Corn Disease

link to Managing Diseases Starts NOW with Seed Selection

Managing Diseases Starts NOW with Seed Selection

November 19, 2020
Now is the perfect time to think about how you can minimize diseases next growing season. Planting disease-resistant hybrids and varieties may be a more economical way to manage certain diseases, reduce disease severity and reduce dependence on pesticides.

Read more

corn stalks showing stalk rot

Check Stalk Quality of Corn Going into Harvest

September 16, 2020
Poor stalk quality can cause stalk lodging and breakage, leading to harvest difficulties. This could cause yield loss and create issues of volunteer corn for next year's crops due to ears lost from lodged corn.

Read more

map showing southern rust in 45 Nebraska counties

Crop Diseases Spreading and Increasing

August 6, 2020
Southern rust continues to spread across eastern Nebraska. To date, southern rust has been reported in 45 Nebraska counties. Gray Leaf Spot, Bacterial Leaf Streak and Frogeye Leaf Spot are increasing as well.

Read more

aerial pesticide application from a plane

Considerations for Foliar Fungicide Use in Corn

July 17, 2020
Fungicide use in corn has become increasingly popular for many farmers for a number of reasons. But, it becomes a more difficult decision when corn prices are low and some producers are looking for ways to reduce input costs when profit margins are narrow.

Read more

Southern rust on a corn leaf

Southern Rust of Corn Confirmed in Southeast Nebraska

July 16, 2020
Southern corn rust was confirmed on corn leaf samples from Fillmore, Nuckolls and Johnson counties in southern Nebraska this week. Warm, humid conditions may favor disease development, so fields in this area should be monitored frequently in the coming weeks.

Read more

Physoderma brown spot lesions

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.

Read more

A comparison of the bacteria that cause bacterial wilt of dry beans and Goss’ wilt of corn. The rods of Curtobacterium (left) in the dry bean wilt pathogen are shorter and fatter than the Goss’ wilt pathogen, Clavibacter (right).
Figure 1. A comparison of the bacteria that cause bacterial wilt of dry beans and Goss’ wilt of corn. The rods of Curtobacterium (left) in the dry bean wilt pathogen are shorter and fatter than the Goss’ wilt pathogen, Clavibacter (right).

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.

Read more

Starburst pattern on Fusarium-infected corn kernels

Crop Diseases Reported by the UNL Plant and Pest Clinic

October 18, 2019
Root, crown and ear rots lead the list of corn and soybean diseases reported in samples submitted to the UNL Plant and Pest Diagnostic Lab from October 1 to October 17.

Read more

Pages