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Life Sciences Commons

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Agronomy and Crop Sciences

South Dakota State University

Natural Resource Management Faculty Publications

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Publication Year

Articles 1 - 2 of 2

Full-Text Articles in Life Sciences

Breeding Alfalfa For Semiarid Regions In The Northern Great Plains: History And Additional Genetic Evaluations Of Novel Germplasm, Arvid A. Boe, Kevin D. Kephart, John D. Berdahl, Mike D. Peel, E. Charles Brummer, Lan Xu, Yajun Wu Oct 2020

Breeding Alfalfa For Semiarid Regions In The Northern Great Plains: History And Additional Genetic Evaluations Of Novel Germplasm, Arvid A. Boe, Kevin D. Kephart, John D. Berdahl, Mike D. Peel, E. Charles Brummer, Lan Xu, Yajun Wu

Natural Resource Management Faculty Publications

Yellow-flowered alfalfa (Medicago sativa subsp. falcata) (also known as sickle medic) has been the cornerstone for breeding alfalfa for dual grazing and hay production in the semiarid regions of the northern Great Plains in the US and Canada. Most, if not all, of the cultivars developed for the northern Great Plains during the 20th century, had parentage tracing back to introductions by Niels Ebbesen Hansen that were obtained from expeditions to Russia, primarily the province of Siberia, on behalf of the United States Department of Agriculture during the early 1900s. The M. falcata genome contains alleles for high levels of …


Early Weaning Reduces Rangeland Herbage Disappearance, Patricia Johnson, Kenneth C. Olson, Roger N. Gates, Hubert H. Patterson, Mindy Hubert, Douglas Landbloom, Janna J. Kincheloe, Heather A. Richter, Allison V. Grove Jul 2015

Early Weaning Reduces Rangeland Herbage Disappearance, Patricia Johnson, Kenneth C. Olson, Roger N. Gates, Hubert H. Patterson, Mindy Hubert, Douglas Landbloom, Janna J. Kincheloe, Heather A. Richter, Allison V. Grove

Natural Resource Management Faculty Publications

Early weaning of beef calves reduces nutrient and forage demand in a cow–calf enterprise, potentially contributing to reduction in forage utilization on the pasture from which calves are removed by a nonlactating cow vs. a cow–calf pair. Research was conducted to evaluate weaning beef calves 90 days early (EW) vs. normal weaning (NW) on pasture herbage disappearance in mixed-grass prairie pastures in the northern Great Plains. Spring-calving cows (n = 48) were utilized in each study year (2003, 2004, and 2006) from the date of early weaning (August) until the date of normal weaning (November). Cow–calf pairs were randomly …