ISSUE 12 July 29, 2009
Rainfall would be welcome in this region, especially in the area north of I-94 and east of Hwy 281. During the period of April 1 to July 26, weather station sites with significant rainfall deficiency compared to the long-term average include Edgeley (-3.0), Streeter (-3.2), Carrington (-4.2), Jamestown (-5.4), and Dazey (-7.0). Growing degree day (GDD) units for corn continue to be behind this season compared to the long-term average. For example, corn planted May 1 has a range of -125 (Streeter) to -305 (Carrington) GDD units for the period ending July 27, compared to the long-term average.
Winter wheat harvest should start the week of August 3. Early-planted barley is near or at maturity and spring wheat is in dough stage. Early-planted soybean and dry bean are in the pod-forming (R3) stage of growth, and sunflower is in the early reproductive stages (R1-2). Scab continues to be difficult to find in small grain but leafspot diseases are increasing in intensity. Sunscald can be found on the underside of soybean leaves and ‘bronzing’ can be found on the leaf topside. Soybean aphids continue to be present at low densities in the region, while a new insect arrival (in dry areas) is spider mites.
Area Extension Specialist/Cropping Systems
NDSU Carrington Research Extension Center