Wednesday, May 14, 2014
Black cutworm traps pick up significant flights
Over the past couple weeks, cooperator-run pheromone traps indicate the potential for localized damaging populations of black cutworm in corn and other crops. Faribault, Lac Qui Parle, Swift and Waseca Counties have had significant captures. Cutting from the earliest of these flights is projected to occur after May 28.
Areas with delayed spring tillage and early season weeds are most attractive for migrant cutworms to lay eggs.
This does not mean insurance insecticide applications are warranted and insecticide rescue treatments work well where economic threshold populations occur.
2014 University of Minnesota Cooperative Black Cutworm Trapping Network newsletters with further information on cutworm biology, scouting, thresholds and control as well as maps of trap captures and cutting predictions can be found at: http://swroc.cfans.umn.edu/ResearchandOutreach/PestManagement/CutwormNetwork/index.htm