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
Throughout the 2023 growing season, grasshopper populations have been causing problems. Those problems aren’t over yet, and we won’t be able to stop monitoring grasshopper activity until the crops are harvested.
Redheaded flea beetles have been observed in soybean fields, causing minor defoliation injury. The defoliation hasn’t reached levels of concern, but overall it should be monitored to ensure that thresholds aren’t exceeded.
We have been observing an increasing number of bean leaf beetles active in soybean during the last week. See our latest observations and management recommendations.
Redheaded flea beetles are now active in soybean. Although they haven’t caused significant defoliation yet, their activity should be monitored, as other defoliating insects are also present in soybean.
Soybean gall midge larvae have been detected in southeastern South Dakota. Although the infestations probably won’t result in plant death in many fields in 2022, the infestations could be a source for soybean gall midge adults in 2023.
We have already observed increased grasshopper activity in many areas of the state and, depending on the 2022 season, they may become problematic in crops.
Soybean gall midge emergence was first detected in South Dakota two weeks ago, during the week of June 13 -17, 2022. Emergence continues to be slow, with the only observations in southeast South Dakota.
Dingy cutworms have been reported in South Dakota crops, and their activity is likely to continue for at least another couple of weeks.
Many types of insects are responsible for some degree of pollination in landscapes. In this article, we will focus on the syrphid fly as both an important pollinator and a beneficial insect predator.