ISSUE 8 July 3, 2008
During the past week (June 25 to July 1), the region received rain ranging from less than 0.1 inch at Edgeley, Linton, Streeter and Wishek to over an inch at Carrington and McHenry, based on NDAWN (North Dakota Agricultural Weather Network). Additional rain generally would be welcome in the region.
Crop growth continues to accelerate with warm weather. Barley is headed and spring wheat is in boot to flowering stages. Much of the region’s corn will be ‘knee high’ on July 4. Corn planted on May 1 at Carrington is at about 600 growing degree day (gdd) units and Oakes at 725 gdd units as of July 1, with both sites continuing to be behind 80 to 100 gdd units compared to the 5-year average. Soybean is in the 2-trifoliate stage or beyond and will soon start flowering. Sunflower is rapidly growing.
Initial POST herbicide application is near completion in row crops. Wheat foliar diseases are present but continue to be at low incidence. Farmers are making decisions on fungicide application for control of spring wheat leafspot disease and suppression of Fusarium head blight (scab). Currently, scab risk is low but the continued threat of leafspot disease, along with good yield and commodity prices, appear to favor application of foliar fungicide. Small grain aphids have been detected by the south-central ND IPM scout, while soybean aphids have yet to be found.
Area Extension Specialist/Cropping Systems
NDSU Carrington Research Extension Center