Crop & Pest Report


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Southwest ND (08/15/19)

Information from the Southwest region of North Dakota.

There are pockets in the region that have received large amounts of rainfall and there are pockets in the region that could use some moisture for row crops. According to NDAWN from August 1st to August 12th, Dickinson has received 2.60 inches, Beach 0.91 inch, Hettinger 2.66 inches, and Mott with 1.63 inches. Cool and wet conditions along with the later planting date this spring has delayed harvest for most.

Sunflowers are blooming - now would be the time to take a great Instagram picture and to check for red sunflower seed weevils. Remember that gray sunflower seed weevils and red weevils have different thresholds and management; be sure to distinguish the two. Row crops are looking great; soybeans on station are looking excellent so far. If growing soybeans now would be a good time to check for good nodulation, especially on ground new to soybeans. When breaking open the nodules you should see a pinkish red color inside. If you are not finding nodules and the plants have a light green/yellowish tint there may have been an issue with the rhizobium inoculant and you may need to consider applying N. If there are no nodules and the plant is lush and green, there may have been enough residual N that the plant did not need the rhizobia. Peas and barley are being harvested in the region and canola is close to maturity. There are pockets of disease pressure on small grains throughout the region with the wet conditions. Those that were able to get a timely fungicide application should hopefully see a good return from their decision; however, there are diseases that fungicide would not prevent, such as ergot, throughout the region. Be sure to harvest and store the outside passes separately if high numbers of ergot sclerotia are in the field, since ergot is more likely along the field edges.

Now would be a good time to line up some cover crops to keep the field covered after harvest. With the wet conditions it will be vital, especially in fields with a history of salinity, to keep the soil covered with a living root throughout the fall. Volunteer small grain technically does the job too, but it could potentially be a host for WSMV.



Ryan Buetow

Extension Cropping Systems Specialist

NDSU Dickinson Research Extension Center

This site is supported in part by the Crop Protection and Pest Management Program [grant no. 2017-70006-27144/accession 1013592] from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed are those of the website author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

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