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Articles 1 - 3 of 3
Full-Text Articles in Life Sciences
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
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 …
Evaluating Physiological Responses Of Ten Alfalfa (Medicago Sativa Subsp. Falcata) Germplasm To Drought Treatments, Austin Hanson
Evaluating Physiological Responses Of Ten Alfalfa (Medicago Sativa Subsp. Falcata) Germplasm To Drought Treatments, Austin Hanson
The Journal of Undergraduate Research
Alfalfa is the most widely produced perennial forage legume in North America. However, its use in the semiarid northern Great Plains is limited due to poor stand establishment and persistence under drought condition. The development of drought-tolerant alfalfa cultivars is of great need. Some Medicago sativa subsp. falcata populations have demonstrated promising drought resistance when compared to M. sativa. Morphological and physiological mechanisms play a critical role in drought tolerance by influencing seedling survival, stand establishment and drought recovery. Assessment of variability in physiological responses to drought among germplasm lines to drought is necessary for developing cultivars with improved drought …
Volunteer Glyphosate-Resistant Corn And Soybean Competition And Control, Jill Alms
Volunteer Glyphosate-Resistant Corn And Soybean Competition And Control, Jill Alms
Electronic Theses and Dissertations
The continuous use of glyphosate-resistant crops has resulted in volunteer crops with the same herbicide resistance as the cash crop and an increasing weed problem. Volunteer corn reduces soybean yields however; little research has examined corn yield loss due to volunteer corn or volunteer soybean competition. These studies investigated yield loss and control of volunteer soybean in corn, and volunteer corn in soybean and corn. Using several densities of competitive plants, the yield loss was fit to a hyperbolic equation that indicated incremental yield loss (I value) to be 29.9 for volunteer corn in soybeans, 5.6 for volunteer corn in …