Author
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Kindiger, Bryan |
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Submitted to: USDA, Agricultural Research Service, Cultivar Release
Publication Type: Other Publication Acceptance Date: 8/23/2017 Publication Date: N/A Citation: N/A Interpretive Summary: Oklahoma Creeping Wheatgrass (OCW) represents a plant germplasm release developed by Dr. Bryan K. Kindiger at the USDA-ARS, Grazinglands Research Laboratory, El Reno, OK 73036. OCW is a perennial, cool-season grass forage that is rhizomatous and exhibits excellent yield potential, persistence to low nitrogen inputs and high tolerance to heat and drought extremes of Oklahoma. The germplasm will have direct benefit to the heat and drought prone regions of the Southern Plains and S.E. USA. When OCW was compared to Jose on a dry matter basis, OCW exhibited a 2.76% higher level of crude protein (CP); a 2.7% higher level of total digestible nutrients (TDN); a 3.46% lower level of acid digestible fiber (ADF); a 3.53% lower level of neutral digestible fiber (NDF); however a superior relative feed value (RFV)of 123.93 vs 111.37. Technical Abstract: The Agricultural Research Service of the United States Department of Agriculture announces the release of a new hybrid wheatgrass Agropyron cristatum and A. intermedium. The Oklahoma Oklahoma Creeping Wheatgrass (OCW) represents a perennial, cool-season grass forage that is rhizomatous and exhibits excellent yield potential, persistence to low nitrogen inputs and high tolerance to heat and drought extremes of Oklahoma. The original hybrid material was produced by the USDA, ARS Plant Industry Station, Beltsville, MD, donated to the NPGS in 1982 (PI46913). Selections made within PI46913 for plant vigor, rhizomatous spread and persistence over a six year period at the USDA-ARS, Grazinglands Research Laboratory, El Reno, OK from 2000-2006. Seed was bulked from cross-pollination of the surviving selections. From 2006 to 2007, individual plant selections for high seed production were selected by Barenbrug Seeds, West Coast Research Station, Albany, OR USA and combined to generate an OCW experimental synthetic with the name “GRL-Syn”. 2004 forage quality estimates of OCW compared to the cultivar “Jose” tall wheatgrass which represents a persistent, perennial cool-season grass forage grown in the Southern Plains Region. Forage quality was performed by Dairyland Laboratories, Arcadia, WI. When OCW was compared to Jose on a dry matter basis, OCW exhibited a 2.76% higher level of crude protein (CP); a 2.7% higher level of total digestible nutrients (TDN); a 3.46% lower level of acid digestible fiber (ADF); a 3.53% lower level of neutral digestible fiber (NDF); however a superior relative feed value (RFV)of 123.93 vs 111.37. |
