Fungicide Resistance and Management of Frogeye Leaf Spot of Soybean in Nebraska
June 24, 2020
The results from field trials suggest an integrated disease management approach including tillage (when practical), crop rotation, resistant varieties, seed treatment, and timely application of mixed-mode of action fungicides provides the best control.
Q & A: What is Causing Problems with Soybean Emergence?
June 4, 2020
The past two weeks, we’ve received a number of calls regarding injured soybean plants during emergence. Additional questions include “What caused this?” and “Do I need to replant?” The following is what we’ve seen thus far.
Corn Ear Development Impacts from Post-emergence Pesticide Applications
June 4, 2020
Corn ear abnormalities have been noted the past few years. Tracing back the information on various field calls often pointed to a misunderstanding of proper growth stages when making post-emergence herbicide applications in addition to pre-tassel fungicide and insecticide applications.
What’s New in Plant Pathology
March 19, 2020
Fungicide resistance was confirmed in soybean samples from 10 Nebraska counties infected with the frogeye leaf spot pathogen. Tar spot, a fungal disease of corn, has been confirmed in numerous western Iowa counties and is likely to reach Nebraska in 2020.
Soybean Disease Update
March 19, 2020
Plants under stress due to environmental factors, such as extreme temperature and moisture are more susceptible to disease, and many were under stress due to the unique environmental conditions in 2019.
Corn Disease Update
January 8, 2020
In 2019, wet weather during the growing season favored the development of numerous corn diseases including Physoderma brown spot, bacterial leaf streak, stalk rot diseases, and ear rot diseases. This update highlights these diseases, the environmental factors that favor their development, and their management.
Why Should You Prepare and Use Crop Budgets?
December 4, 2019
The 2020 Crop Production Budgets for Nebraska are now available. They include 80 budgets for 15 crops, available in both PDF and customizable Excel formats.
Puzzling Out Two Closely Related Corn, Dry Bean Diseases
October 24, 2019
Two closely related plant diseases — one in corn and the other in dry bean — have followed similar, but somewhat perplexing patterns of appearing, disappearing, and then resurging as a serious threat to crop yield. A UNL researcher looks at factors affecting the cycle and whether it can be predicted.