Agronomy Talk




Agronomy Talk: Frogeye Leaf Spot

Frogeye leaf spot (FLS), caused by the pathogen Cercospora sojina, is a common soybean foliar disease of many soybean-producing regions worldwide. In the U.S., the disease is established in southern production regions and has recently become prevalent in the Midwest and Upper Midwest. It’s believed that the range expansion and increased disease severity are caused by widespread planting of susceptible varieties, warmer winter temperatures, and the increased adoption of conservation tillage practices, which, together, lead to increased inoculum levels. FLS does not always cause yield loss, but yield loss of up to 60% has been reported with severe infection rates.

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Agronomy Update

Managing Continuous Soybeans

Over the past few seasons, soybean yields as a whole have been pretty impressive. As a strategy to combat lower grain prices, many farmers are taking a closer look at soybean after soybean, or even continuous soybean, rotations. This is especially true for farmers with acres that may not always be best suited to grow corn. Some things to think about when considering a soybean after soybean scenario are fertility, disease management, planting rate, and weed control. 

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