Monitor alfalfa weevils using degree days and scouting
Alfalfa weevil activity began early this year in Oklahoma and it appears that degree day accumulation for alfalfa weevils is well ahead of normal for most areas in Kansas. Alfalfa weevil degree days are a great way to estimate insect activity in the field and serve as a useful tool to know when to time scouting. Learn more in this article.
Corn rootworm egg hatch has begun in Kansas
Western corn rootworm resistance to Bt corn continues to be an issue in continuous corn in the United States. Evaluating corn roots for rootworm damage during the growing season is highly recommended. Eggs should begin hatching after approximately 380-degree days have accumulated. Learn more in this article.
July weather summary for Kansas - A cool start, a hot finish
In an eUpdate article last month, we examined the counts of 90-degree days across Kansas this summer. However, a recent stretch of hot weather has nearly erased the negative departure for the first three weeks of July. This article summarizes the month of July in terms of temperature and stress degree days.
Corn rootworm egg hatch has begun in Kansas
Corn rootworm degree day accumulation for the northern half of Kansas is ahead of the same time last year, and egg hatching should begin in one to two weeks in most locations. Southern portions of Kansas are just slightly behind last year. Evaluating corn roots for rootworm damage during the growing season is highly recommended.
Corn rootworm egg hatch has begun in Kansas
Corn rootworm egg hatch is beginning across Kansas, with peak hatch expected in the coming weeks. This article explains how to track degree day accumulation, when to begin scouting for root damage, and why evaluating Bt trait performance is critical, especially in continuous corn systems where resistance is an ongoing concern.
insects corn corn rootworm western corn rootworm degree days