David Owens, Extension Entomologist, owensd@udel.edu
Congratulations to Bob Leiby for correctly identifying the yellowing on the snap bean leaf as hopperburn caused by potato leafhopper. Adults are very active and fly from the foliage at the least disturbance. Small nymphs are about the size of thrips, and pale white-yellow. Thresholds are 5 leafhoppers (adults and nymphs) per sweep.
