ISSUE 11   July 19, 2007

South-Central ND

During the past week (June 11-17), the region received rain ranging from 0 (western counties) to 1.1 inches at Lisbon, based on NDAWN (North Dakota Agricultural Weather Network). The rapid growth of corn and soybean is requiring substantial water. For example, water use by corn and soybean on July 17 was about 0.3 inches, based on estimates from NDAWN. The July 15 hail storm caused severe crop damage in portions of Barnes, Eddy, Foster, LaMoure, Ransom, Sargent, and Stutsman counties.

Winter wheat harvest has started this week and barley is being swathed. Spring wheat is in the dough stage. Leaf disease is prominent in spring wheat while scab is minimal. Early-planted corn is tasseling. The region’s accumulated corn growing degree days continues to be similar to or ahead of the long-term average (range of 0 to 200 units), depending on location and planting dates. European corn borer eggs can be found in corn – larvae will soon be emerging. Soybean is at full flower to pod development (R2-4 growth stages). At these stages, the soybean plant is actively fixing nitrogen, and rapidly taking up nutrients and adding dry matter. Soybean aphid levels continue to be low but scouting should continue until seed is fully developed in pods (R6).

Greg Endres
Area Extension Specialist/Cropping Systems
NDSU Carrington Research Extension Center

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