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Full-Text Articles in Life Sciences
An Economic Analysis Of High-Intensity, Short-Duration Grazing Systems In South Dakota And Nebraska, Larry Janssen, Bronc Mcmurtry, Matthew Stockton, Alexander Smart, Sharon A. Clay
An Economic Analysis Of High-Intensity, Short-Duration Grazing Systems In South Dakota And Nebraska, Larry Janssen, Bronc Mcmurtry, Matthew Stockton, Alexander Smart, Sharon A. Clay
Agronomy, Horticulture and Plant Science Faculty Publications
Four different grazing systems: two rotational systems, a continuous grazing system, and a modified high-intensity, short-duration (mob) system were evaluated from an economic return and risk perspective. Stocking rates and average daily gains (ADG) were obtained from 2011 – 2014 from university ranch experiments in northern Nebraska. Simulation models were used to examine net returns and risk in each system and rank systems according to risk preferences. A twice through rotational grazing system was most profitable. Mob grazing was the least preferred, although when risk aversion increased, it rose in preference. Mob grazing could be profitable if adjustments increased animal …
Insect Communities In Soybeans Of Eastern South Dakota: The Effects Of Vegetation Management And Pesticides On Soybean Aphids, Bean Leaf Beetles, And Their Natural Enemies, Jonathan G. Lundgren, Louis S. Hesler, Sharon A. Clay, Scott F. Fausti
Insect Communities In Soybeans Of Eastern South Dakota: The Effects Of Vegetation Management And Pesticides On Soybean Aphids, Bean Leaf Beetles, And Their Natural Enemies, Jonathan G. Lundgren, Louis S. Hesler, Sharon A. Clay, Scott F. Fausti
Agronomy, Horticulture and Plant Science Faculty Publications
Although most pests of soybeans, Gycine max (L.), in the Northern Great Plains are managed using pesticides, farm management practices that encourage biodiversity offer promising long-term, sustainable solutions for controlling insect and weed pests profitably. The recent invasion of the Northern Great Plains by the soybean aphid (Aphis glycinesMatsumura; Hemiptera: Aphididae) has had potentially important implications for insect communities in soybeans of this region, although recent descriptions of this regional community are scarce. We describe how three pest management systems that vary in the intensity with which they rely on herbicides and insecticides (chemically intensive, reduced chemical, and …