Earlier this week south-central and central Nebraska were hit by heavy rains leading to flooding. Now farmers are asking: How long will the crop survive in standing water and what does this mean for the rest of the growing season?
Treatment is not recommended for the painted lady butterfly currently being seen in high numbers and could endanger beneficial insects. Treatment thresholds offer guidance for treating feeding caterpillars.
Since June 30, low levels of adult emergence have been observed from east-central and northeast Nebraska counties from last year’s soybean fields. On July 2 and July 4 adults were found emerging from this year's soybeans in east-central Nebraska.
In Nebraska, soybean gall midge larval injury to soybean has been found in most areas where adult soybean gall midge activity occurred over the past two weeks It is unlikely foliar insecticides will affect this insect.
Japanese beetle adults are beginning to emerge in eastern Nebraska corn and soybeans, as well as landscape trees and shrubs. They will continue to emerge for the next few weeks. This story includes a guide for estimating total defoliation from multiple insects to determine need for treatment in soybean.
Corn nematodes, bacterial leaf streak, and frogeye leafspot, oh my! Extension Plant Pathologist Tamra Jackson-Ziems returns to the Nebraska CropWatch Podcast with information on mid-season corn and soybean diseases.
Soybean gall midge larvae found feeding within soybean plants in east central Nebraska mean foliar applications will likely no longer be effective. In northeast Nebraska, however, they may still be effective for a short time.