Database Research SummariesManagement for new and existing soybean pests
Objectives
There are several emerging pests of soybean in the North Central region which deserve attention. For example, economically damaging populations of native stink bugs are becoming more common in several states. Another insect, thrips, which have always been present in soybean at low levels, have new damage potential as vectors of soybean vein necrosis virus. Background work needs to be completed to diagnose the extent of current problems and prepare a response to the increasing problems.
There is increasing evidence that soybean yield increases between 6-18 percent when pollinators visit these plants, despite being bred for self-fertilization. This research addresses the yield increase potential from these beneficial insects.
Other project goals relate to aphid-resistant soybean varieties, how to make this resistance durable and sustainable, and how they may fit economically into soybean production systems.
Results
The field guide Stink Bugs of the North Central Region was completed and distributed to 12 states in the region, including extension offices and state checkoff boards. Several other publications were completed and distributed to farmers, extension offices and crop professionals including: The Effectiveness of Neonicotinoid Seed Treatments in Soybean, Management of Insecticide-Resistant Soybean Aphids, and Aphid Field Guide.
Bee species were identified, and researchers were pleased with the overall bee and syrphid fly species abundance. These can be relatively abundant and diverse in the monoculture soybean field environment. Their results provide baseline data associated with flowering soybeans in the Midwest and a publication is in development that will include best management practices for conserving pollinators that use soybeans.
Importance
Farmers will benefit from Extension outreach publications distributed throughout the North Central region. Farmers being able to identify invasive pests and beneficial insects will allow for better decisions for pesticide management.
Soybean Aphid Field Guide 2nd edition – North Central Soybean Research Program, Minnesota Soybean Promotion Board, and Iowa State University Extension
Management of Insecticide-resistant Soybean Aphids
New Field Guide on Stinkbugs in the North Central Region
Biology and Economics of Recommendations for Insecticide-Based Management of Soybean Aphid
Update on Breeding for Soybean Aphid Resistance
For more information about this research project, please visit the National Soybean Checkoff Research Database.
Funded in part by the soybean checkoff.
