ISSUE 13   August 13, 2009

South-Central ND

During August 1-11, rainfall at NDAWN sites in the region ranged from <0.1 inch at Dazey and Pillsbury, to 2.0 inches at Oakes. During the period of April 1 to August 9, weather station sites with significant rainfall deficiency compared to the long-term average include Streeter (-3.8), Edgeley (-3.9), Carrington (-4.2), Jamestown (-6.4), and Dazey (-8.2). Corn growing degree day (GDD) units for the period May 1 to August 11 range from 1200 to 1450 units, which continue to be behind 100 to 165 units this season compared to last year (the story is worse if we compare 5-year or long-term averages).

Winter wheat and barley harvest is in progress and spring wheat harvest should start the week of August 17. Early-planted soybean are in full-pod (R4) stage of growth and about 40 days are needed to reach initial maturity (R7). Early-planted sunflower have begun flowering (R5 stage) and will require about 45 days to reach maturity (R9). Soybean growers need to continue monitoring the crop for soybean aphids and spider mites. Sunflower midge incidence and feeding injury is high in some fields in the Carrington area – growers should be surveying their fields while checking for other head-infesting insects.

Greg Endres
Area Extension Specialist/Cropping Systems
NDSU Carrington Research Extension Center
gregory.endres@ndsu.edu

 

Southwest ND

Rainfall totals reported by NDAWN over the past two weeks included Beach 2.1, Bowman 1.45, Dickinson 0.77, Dunn Center 0.41, Hazen 0.62, Hettinger 3.11, Mandan 0.48, and Mott 1.56 inches of rain. Temperatures have been cooler than normal, with accumulated growing degree days for corn behind by 228 units. The majority of corn in this area has tasseled. Winter wheat harvest is occurring in the southern and western portions of the state and expected to begin in the Dickinson area by the end of this week. Spring wheat seeded on May 8 is in the hard dough stage, Canola is beginning to turn. Field pea harvest will begin shortly.

The Dickinson Research Extension Center harvested winter camelina on August 11. Camelina is a relatively new crop in western North Dakota, with early work on the crop having occurred on spring types at Hettinger, Williston, and Sidney, MT. Camelina is an oil seed crop that can be used to produce biodiesel. Prior to seeding, a glyphosate application was made to control winter annuals. No additional herbicide was applied. Two seeding rates of a single variety of winter camelina were sown on September 26, 2008, using a double disc no-till opener drill into pea stubble. The crop emerged shortly after receiving precipitation (see photo). Since May 1 until harvest, precipitation at Dickinson was 5.71 inches or about 98% of normal. The crop was straight cut (see photo). Markets for this crop are currently limited but one company is currently contracting for this crop in the area. Results from this year’s winter camelina can be seen in the table below.

Seeding Rate

Seed yieldz

Seed test weightz

lb/acre

lb/acre

lb/bu

3

2027 a

51.3 a

6

1890 b

51.9 a

Mean

1958.5

51.6

z Means in columns followed by the same letter(s) are not significantly different (P 0.05).


Winter camelina on October 24, 2008.


Mature winter camelina, August 7, 2009.

Roger Ashley
Area Extension Specialist
Dickinson REC
roger.ashley@ndsu.edu  


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