Alyssa Koehler, Extension Field Crops Pathologist; akoehler@udel.edu Field Corn Grey leaf spot (GLS) has remained the primary disease showing up in corn. If GLS lesions are becoming widespread in corn that is already past R3, yield potential should not be… Continue Reading
Alyssa Koehler, Extension Field Crops Pathologist; akoehler@udel.edu Root knot nematodes (RKN) are plant pathogenic roundworms that live in the soil. The southern root-knot nematode (Meloidogyne incognita) is common across Delaware and can be yield limiting to soybeans, lima beans, snap… Continue Reading
Mark VanGessel, Extension Weed Specialist; mjv@udel.edu The regional weed scientists have put together a quick reference chart for herbicide options to control the “BIG 3” herbicide-resistant weeds in the region, horseweed or marestail, Palmer amaranth and common ragweed. Use these… Continue Reading
Mark VanGessel, Extension Weed Specialist; mjv@udel.edu I have been asked a number of questions about postemergence spraying for soybeans. First and foremost, weed height should 3-inches or less for maximum control. We have all heard the stories about how an… Continue Reading
Mark VanGessel, Extension Weed Specialist; mjv@udel.edu Be aware that the last day dicamba-soybeans can be treated with a registered dicamba product is June 30. The dicamba products’ registration (Engenia, Xtend, Tavium, etc) state “DO NOT apply after June 30”. In… Continue Reading
