Photo. Common waterhemp in corn (Credit: Angie Rieck-Hinz, Iowa State University). Note: Tom Peters, Extension Sugarbeet Agronomist with University of Minnesota and North Dakota State University, recently posted the article “ It Didn’t Rain. What is the Fate of my Soil-Applied Herbicide? ” He discusses the effects that the recent dry soil conditions and lack of rain might have on soil-applied herbicides in the article, reprinted below. While the herbicide active ingredients might be different for fields planted to corn and soybean, the effects of dry soils on pre-emergence herbicide activation is the same. In 2017 Lisa Behnken, Crops Extension Educator in southern Minnesota, spoke about these very challenges in corn in this video . The message to use a preemergence herbicide in 2018 was well received for growers with fields where waterhemp is their primary weed. There was a flurry of activity last week to apply preemergence products and to take advantage of the forecast fo...
