Abstract

The soybean aphid (Aphis glycines Hemiptera: Aphididae) is the most economically important insect pest of soybean in the North Central United States. Soybean aphid outbreaks can reduce yield by 40 percent. Foliar insecticides still are the most used management strategy by farmers to protect yield loss when aphid population reaches the economic threshold of 250 aphids/plant. However, resistance to pyrethroid already has been reported, thus there is a need for alternative management strategies. Soybean varieties containing Resistance to Aphis glycines genes (Rag genes) can be an effective strategy to suppress aphids. A pyramid of two Rag genes (e.g., Rag1+Rag2) offers more protection against aphids than a single Rag gene. Despite their effectiveness, Rag varieties are not widely used by soybean producers, partly due to their limited commercial availability. This project partnered with CortevaTM Agriscience to evaluate elite soybean varieties with and without aphid resistance as a means to combat soybean aphid outbreaks.

How to Cite:

Valmorbida, I., O'Neil, M. & Ryan, M., (2021) “Public-Private Partnership to Evaluate Aphid-Resistant Soybean”, Iowa State University Research and Demonstration Farms Progress Reports 9.