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Efficacy and Yield Impacts of Registered and Experimental Acaricides in California Cotton

K. E. Keillor and L. D. Godfrey


 
ABSTRACT

Selected registered and experimental acaricides were compared in terms of efficacy on spider mites, Tetranychus spp. and capacity to protect cotton yield from losses from spider mites in studies conducted from 1995 to 2000. Zephyr continues to provide excellent spider mite control in California cotton; however, in many cases the residual control does not appear to be as long as it was in the mid-1990’s. Resistance to Kelthane and Comite is present in the SJV, but appears to be manageable allowing these products to have a fit in cotton production. Savey fills an important niche as a resistance management tool. Experimental products, including Acramite and the V-1283 compound, look promising and will provide additional management tools. Given the propensity of spider mites to develop resistance to pesticides, multiple tools are needed to enhance long-term management.





Reprinted from Proceedings of the 2001 Beltwide Cotton Conferences pp. 1100 - 1103
©National Cotton Council, Memphis TN

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Document last modified XXXXXX, XXX XX 2001