Soybean Insects

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soybean pods

Best Management Practices for Soybean Production

This is your unbiased, research-based guide to soybean production to help increase yield, reduce input costs and protect your investment.

All Soybean Insects Content

sun rising over South Dakota field

South Dakota Pest Management Guides

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.

Beef cattle in a snow covered feedlot

SDSU Extension to provide educational sessions during 2025 Dakota Farm Show

December 19, 2024

South Dakota State University Extension will provide a day of educational sessions for crop and cattle producers during the 2025 Dakota Farm Show in Vermillion.

soybean pods

Soybean

SDSU Extension is your partner to increase yields and improve efficiency.

Bottom side of a soybean leaf revealing a sever soybean aphid infestation.

Management Recommendations for Soybean Aphids

In many fields across eastern South Dakota soybean aphid populations have reached economic thresholds, and there have been a lot of questions regarding the best approach to managing the 2024 outbreak.

Small, green teardrop shaped insects on a green, soybean stem with pink flower.

It’s Time to Scout for Soybean Aphids

Small populations of soybean aphids were observed this week while scouting. Early scouting will ensure that populations do not rapidly increase and exceed the recommended economic threshold.

Numerous nymph grasshoppers feeding on corn.

Monitor Crops for Grasshopper Activity

Abundant precipitation throughout much of South Dakota has resulted in less grasshopper observations. However, in areas where grasshoppers were an issue in 2023, they are starting to show up again.

Plastic resealable bag containing larger ash gray blister beetles and smaller Dectes stem borer adults with long antennae.

Dectes Stem Borer Adults Are Active in Soybean

SDSU Extension is again surveying soybean in South Dakota for Dectes stem borer adults. After a slow start this growing season, large populations of beetles were observed in soybeans last week.

People walk through rows of crops with nets

SDSU Extension hosting Integrated Pest Management Field School

July 08, 2024

South Dakota State University Extension will host an Integrated Pest Management Field School on July 23, 2024, by Volga.

Yellow and black beetle on green soybean leaf.

Bean Leaf Beetles Are Active in South Dakota

It’s important to remember early season scouting for bean leaf beetle defoliation. At this time, overwintering bean leaf beetles reach the adult life stage, and they emerge in with an appetite.

Seecorn maggot larva feeding on a seed in a field.

Seedcorn Maggot Degree Day Activity Estimates: June 5, 2024

Peak emergence of the second generation of seedcorn maggots is occurring in a few areas of the state. The rest of the state is between the second and third generation emergences.