Look Out for Corn Rootworm

At O’Brien County Ag Supply, we began digging corn roots from corn-on-corn fields in late June to look for corn rootworm larvae. Larvae chew on corn roots, causing lodged plants that are unstable in rain and wind events. Rootworm adults feed on silks, which reduces pollination in corn plants. We put roots in a bucket…

GDUs Through the Growing Season

After calculations, there has been 205 cumulative GDUs from planting starting April 19 through May 19. Temperature data for this calculation was taken from AccuWeather for Primghar, Iowa. GDUs stand for “Growing Degree Units,” which are a measurement of the amount of heat needed for a corn plant to reach various developmental stages, such as tassel…