Optimizing buffer strips for insect-derived ecosystem services
Project
Investigator: Dr. Matthew O'Neal Read more about Optimizing buffer strips for insect-derived ecosystem services
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Survey of soybean insect pollinators: community identification and sampling method analysis
Project
Investigators: Dr. Matthew E. O'Neal and Joe Wheelock Read more about Survey of soybean insect pollinators: community identification and sampling method analysis
Effects of cover crop and extended rotations on pest communities
Project
Investigators: Dr. Matthew E. O’Neal, Dr. Aaron J. Gassmann, Mike W. Dunbar Read more about Effects of cover crop and extended rotations on pest communities
Comparing the species composition of beneficial insects across agricultural landscapes
Project
Investigators: Dr. Matthew E. O’Neal and Joe Wheelock Read more about Comparing the species composition of beneficial insects across agricultural landscapes
Determining the impact of induced susceptibility on avirulent soybean aphid populations on resistant soybean
Project
Investigators: Dr. Adam J. Varenhorst, Dr. Matthew E. O'Neal, Dr. Michael T. McCarville Read more about Determining the impact of induced susceptibility on avirulent soybean aphid populations on resistant soybean
Monitoring soybean aphid resistance to lambda-cyhalothrin and identification of mutation associated with insecticide resistance
Project
Soybean aphid management has relied heavily on foliar insecticides to protect yield since 2000. In 2016, performance issues have been documented in commercial fields and research plots in northern Iowa counties. With support from the Iowa Soybean Association, we are exploring insecticide resistance for soybean aphid in Iowa and describing the mechanism of resistance. Laboratory bioassays identified field-collected population’s evolved resistance to pyrethroids. Read more about Monitoring soybean aphid resistance to lambda-cyhalothrin and identification of mutation associated with insecticide resistance
On-farm evaluation of aphid-resistant soybeans
Project
Host plant resistance for soybean aphid is a management tool to protect yield. Our lab has evaluated the efficacy and of host plant resistance but generally with small plot research. Working with Iowan farmers, we evaluated the efficacy of aphid-resistant soybean on commercial farms in Iowa. With funding from the North Central Region – Sustainable Agriculture Research and Education Program, we are studying the potential for aphid-resistant soybeans on a larger scale. We provided farmers with experimental and commercially available soybean varieties containing a 2-gene pyramid (Rag1+2). Read more about On-farm evaluation of aphid-resistant soybeans
Sustainable management of host plant resistance for soybean aphid
Project
With funding from the North Central Soybean Research Program, we are determining if aphid-resistant soybeans can be use with a “refuge-in-a-bag” or RIB. Refuges of pest-susceptible varieties are often included when a pest-resistant variety of a crop is used. By including a refuge, we can produce a population of avirulent aphids so that they can inter-breed and swamp out the genes of virulent aphids that are capable of surviving on the aphid-resistant soybeans. Read more about Sustainable management of host plant resistance for soybean aphid
Effect of crop rotation on the soybean aphid
Project
Longer rotation schemes require less herbicide and reduce frequency of sudden death syndrome in soybean. Crop rotation can alter the soil environment, affecting plant physiology, and may impact insects, like soybean aphid. Read more about Effect of crop rotation on the soybean aphid
Using prairies to reduce interacting stressors on pollinator health
Project
We are exploring how small patches of native, perennial vegetation (i.e., prairie) can increase the abundance and diversity of pollinators within corn and soybean. We observed honey bee colonies in Iowa lose weight beginning in August, when clover and soybean cease blooming. When colonies had access to a prairie from August to October, they were buffered from this late season decline. Read more about Using prairies to reduce interacting stressors on pollinator health