ISSUE 3 May 24, 2007
During the past week (May 16-22), the region received rain ranging from 0.3 inches at LaMoure, Lisbon and Oakes to 1.6 inches at Streeter and Wishek, based on NDAWN (North Dakota Agricultural Weather Network). The May 22 rain was especially welcome west of Hwy 281. Hail occurred in Sheridan County on May 21. Light frost that occurred on May 16 lightly damaged some alfalfa, canola and cereal crops.
Winter wheat is actively growing and ranges from the jointing to boot stages of growth. Tan spot is present in the CREC’s winter wheat variety trial and likely is commonly present in the region’s winter wheat. Small grain is in the 2- to 5-leaf stage. Corn planting is essentially complete and the majority of the crop has emerged. Counties along Hwy 1 that received heavy rains earlier in May had some fields with crusted soils that challenged the emergence of corn and wheat. Progress with soybean planting varies across the region, probably averaging 60-75 percent, with some farms completed and others just starting. When soil and weather conditions are favorable, farm activities will include completing soybean planting, continuing sunflower and dry bean planting, continuing POST herbicide application in small grain, and alfalfa harvest.
Wheat response to early-season foliar fungicides
The Carrington Research Extension Center has been conducting HRS and durum wheat fungicide trials that include early-season foliar fungicide treatments. In the trials, numerous fungicides were applied at half heading-stage rates to tillering wheat on ground with small grain residue. The 13 site-year average of trials conducted in 2003-2006 indicate a yield increase of 3 bushels/acre or about 6 percent with fungicides compared to untreated checks.
Soybean ground rolling
The recent rainy weather may delay ground rolling of soybean fields until after the crop has emerged. A common question is ‘What is the best time to roll fields with emerged soybean to minimize plant injury, stand reduction or yield loss?’
Soybean ground rolling trials were conducted during three years at the Carrington Research Extension Center. Timing of the rolling ranged from immediately after soybean planting to soybean about 12 inches tall. Seed yield and plant density did not differ among the roll timings, although there was a trend for reduced stand with delay in rolling. Plant injury was low with early roll timings but significantly increased at and beyond the first trifoliate stage of growth. In summary, the data indicates that fully-emerged soybean should be rolled before the trifoliate stage to minimize plant injury. Remember to roll fields with dry plant foliage and soil surface, and during afternoons with sunshine and warm temperatures.
Area Extension Specialist/Cropping Systems
NDSU Carrington Research Extension Center
The area received from .5 inch to 4-5 inches of rainfall Monday and Tuesday. Greatest rainfall was received in western Benson, Rolette, Towner and Pierce counties. Least amount in Grand Forks county. Some crop was lost in areas where water ponded and some soil crusting can be expected. Small grain, corn, peas, and canola plantings are complete in the region. Earliest planted corn is near the three leaf stage with most corn emerged. Soybean, sunflower and dry beans are still being planted.
Winter wheat is in second joint and is in excellent condition. Many growers have been applying herbicides in winter wheat. Winter wheat flag leaf emergence will be around the first of June. Earliest plantings of wheat and barley are in the four to five leaf stage with most having at least emerged. Leaf disease levels have been low to date but would expect tan spot to increase following the moisture earlier this week. Canola is emerging to 3 leaf stage. No significant emergence of flea beetle has been reported. Wild oat and broadleaf weeds are emerging and growers will be starting post emergence weed control as soon as the soil dries.
Devils Lake Area Extension Specialist