Crop & Pest Report
The following is from an email thread with Dr. Kirk Howatt, NDSU Weed Scientist.
Maps detailing corn accumulated daily growing days, percent normal rainfall, departure from normal average air temperature, and accumulated wheat growing degree days.
Information from the Northeast region of North Dakota.
The following is from a ND grower who has made an interesting observation. It may be too late to rectify these ‘trespasses’ this year but we can be mindful next year to reduce this potential source of crop injury as much as possible.
The new North Dakota Corn Nitrogen Calculator was posted on my web site in late April. Now, the companion Corn Fertility circular is available on my web site and on the NDSU Extension web pages.
Stripe rust of wheat was observed in Renville County, ND in winter wheat on July 15, 2014
We have received many questions about dying soybeans. The cause is, at least in part, severe root rot in much of the state.
Winter wheat is approaching maturity and early planted barley is not far behind and therefore, harvest will soon be upon us. Glyphosate can be used as a pre-harvest aid in small grains to control green weeds and to speed up uniform ripening of the crop.
Tile drainage does not remove “plant available” water from the soil; it merely removes “gravitational” water that would drain naturally, if unimpeded by confining layers in the soil.
Continue to scout for wheat midge from heading through early flowering (<50% flowered), especially in areas where the 2013 fall soil survey indicated moderate to high risk for wheat midge larvae (see map on right).
Grasshopper nymphs are increasing in some areas (see maps below) and may start moving into field edges of crops.
IPM scouts trapped banded sunflower moth at one location near Carrington REC in Foster County, so emergence is beginning.
The IPM Crop Scouts have surveyed over 80 soybean fields last week and no soybean aphids were observed in North Dakota.
This peculiar looking larva is called the Argus tortoise beetle (Chelymorpha cassidea (Fabricius)).
Information from the South-Central region of North Dakota.
Driving through the countryside in Eastern North Dakota and Minnesota has provided the opportunity to see many areas that have received excessive amounts of precipitation.
Correct weed identification is the first step in successful weed management. The following are resources you can use to ID weeds so you use the correct product or method at the correct time.
Several consultants have seen black medic increasing in no-till systems and also seen poor control from several herbicide systems in broadleaf crops.
Read about Late N application options in spring wheat/durum and corn.
The recent windy days and reduction in extended moisture events has reduced scab risk for a few areas in ND.