This is your unbiased, research-based guide to soybean production to help increase yield, reduce input costs and protect your investment.
The South Dakota Pest Management guides are now available for free. The guides offer recommendations for controlling weeds, insects, and diseases in a variety of South Dakota crops.
All Soybean Insects Content
SDSU Extension publishes the South Dakota Pest & Crop Newsletter to provide growers, producers, crop consultants, and others involved in crop production with timely news pertinent to management of pests, diseases, and weeds in South Dakota.
Have you noticed lower soybean yielding areas in your field? Soybean cyst nematode may be to blame. Fall, and especially after soybean harvest, is the best time to sample soil and have it tested for soybean cyst nematode.
An additional soybean defoliator to monitor this week is the redheaded flea beetle. Although these beetles are typically not a serious soybean pest, large populations can result in considerable defoliation.
We have received reports of bean leaf beetles feeding on soybean in a couple different areas of the state. Bean leaf beetles go through two generations each year in South Dakota. Adult bean leaf beetles can vary in color from brown, yellow and orange to red.
During the last two weeks we have received reports of increasing numbers of small white insects present on soybean. The insects in question are whiteflies.
Several counties in South Dakota are experiencing dryer than normal conditions, therefore, it is important to monitor crops for spider mites, as they thrive during periods of dry weather.
Most of Eastern South Dakota is experiencing very low grasshopper populations. However, this is not the case for many areas in Central and Western South Dakota.
As wheat harvest is underway it is important to ensure that grain bins are prepared in the best possible manner to prevent insect infestations. There are seven steps that can be taken to help reduce the chances of having infested grain.
It’s that time of the season when numerous defoliating insects can be observed in a single soybean field. Most of the defoliators at this time are green cloverworms and alfalfa caterpillars.
Many of our summer insect pests overwinter in the Southern U.S. and rely on wind currents to travel north in the spring and summer. The thistle caterpillar is one of those pests.