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Posts Tagged: sulfoxaflor
Paper: Evaluating the Utility of an Electrostatic Sprayer and a Tractor Mounted Vacuum for Lygus Management in Strawberry
Former UCCE Entomology Advisor Shimat Joseph and I just had the linked paper below published in Crop Protection.
Excellent overview of the lygus problem in California strawberries and evaluation of a combination of bug-vac use and the insecticide sulfoxaflor (not registered yet, but useful for this study since it actually works) for management of this pest.
A few points out of the paper to take back to the farm:
1- The use of the bug-vac alone was not sufficient to reduce lygus populations to below that of the untreated check.
2- Treatments using the insecticide sulfoxaflor alone and in combination with the bug-vac reduced the numbers of lygus and the number of cat faced fruit.
3- Neither the bug-vac or sulfoxaflor had any effect on predaceous heteropterans and spiders compared to the untreated check.
The implication out of this work and paper is that the use of an effective insecticide will continue to be the best tactic for control of lygus and mitigation of its damage in strawberries.
Link is here, it will be active until the beginning of October:
https://authors.elsevier.com/a/1XWqVxPFYekQG
I-HM-LDES-NM
The Latest Word on the Active Ingredient Sulfoxaflor
As many of you readers know, I have been following pretty closely the progress of the active ingredient sulfoxaflor (label name Sequoia), which was supposed to be registered for strawberries earlier this year but hit a snag.
Here is the latest on this material from the Western Farm Press:
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medium=email&elq2=be11767ced6245b09d250901e55cabb2
The Skinny on the Delayed Sulfoxaflor (Sequioa) Registration
Colleague Shimat Joseph and I happened into CDPR head Brian Leahy at an ANR meeting in Sacramento this past week, and as expected we got to talking about what the hold up is with the sulfoxaflor (Sequioa) registration for control of lygus on strawberries. Readers of this blog know that this is a pretty good material for lygus, and it's been a bit frustrating to not have the registration be approved yet.
Brian helpfully clarified to us that the approval for sulfoxaflor (Sequioa) was vacated in a Federal ruling by the US Court of Appeals for the Ninth Circuit in San Francisco in September.
The ruling was in regards to a lawsuit filed in 2013 against the US EPA, which is responsible for the registration of pesticides in the US (California has an additional layer of regulation through the CDPR), by the beekeeping industry which challenged EPA approval of neonicotinoids, of which sulfoxaflor was ruled to be a subclass.
This last point is arguable, since while sulfoxaflor targets the same receptors in the insect as a neonicotinoid, it belongs to a different class of chemistry, the sulfoxamines.
With regards to future registration of this product, the court said that the EPA "must obtain further data regarding the effects of sulfoxaflor on bees... before it grants approval."
The EPA has yet to formulate a response to this decision.
