This article discusses some of the current insect activity in summer row crops in portions of Kansas. Each insect is discussed and is accompanied by photos.
The recent Arctic-like weather raises some questions about insect pressure for the upcoming growing season, particularly for the western corn rootworm. Will this severe cold snap kill eggs that are currently lying dormant in the field?
Degree-day models are useful tools for estimating the development of different insects, allowing us to predict when potential pests might begin to impact a crop. For the Western Corn Rootworm, degree-day calculations can be used to determine the onset of egg hatch in an area, peak egg hatch, and the timing of adult emergence.
K-State Research and Extension will host a one-hour webinar starting at 9:30 a.m. on February 23, 2020, highlighting nematodes that kill corn rootworm larvae but are safe for plants.
K-State Research and Extension will host a one-hour webinar starting at 9:30 am on February 22 highlighting results from on-farm applications in western Kansas, western Nebraska, and eastern Colorado using nematodes to control corn rootworm larvae.
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.