Crop & Pest Report
Winged soybean aphids were observed moving to buckthorn (Rhamnus spp), a small woody shrub. Buckthorn is common in our shelterbelts and woods in North Dakota.
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 Southwest region of North Dakota.
The field tour is scheduled for Thursday, Sept. 5, at the NDSU Carrington Research Extension Center. The event begins at 4 p.m. and concludes with a sponsored supper. Participants will view field research trials and receive production recommendations on corn, dry beans and soybeans.
Information from the South-Central region of North Dakota.
Here are my recommendations for application of anhydrous ammonia and urea in North Dakota in the fall. No fall anhydrous ammonia or urea on sandy loam soils or coarser or soil that floods regularly in the spring. Do not apply any anhydrous ammonia or urea until the calendar hits October.
As in the past, soil testing for residual nitrate immediately following early crop harvest in August is perfectly acceptable.
The soil this August is behaving differently than during last year’s dry period. Last year, the soil on higher clay soils was very hard and worked up very cloddy.
If you are beginning to see areas in soybean fields where soybeans are shorter and beginning to turn yellow, it is important to start thinking about soybean cyst nematode (SCN).
Halo Blight and Common Bacterial Blight both are both being frequently reported throughout the growing region this year. In most years, Common Blight is common, but Halo Blight is relatively rare. Halo Blight caused its greatest damage to edible beans when temperatures are in the high 60’s to low 70’s. Common Bacterial Blight causes more damage when temperatures are in the 80’s.
The cause of the Irish potato famine, late blight (Phytophthora infestans) is rearing its ugly self again this year. Late blight is a serious disease, because it can devastate potato and tomato fields in a matter of days. Many potato growing states and provinces have identified late blight this year, however it has not been found in North Dakota.
Some of the common diseases that affect sugarbeet include Cercospora leaf spot, Fusarium, Rhizomania, and Rhizoctonia crown and root rot.
Winter wheat can be a viable crop in today’s cropping systems. It is usually planted and harvested during periods that do not compete with other farm activities, has high yield potential and can be an excellent option for land that was not planted this spring if properly managed.
The annual sunflower survey training will take place on Thursday September 5, 2013, starting at 12:30 and ending at 3:45 p.m. The event will be at the NDSU Carrington Research Extension Center, 663 Hwy 281 N, Carrington, ND.
WASHINGTON – In an ongoing effort to protect bees and other pollinators, the U.S. Environmental Protection Agency (EPA) has developed new pesticide labels that prohibit use of some neonicotinoid pesticide products where bees are present.
The new generation of adult flea beetles is emerging and feeding on developing pods of canola. This is the overwintering generation that will emerge next spring.
Sap beetles (or picnic beetles) have been observed feeding and damaging corn ears. One of the most common sap beetles is Glischrochilus quadrisignatus, which is ¼ inch long, black with four orange-red spots on the wing covers and has “knobbed” antennae. Adult sap beetles feed on decaying, ripening plant material.
This time of year, adult grasshoppers start to move around and feed on late-season row crops, such as sunflowers, corn, dry beans, soybeans or flax.
Continue scouting for soybean aphids and spider mites in soybeans.
Black blister beetles (Epicauta pensylvanica) were observed damaging blossoms and clipping stems of alfalfa regrowth (after cuttings) in McIntosh County. As long as the blister beetles are not feeding directly on the crowns and destroying >50% of crowns, the alfalfa should be able to compensate next spring for loss growth.