ISSUE 6 June 14, 2007
The area received from 1 inch to 3 inches of rainfall in the last ten days. Soil moisture is adequate to surplus. Many areas have significant loss of crop due to flooding of lowland areas in fields.
Winter wheat is in late boot to flowering and is in excellent condition. Leaf rust and other leaf diseases are increasing and growers are considering fungicide applications. Earliest spring wheat and barley is in 6-7 leaf stage and generally looking good as are all cool season crops. Tan spot is common and Septoria leaf disease is increasing. Growers are getting weed control accomplished despite saturated soils. Canola is in various growth stages from just emerging to bolting. Flea beetles numbers increased dramatically the last two weeks and some post emergence insecticides have been applied. Generally stands are good although heavy rains compacted soil and poor emergence has resulted in some marginal stands. Dry beans, sunflower and soybeans are emerging. There are many reports of poor emergence of dry beans due to crusting. Soybeans have been slow to emerge but generally emergence has been good. Corn is responding well to warmer weather. Earliest plantings are 5-6 leaves. Frost occurred again last Thursday in northern counties. Crop planting continues throughout the area as growers struggle to complete seeding on available acres.
Area Extension Specialist
Devils Lake Area Office
During the past week (June 6-12), the region received rain ranging from 0.2 inch at Oakes to 3.5 inches at Harvey, based on NDAWN (North Dakota Agricultural Weather Network). Soil moisture is adequate to excess. Crop planting/replanting should be essentially completed by June 15. Small grain generally has excellent yield potential. Winter wheat is in the heading to flowering stages, and spring wheat and barley range from jointing to the boot stages. Corn is in the 4- to 6-leaf stage and growth rate is accelerating with warm temperatures and adequate soil moisture. Corn growing degree days are near or slightly greater than normal in the region. Establishment of some soybean, dry bean and sunflower fields is being challenged due to crusted soils. Progress is being made on POST herbicide application in cool-season crops and corn but challenges continue due to rain, wind and wet fields. Wheat disease includes tan spot, bacterial blight and leaf rust. Fungicides are being applied to winter wheat for leafspot disease control and scab suppression. Check NDSU’s small grain disease forecasting website (www.ag.ndsu.nodak.edu/cropdisease/cropdisease.htm) to assist with decisions on application of fungicides. Small grain aphids are currently being found at low levels by our IPM crop scout. Pastures and hayland are in excellent shape, but extended sunshine is needed for successful hay harvest.
Openings still available for Crop Management Field School on June 21 at Carrington
A crop management field school will be offered Thursday, June 21, from 9 a.m. to 4:30 p.m. at the North Dakota State University Carrington Research Extension Center. The school will provide hands-on training on crop, pest and soil management using field research and demonstration plots.
Sessions include weed id, herbicide mode-of-action, wheat disease management, insect mgmt, corn, and soil.
For further details and preregistration information, contact the Carrington center at (701) 652-2951 or go to www.ag.ndsu.nodak.edu/carringt/. A completed preregistration form and $50 fee is requested by June 18 ($75 after June 18). Continuing education units for CCA’s include 4.5 integrated pest management, 1 soil and water and 0.5 nutrient management.
Area Extension Specialist/Cropping Systems
NDSU Carrington Research Extension Center
NDAWN rainfall totals for the week ranged from 1.12 inches at Hazen to 4.55 inches at Mandan. Producers have reported rainfall totals from one precipitation event of over 5.5 inches received west of Bowman. Depending on location most areas only had a couple of days suitable for application of herbicide and fungicides and a few producers in a limited number of areas were able to complete seeding of sunflower before the next rainstorm.
Winter wheat is heading to flowering while earliest seeded spring wheat is beginning to display the flag leaf. Tan spot and septoria leaf diseases continue to be reported as prevalent. Producers are beginning to report that they are seeing leaf rust in winter wheat and many are making a late season application of a fungicide.
Canola is bolting to flowering while many pea fields are in the 12 to 14 node stage of development. Earliest seeded pea fields have advanced to flowering. Corn has recovered from the cold conditions experienced the previous two weeks. Sunflowers that have been in the ground for a couple of weeks are beginning to emerge.
Alfalfa was in the bud to 1/10 bloom last Friday. Alfalfa fields in the Manning area that were examined did not show alfalfa weevil damage, but reports from Bowman and Golden Valley Counties indicate weevils at significant levels were found feeding. Some insecticide applications have been made to control alfalfa weevil. Producers should observe the preharvest interval listed on the specific insecticide used prior to swathing. A control measure that may eliminate the need to apply an insecticide to control alfalfa weevil is to harvest the crop now. Since the alfalfa has advanced as far as it has, cutting the crop now will expose the young larva to the sun thus killing the larva in most cases. Producers will still need to scout after the hay has been removed for surviving larva. If found in sufficient numbers an insecticide applied, but many times larva numbers are reduced to levels where an insecticide is not required.
Area Extension Specialist/Cropping Systems
Phone (701) 483-2348 ext 106