ISSUE 7 June 15, 2006
Very little rainfall was received this past week. Moisture stress is evident on earliest plant small grain slightly to the west of highway 1 with the driest areas centering along highway 32. Wheat in that area is beginning to head. Rainfall this week will be important to maintain economic yield levels in dry areas. Crop growth is rapid with most crops developing ahead of a normal pace. Weed spraying is common. Leaf disease levels are low and insect problems are not occurring. Haying is common. Poor crop growth in saline areas is becoming very evident as warmer than normal temperatures push the crop. Some reseeding of canola and flax was required in areas of crusting and dry seedbeds.
Area Extension Specialist
Devils Lake Area Office
During the past week (June 7-13), rainfall recorded at NDAWN sites located in the region ranged from 0.2 (Linton) to 1.45 (Carrington) inches. Additional rainfall generally is west of Hwy 3. Based on NDAWN estimates, the regionís average daily water use on June 13 was about 0.2 inch for wheat, corn, soybean and sunflower. Hail was received in a localized area eastward from Valley City.
Winter wheat is flowering. April-planted barley and spring wheat are in the flag leaf to heading stages. The small grain crop is short in height, due to warm temperatures and moisture stress (especially in western counties). Row crops generally are in good condition. Corn is in the 4- to 6-leaf stages and soybean in the first- to second-trifoliate stages. Tan spot can be commonly found in wheat but incidence and severity continues to be low. Based on IPM scout reports and client calls, minimal disease and insect problems currently exist in the regionís crops. The hay crop and pastures generally are fair to poor.
HRS wheat response to fungicide application at early-flowering stage
NDSU currently has a limited research database containing yield response of selected HRS wheat varieties to fungicide application at the early-flowering stage. The database is from NDSU 2001-05 small-plot trials where recommended fungicide application procedures were used for scab suppression as well as control of leafspot disease. Averaged across site-years, Reeder, Ingot, Oklee, Oxen and Russ responded to fungicide application with 20-30% yield increase; Dapps, Norpro, Parshall Steele-ND, Ember, Glenn, Mercury, Briggs, Freyr and Polaris yield increased an averaged of 11 to 18%; and Alsen, Saturn, Granger, Gunner and Knudson yield averaged 4 to 8% compared to untreated checks. Details of the database may be obtained from the NDSU Extension Service. Variety response to fungicides will be variable due to the environment, disease type and severity, fungicide application techniques and other factors.
Area Extension Specialist/Cropping Systems
NDSU Carrington Research Extension Center
Rainfall has been highly variable in the region this season. This past week was no exception. Rainfall totals at the NDAWN locations have ranged from 0.11 inches at Mandan to 1.61 inches at Hettinger. Some producers in some of the drier areas of this region of the state have indicated that they havenít had a decent rain, that is 0.25 inches or more for over six weeks. Driest areas in this part of the state are from Beulah to Richardton to the eastern townships of Hettinger county and then east to the Missouri River and then an area around Beach. Wind conditions were suitable for herbicide/fungicide applications only one or two days this past week.
Crop conditions are still considered good except perennial hay in the driest portions of the region. Winter wheat is flowering, barley seeded prior to April 17 has headed with most of the spring wheat and barley seeded later only in the 4- to 6-leaf stage. Early seeded spring wheat in the driest areas is beginning to head out at about 8 inches tall. Of the 34 fields scouted in the western part of southwestern ND last week, 29 had infection rates of more than 10%. Aphids were found in wheat fields in Slope and Bowman Counties. Peas are flowering while safflower is still in the rosette stage. Sunflower planting in the far southwest corner was delayed due to rain earlier this season but was finally wrapped up this past week. Alfalfa is showing 50% bloom. Little hay has been cut to date but hay should be cut soon particularly in drought stressed areas. Leaf drop is occurring so producers are losing both yield and quality.
Area Extension Specialist/Cropping Systems
Dickinson Research Extension Center