Richard Koelsch
- Emeritus Professor Biological Systems Engineering University of Nebraska–Lincoln
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Except for Iron and Zinc, Application of Micronutrients Often Not Warranted
April 1, 2012
Plants require seven micronutrients: boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), and zinc (Zn). In Nebraska, deficiencies of iron and zinc can be common, depending on soil properties, but deficiencies of the other five micronutrients are rare.
Aphids in Corn and Sorghum
Jenny Rees, extension educator in Clay County, said growers are reporting greenbugs (Figure 1) in sorghum and corn leaf aphids (Figure 2) on corn in south central Nebraska.
Begin Scouting for Western Bean Cutworm Eggs
June 29, 2012
Western bean cutworm moths have been emerging since June 12 at Clay Center. As moth numbers increase, mating will begin and females will begin laying eggs on corn. The appearance of the first moths provides a signal that farmers and crop consultants should begin to scout fields for the white, dome-shaped eggs.