David Owens, Extension Entomologist, owensd@udel.edu Congratulations to Joe Streett for correctly identifying last week’s Guess the Pest challenge as cabbage white, also known as the imported cabbageworm. Joe won a heavy duty sweep net for catching the butterflies and will… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu We have had an increase in bacterial diseases of vegetables that are seed transmitted such as black rot of cole crops. Hot water treatment of seeds is a method to eliminate certain… Continue Reading
Jerry Brust, IPM Vegetable Specialist, University of Maryland; jbrust@umd.edu The unceasing wet weather we have had this summer has made some fall planted cole crop fields vulnerable to cabbage maggots, Delia radicum (CM). The flies that are attacking cole and… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu September-maturing cole crops have been negatively affected by the high August and September temperatures and uneven moisture (dry to wet). While cabbage, kale, and collards can tolerate high temperatures; Brussels sprouts, broccoli,… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu Calcium Deficiency Calcium deficiency is most commonly seen as tipburn of cauliflower, cabbage, and Brussels sprouts. Chinese cabbage (Napa cabbage) is also susceptible to tipburn. This problem can cause severe economic losses.… Continue Reading
