NDSU Crop and Pest Report


ISSUE 10   July 8, 2004

South_Central ND

During the past week (July 30 to June 6), the south-central regionís rainfall ranged from 0.38 inches at Wishek to 2.28 inches at Jamestown as recorded at NDAWN (North Dakota Agricultural Weather Network) sites. Soil moisture is generally adequate in the region. Some light hail occurred over the July 4 weekend in Foster, Kidder, and LaMoure counties. The regionís estimated crop daily water use on July 6 for wheat (May 1 emergence), corn (May 15 emergence), soybean (May 29 emergence) and sunflower (June 5 emergence) was 0.03 to 0.17 inches. Water use data is available at the following NDAWN website: http://www.ext.nodak.edu/weather/cropwater/.

Winter wheat is nearing maturity, barley is well into the seed-development stage, and spring wheat is in the heading to early seed-development stages. Yield potential of small grain, canola, field pea, and flax continues to be generally excellent due to cool weather conditions and ample soil moisture. Sunshine and warmer weather continues to be needed for corn, beans and sunflower. Corn growth stages range from 4-8 leaf. As of July 1 at Carrington, we were behind about 140 corn growing degree units (equivalent of about 1.5 leaves) compared to the long-term average for the May through June period. Soybean are beginning to flower.

The decision to apply foliar fungicide to early-flower stage wheat for leaf disease (tan spot, Septoria, and leaf and stripe rust) and scab has become easier for producers due to the generally excellent yield and quality potential, and the increase in disease risk due to wet weather. Check the following website for disease forecasting assistance:


Haying and timely pesticide application (e.g. fungicide on wheat and herbicides on beans and sunflower) continues to be challenging due to frequent rainfall.

Greg Endres.
Area Extension Specialist/Cropping Systems
Carrington Research and Extension Center
Carrington, ND


Northeast ND

Areas in Cavalier, Walsh and Pembina counties received 1 to two inches of rain last week while the rest of the region received around a half inch of rain.

Cool season crops continue to look good. Earliest planted Barley and wheat is flowering , however most is boot stage to heading or less. About 50% of Canola acreage is blooming. Nutrient leaching is causing problems in canola especially in Rolette and Towner counties. Winter wheat is flowering with above average head size. Corn growth continues to fall behind normal expectations. Soybeans are in the second to third trifoliate leaf stage. Much above average temperatures will be necessary for the rest of the growing season for the corn crop to mature. Weed control activities are common in soybean and dry bean. Fungicide application is occurring on earliest planted small grains and canola. No major bug or disease problems to date. Downy mildew is being found in Sunflower with some fields with levels of 25% being reported. Some brown spot of soybean is occurring. Low levels of tan spot, septoria and rust are being found in wheat while net blotch is showing in barley.

Terry Gregoire
Area Extension Agronomist
Devils Lake Area Office

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