David Owens, Extension Entomologist, owensd@udel.edu Plum curculio and stink bugs are active right now in apples and peaches. Michigan State has a good article eon effective insecticide options here: https://www.canr.msu.edu/news/plum_curculio_management_in_stone_and_pome_fruits. Please note, of the neonicotinoids, only Venom or Scorpion (dinotefuran) have… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu Cucurbits Striped cucumber beetles remain active and should be scouted for. Treatment thresholds are 2 beetles per plant in watermelon. If honeybee hives are going to be placed soon, the best treatment options are foliar… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu and Emmalea Ernest, Scientist – Vegetable & Fruit Crops; emmalea@udel.edu High temperatures (90°F or higher) coupled with clear skies can lead to heat buildup on the surface of black plastic mulched soils.… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu Bolted spinach plant. This variety is not well adapted to spring planting. Bolting is the term used for flower stalk formation in vegetables. Bolting response may be related to temperature, daylength, or… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu Fruits such as apples are prone to alternate bearing. A heavy crop as seen above may lead to a light crop the next year. Biennial or alternate bearing, refers to the tendency… Continue Reading
