad breaks down very slowly in water. Half-lives of more than 30 days to 259 days have been reported. However, it binds rapidly to sediment. The halflife in sediment, where no oxygen is available, ranges from 161 to 250 days.
Spinosad also sticks to soil and has a very low potential to move through soil towards ground water. In field studies, no break down products of spinosad were found below a soil depth of two feet. In the top layers of soil, spinosad is rapidly broken down by microbes. Soil half-lives of 9 to 17 days have been reported. After it is applied, spinosad is not likely to become airborne."
I called and asked if they do tissue/leaf samples. They said no.........
Curious if manufacture says can be used up to day of harvest o fruits and vegetables why should it be of concern. It's commonly recommended to be used on weed. What would be a better choice and why. Thanks for any info.
Just because something is safe to eat doesn't mean it's safe to smoke.