Bill Cissel, Extension Agent – Integrated Pest Management; bcissel@udel.edu There have been numerous reports of small grain fields with armyworms this week. The threshold for armyworms is 1 per linear ft of row in barley and 1-2 per linear ft… Continue Reading
Bill Cissel, Extension Agent – Integrated Pest Management; bcissel@udel.edu Sawflies and True Armyworms Sample small grain fields for grass sawflies and true armyworms. A sweep net can be a quick and effective way to initially detect grass sawflies. Once you… Continue Reading
Joanne Whalen, Extension IPM Specialist; jwhalen@udel.edu Alfalfa Continue to scout fields for both alfalfa weevil and pea aphids. Economic levels of both can be found in alfalfa fields at this time. As a general guideline, you should consider a treatment… Continue Reading
Joanne Whalen, Extension IPM Specialist; jwhalen@udel.edu Alfalfa If economic levels of alfalfa weevil were present before harvest and you decide to cut instead of spray, be sure to check fields within one week of cutting for damage to the regrowth.… Continue Reading
