Sudden death syndrome often appears in small patches of a field and can be confused with injury from brown stem rot. This story and two field videos examine SDS symptoms and how to differentiate it from other diseases. Once confirmed in a field, management begins with seed selection for the next crop.
Reports of painted lady butterflys have been numerous in rural areas, including in soybeans, causing growers to ask if there's likely to be an increase in their soybean leaf-eating caterpillars. Entomologists discuss this question and the insect's life cycle, and offer a "how-to" on estimating leaf defoliation.
Dropped leaves in soybean fields indicate soybean stem borers are feeding and causing leaf damage. These insects are expanding their range as a pest of soybeans in Nebraska and now can be found in several counties north of I-80.
New agricultural publications from Nebraska Extension include ones on fungicides for soybeans, a primer on cover crops, on-farm research results, agriculture in the Nebraska Panhandle, and ones on estimating soil water deep percolation or run-off.
Winter wheat harvest has been completed across most of Nebraska, according to the July 30 report from USDA’s National Agricultural Statistics Service. Significant rainfall of an inch or more was received across most of the state during the previous week and a few north central counties received as much as four inches of rain.
Spider mite populations are increasing in Nebraska. Fields should be scouted and the species correctly identified to provide proper management. Population levels should also be considered when treating fields with other insecticides that may knock out all natural predators, leading to population explosions of spider mites.