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Collecting nematode samples from strip trials with nematicides on corn requires a very different approach than sampling fields to diagnose possible nematode damage to corn. This article contains some points to consider when collecting samples to obtain nematode results from strip trials
Isopods have become a new early-season soybean pest in the Midwest. No-till field crops can be attractive to isopods because they are protected under crop residue.
Knowing the description and characteristics of the emerald ash borer (EAB) can help Iowans as they become more vigilant after the first confirmed finding of EAB in Iowa.
Discussion of wet soils in areas of Iowa this spring, questions about nitrogen loss and processes important for potential N loss.
Continued wet soils in some parts of Iowa are raising nitrogen loss questions that are answered with an understanding of biological processes important to potential N loss.
Apply research and common sense when considering whether to tank-mix foliar fungicides with post-emergence herbicide applications.
Sandy fields can be infested with nematodes that damage corn plants very early in the season. Check fields with sandy soils for nematodes in the spring if corn appears stunted and yellow.
Consider lost leaves on frosted corn when applying postemergence herbicides.
By Roger Elmore and Lori Abendroth, Department of Agronomy
A hard freeze last weekend resulted in leaf loss in emerged corn seedlings across central and northern Iowa. Several recent articles in ICM news provide insight on the situation. Photos 1 and 2 here show damage in one field in Story County; corn was at about V2 when the frost occurred.
By Stephen K. Barnhart, Department of Agronomy
Producers must answer a couple of basic questions when deciding the time of the first spring cutting of alfalfa and mixed alfalfa and grass fields. What's your hay harvesting schedule? What are your objectives for the harvested hay crop or forage stand? Harvest schedule decisions tend to be guided by what's most important. Producer objectives may include harvested yield, nutritive quality of the forage, or vigor and persistence of the perennial stand.
