By Scout Nelson
Soybean growers in Nebraska are being advised to closely monitor leaf diseases and correctly identify symptoms before making treatment decisions. Proper diagnosis can help protect yields while avoiding unnecessary input costs.
Bacterial blight and frogeye leaf spot are two soybean diseases that are often confused. While both can cause spots and discoloration on leaves, they differ in severity and management needs.
Bacterial blight typically develops during cool, wet weather and causes irregular brown lesions with yellow halos. Although symptoms may look serious, the disease generally causes limited yield loss and often declines as conditions become warmer and drier.
Frogeye leaf spot is a fungal disease that can have a greater impact on soybean production. It produces gray to tan lesions with dark borders and can spread rapidly when conditions favor disease development.
Fungicide applications may help manage frogeye leaf spot, but growers should consider disease pressure, crop stage, and economic returns before treatment. Unnecessary applications can increase costs without providing significant benefits.
Regular field scouting is essential for effective disease management. Accurate identification allows growers to target treatments appropriately, protect crop health, and maintain profitability.
Photo Credit: gettyimages-gilaxia
Categories: Nebraska, Crops, Soybeans