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Full-Text Articles in Plant Sciences
Feed Grains Backgrounder, Linwood Hoffman, Allen Baker, Linda Foreman, C. Edwin Young
Feed Grains Backgrounder, Linwood Hoffman, Allen Baker, Linda Foreman, C. Edwin Young
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The U.S. feed grain sector, largest of the major U.S. field crops, faces unprecedented demand conditions. The size and speed of the expanding use of corn by the ethanol industry is raising widespread issues throughout the U.S. agricultural sector. Debate is ongoing over the use of grain for fuel instead of for food or feed and the adequacy of future grain supplies. Increased productivity (yield) and additional area from land planted to competing crops, land enrolled in conservation programs, or idled land is expected to provide an increased supply of feed grains. In 2003, U.S. feed grain farms had an …
Growth Analysis Based On Degree Days, M. P. Russelle, Wallace Wilhelm, R. A. Olson, James F. Power
Growth Analysis Based On Degree Days, M. P. Russelle, Wallace Wilhelm, R. A. Olson, James F. Power
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Comparisons of growth analysis functions within and among experiments are often confounded by sources of variation other than those imposed by treatment. we suggest use of a temperature index, such as modified growing degree days, as the divisor in growth functions to facilitate treatment comparisons within certain experiments and to reduce the effects of differing temperature regimes among experiments on these comparisons. Three experiments were identified to provide data to analyze this new approach. Mean absolute growth rate (GR) and mean relative growth rate (RGR) were compared in two experiments with maize (Zea mays L.) conducted in eastern Nebraska. …