Timothy Waters, twaters@wsu.edu, Ronald Wight, rwight@wsu.edu, and Douglas Walsh, dwalsh@wsu.edu. Washington State University, Department of Entomology, 24106 N. Bunn Rd, Prosser, WA
Seedcorn maggot (SCM) Delia platura (Meigen) (Diptera: Anthomyiidae) can significantly reduce field stand establishment. For dry bean seed treatment with insecticide (ST), over the top (OTT) insecticide application and in furrow (IF) insecticide application were methods tested with several insecticides for control of SCM. A field trial was established on June 25, 2004 near Mattawa, Washington State USA. IF applications were all applied as the dry bean seeds were planted. OTT was applied 3 hrs after planting. Seedling stand establishment was significantly greater in the Cruiser and Poncho ST treatments compared to the untreated check. The Warrior and Lorsban OTT treatments significantly increased stand counts compared to the untreated check. The Fortress IF treatment significantly increased stand counts compared to the untreated check.
Carrot seeds were treated with insecticides prior to planting. The trial was established on May 11, 2005 near Alderdale, Washington State. Treated seeds were placed in a commercial planter and seedling stand counts were made after germination had occurred. Data from this trial is unavailable at the time the abstract was submitted.
Species 1: Diptera Anthomyiidae
Delia platura (Seedcorn maggot)
Keywords: dry bean IPM, carrot IPM