Veronica Yurchak, Vegetable Specialist, UMD; vjohnso4@umd.edu The goal of this series is to increase awareness and knowledge of beneficial insects in cropping systems and to help differentiate them from pests of concern. This week’s feature beneficial is a group of… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Watermelon Be sure to check watermelons coming out of the greenhouse or high tunnel for aphids and for spider mites. Both are much easier to deal with before transplantation into a field. Begin also scouting… Continue Reading
Cole Crops Continue scouting young broccoli, cabbage, and napa cabbage for worms and for flea beetles. The threshold for young plants is a 20% infestation. When plants are young and when caterpillars are young, Bt. should provide excellent control. Flea… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Small Grains Wheat and barley will soon be going in the ground. Crops planted before the ‘Fly Free Date’ (October 3 for New Castle, October 8 for Kent, and October 10 for Sussex) may benefit… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Sorghum For the first time in several years, we have significant sorghum aphid populations at the research station. Thresholds in southern states are 30% infested plants with a dime sized or greater colony of aphids… Continue Reading
