CRANBERRY PEST MANAGEMENT WITH OP ALTERNATIVE INSECTICIDES

There have been ongoing regulatory and environmental concerns over the use of organophosphates (OP) for management of cranberry insects.
Obtaining efficacy with non-OP alternatives, however, has been problematic due to the use of chemigation as the predominant application method.
Control of several key pests with alternative chemistries was assessed.
The insecticides imidacloprid, clothianidin, chlorantraniliprole, metaflumizone and thiamethoxam were evaluated for larvicidal efficacy on blackvine weevil (Otiorhynchus sulcatus) (BVW). Imidacloprid, clothianidin, metaflumizone and thiamethoxam were effective on sand beds.
Results for imidacloprid and clothianidin on peat beds indicated reduced efficacy.
Trials on tipworm (Dasineura oxycoccana) (TW) were conducted comparing the efficacies of Bacillus thuringiensis Berliner subsp. israelensis (Bti), chlorantraniliprole, flubendiamide, metaflumizone and spirotetramat to diazinon.
None of the alternative insecticides provided consistent significant control on par with diazinon.
The insecticides acetamiprid, chlorantraniliprole, flubendiamide, indoxacarb, metaflumizone, novaluron, pyridalyl, spinosad, spinetoram, and thiacloprid were evaluated for efficacy on blackheaded fireworm (Rhopobota naevana) (BHFW) larvae.
All of these new chemistries, except chlorantraniliprole, had reasonable efficacy on BHFW when applied with low to high-volume broadcast methods.
Compared to diazinon, the efficacies of flubendiamide and metaflumizone were compromised for chemigation applications.

IX International Vaccinium Symposium

K. Patten, C. Metzger

Vaccinium macrocarpon, blackheaded fireworm, blackvine weevil, cranberry tipworm

https://doi.org/10.17660/ActaHortic.2009.810.53