ISSUE 10   July 6, 2006

Southwest ND

Rainfall of 0.35 inches on Friday kept Dickinson from having the driest June on record. June precipitation of 0.79 inches provided about 22% of normal at Dickinson while at Hettinger 2.24 inches fell during the month of June or 68% of normal. The rest of the NDAWN locations at Hazen, Hettinger, and Mandan reported no precipitation while the remaining stations reported less than a quarter inch for the week. In some local areas, hail destroyed crops completely. Last Thursday, June 29, several locations reported temperatures at or over 100 F. Temperatures above 95 F are expected later this week.

Winter wheat and early seeded spring barley are beginning to mature. Spring wheat seeded prior to mid-April is filling grain while early and mid-May seedings are flowering. Canola flowering is nearly complete. Pastures are dry.

The Dickinson Research Extension Center will be celebrating its Centennial Field Day on Thursday, July 13. The program will provide participants the opportunity to review some of the past and current research at the Center as well as give a glimpse of what the future of agriculture will hold for southwest North Dakota. Additional information on the program is available on the Dickinson Research Extension Center web site:

Roger Ashley
Area Extension Specialist/Cropping Systems
Dickinson Research Extension Center
Dickinson, ND
(701) 483-2349


South-Central ND

During the past week (June 28-July 4), rainfall recorded at NDAWN sites located in the region ranged from less than 0.1 inch (most sites north of Interstate 94) to 0.95 inches (Edgeley). Based on NDAWN estimates, the regionís average daily water use on July 4 ranged from 0.2 to 0.3 inches for wheat, corn, soybean and sunflower. Rainfall continues to be needed across the region.

Warm temperatures and dry weather are accelerating crop development and reducing yield potential. Winter wheat is rapidly reaching maturity and barley is beginning to turn color. Most of the regionís spring wheat is in the seed-development stages. Corn may be tasseling in 1 to 2 weeks, as May 1 planted corn at Carrington was at about 850 growing degree day (GDD) units on July 4, with about an accumulated 1000 GDD units required for tasseling. Soybean are in the R1-R2 stages (flowering). Growers should continue scouting for soybean aphid.

Days for soybean development

As a guide for estimating time in days required for soybean development stages, the table below is an average over two years and two varieties (relative maturity 0.0 and 0.5) at Carrington of days required from soybean planting to selected reproductive stages.

Days from soybean planting to various growth stages, Carrington, 2004-05

VE (plant emerge)

R1 (first flower)

R3 (pod formation)

R5 (seed formation)

R7 (first brown pod)

R8 (seed maturity)







Crop tours

Below is a list of upcoming NDSU crop tours scheduled for south-central and southeast North Dakota:

Tour details may be obtained by contacting the Carrington Research Extension Center (701-652-2951) or NDSU Extension Service county offices.

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

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