Forage Value of Grain Sorghum Stover – 2015

2015 Dryland Grain Sorghum Variety Trial

OSU Southwest Research and Extension Center

Gary Strickland, Jackson County CED, Jackson and Greer Counties Agriculture Educator and SWREC Dry-land Cropping Systems Specialist

*(dry matter)

Planting Date:  6-6-15

Fertility:  pH: 7.8        N: 155 Lbs./A residual nitrate         P: Sufficient (60 Soil Test Index)         K: Sufficient (704 Soil Test Index)

Herbicide: Dual Magnum  1 Pt./A  (Applied on 6-6-15)

Planting Rate: 3.5 Seed/Ft.

Seed selections were made with seed companies as local area selections.  Seed companies included Dekalb, Sorghum Partners, Pioneer, and Dynagrow.  Special appreciation is expressed to the following seed distributors: Crop Production Services, Helena Seed Company, and Null Seed Farms

Seed Characteristics: Early, Medium, and Late grain maturity (GM) ratings and seed color

Grain harvest was abandoned due to failure of varieties to head.  An alternative use of the crop was measured as forage or hay utilization for cattle.  Both yield and nutritional data were collected.  (CP=Crude Protein; ADF=Acid Detergent Fiber; TDN=Total Digestable Nutrients).  Nitrate accumulation at time of harvest was also measured (NO3=Nitrate in ppm)

Study Directors:  Gary Strickland and Dr. Randy Boman

 

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