Jarrod O. Miller, Extension Agronomist, jarrod@udel.edu Potassium (K) deficiencies have been showing up in a few of our fields. Like nitrogen (N), leaves will start to yellow at the bottom of the plant, but the yellowing should extend along the… Continue Reading
Jarrod O. Miller, Extension Agronomist, jarrod@udel.edu Figure 1. Interveinal Chlorosis in Sussex County Fields As our corn fields have advanced from the V3 to V4 stage, strong visual patterns of chlorosis (yellowing) and interveinal stripes have appeared (Figure 1). This… Continue Reading
Jerry Brust, IPM Vegetable Specialist, University of Maryland; jbrust@umd.edu In the last few weeks several sweet corn fields as well as some watermelon and even a few tomato fields have been found with sulfur deficiencies (Figs. 1 and 2). In… Continue Reading
David Owens, Extension Entomologist, owensd@udel.edu and Jarrod O. Miller, Extension Agronomist, jarrod@udel.edu Congratulations to Ben Coverdale for correctly answering sulfur deficiency on corn. Ben is going to be the proud new owner of a sweep net, to which all sorts… Continue Reading
Gordon Johnson, Extension Vegetable & Fruit Specialist; gcjohn@udel.edu We have seen several cases of magnesium deficiency in vegetables already in 2019. Magnesium (Mg) is considered a secondary macro-element and is essential for plant growth. It is a component of chlorophyll,… Continue Reading
