Project Number: 6217-22000-012-04
Project Type: Specific C/A

Start Date: Sep 01, 2000
End Date: Aug 31, 2005

Objective:
Determine the effects of low temperatures and other environmental constraints in wheat fields during winter months on selected insecticides on their: 1) effectiveness for cereal aphid control, 2) impact on the transmission of barley yellow dwarf disease, and 3) impact on cereal aphid natural enemies.

Approach:
Temperature constraints for effective insecticide use in winter wheat have not been studied, nor has the effect of insecticides on barley yellow dwarf disease incidence and on biocontrol agents. This uncertainty limits the utility of IPM decisionmaking. These issues will be addressed in replicated field studies at locations in Oklahoma over several years. In one study, replicated plots will be artificially infested with greenbugs, and greenbug infestations will be allowed to build under cages. Cages will be removed and insecticides applied under appropriate environmental conditions. The effectiveness will be determined by comparison with untreated controls. In the second study, naturally infested plots will be used. Various cereal aphid species will be monitored. Insecticides will be applied at various times during the growing season, and efficacy and effects on barley yellow dwarf disease and biocontrol agents will be determined by comparison with untreated controls.

Project Team

Kindler, Dean - Dean Elliott, Norman - Norm Tom Royer - Associate Professor, Dept. Entomology 405-624-4141

Project Annual Reports

FY 2003   FY 2002   FY 2001

Related National Programs

Plant, Microbial & Insect Genetic Res., Genomics, & Genetic Improv. I (301)   Crop Protection & Quarantine (304)