Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu Mid-April is when plastic mulch laying starts for many of our summer crops. Each year we see problems with low bed pH under plastic mulch. This can result in a range of… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu The following are minimum pHs for various vegetable crops. Crop Min. pH Cucumbers, cantaloupes, squash, pumpkins 5.8 Watermelons 5.5 Tomatoes, peppers, and eggplant 5.8 Cole crops (broccoli, cabbage, cauliflower, Brussels sprouts, kale,… Continue Reading
Jarrod O. Miller, Extension Agronomist, jarrod@udel.edu and Cory Whaley, Sussex Co. Extension Ag Agent; whaley@udel.edu We are observing a range of deficiency issues this year in corn, many of which have similar symptoms. Last week we had some images of… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu As soil pH drops, availability of magnesium and calcium declines while manganese availability increases, often to toxic levels. Below pH of 5.2, the chemistry of the soil changes and aluminum is released… Continue Reading
Jerry Brust, IPM Vegetable Specialist, University of Maryland; jbrust@umd.edu Growers, especially on the Eastern Shore, may already be seeing leaf symptoms on their cantaloupe plants that are often misdiagnosed as a foliar disease. However, these leaf symptoms described below indicate… Continue Reading
