Joanne Whalen, Extension IPM Specialist; jwhalen@udel.edu Alfalfa Continue to sample for potato leafhoppers on a weekly basis. We are starting to see a significant increase in populations and a few fields with yellowing. Once plants are yellow, yield loss has… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu Inking of peaches and nectarines is the appearance of dark colored, blue-black spots on fruit surfaces. While these spots are superficial, they cause the fruits to be unmarketable or be a second… Continue Reading
Joanne Whalen, Extension IPM Specialist; We found our first adult spotted wing drosophila (SWD) flies in our traps in Kent and Sussex Counties this past week. Although there are no thresholds available based on trap catches, it does mean that… Continue Reading
Nathan Kleczewski, Extension Specialist – Plant Pathology; nkleczew@udel.edu Late blight has been reported in a small organic tomato field in Mercer County, New Jersey. Indications are that this is an isolated case, but anyone growing potatoes or tomatoes should continue… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu With the hot, humid weather, we are starting to see evidence of air pollution damage in sensitive vegetable plants. Vegetables most susceptible to air pollution include potatoes, watermelons, cantaloupes, snap beans, pumpkins,… Continue Reading
