Growth Response Of Mixed Native Grass Stands To Simulated Grazing In Mississippi PDF Download
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Author | : Vitalis Wilbald Temu |
Publisher | : |
Total Pages | : |
Release | : 2011 |
Genre | : Forage plants |
ISBN | : |
Download Growth Response of Mixed Native Grass Stands to Simulated Grazing in Mississippi Book in PDF, ePub and Kindle
Some native warm-season forage grasses [indiangrass (IG, Sorghastrum nutans), big bluestem (BB, Andropogon gerardii) and little bluestem (LB, Schizachyrium scoparium)] are gaining popularity for improving summer forage production and wildlife habitat in the southeastern USA. Paucity of information about appropriate harvest management limits their restoration success. An experiment was conducted to assess effects of harvest intervals (30-, 40-, 60-, 90 or 120-d) and harvest duration on forage yield and quality, plant growth, sward structure and botanical composition of their mixed stands at Bryan Farms, Clay County, MS. Total season forage was greatest for 30-d and more from first (8472 kg ha−1) than second year plots (7627 kg ha−1). Yield was reduced by up to 43% in the second harvest year. Forage quality (crude protein content and in vitro digestibility) decreased with lengthening of harvest interval and across the harvest season. Tiller weight increased while specific leaf area and relative growth rate decreased with lengthening of harvest interval in first and second year plots. Harvesting reduced sward heights the following May, but treatment did not affect sward heights. Season mean sward heights were shorter for short harvest intervals. Light interception was greatest in the control and decreased with shortening of harvest intervals. Continuous harvesting controlled Solidago canadensis, increased herbaceous forbs, and LB, but decreased IG without substantial effect on BB. Rotational harvesting at 30- or 40-d intervals may improve forage production without compromising breeding cover during recovery. Studies on other management practices including fertilizer application and timing of harvest are needed.
Author | : |
Publisher | : |
Total Pages | : 654 |
Release | : 2008 |
Genre | : Soil science |
ISBN | : |
Download Canadian Journal of Soil Science Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 822 |
Release | : 1995 |
Genre | : Agriculture |
ISBN | : |
Download Agrindex Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 1732 |
Release | : 1976 |
Genre | : Agriculture |
ISBN | : |
Download Bibliography of Agriculture Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 764 |
Release | : 1978 |
Genre | : Grasslands |
ISBN | : |
Download Proceedings of the International Rangeland Congress Book in PDF, ePub and Kindle
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 416 |
Release | : 2012-01-29 |
Genre | : Technology & Engineering |
ISBN | : 0309187516 |
Download Renewable Fuel Standard Book in PDF, ePub and Kindle
In the United States, we have come to depend on plentiful and inexpensive energy to support our economy and lifestyles. In recent years, many questions have been raised regarding the sustainability of our current pattern of high consumption of nonrenewable energy and its environmental consequences. Further, because the United States imports about 55 percent of the nation's consumption of crude oil, there are additional concerns about the security of supply. Hence, efforts are being made to find alternatives to our current pathway, including greater energy efficiency and use of energy sources that could lower greenhouse gas (GHG) emissions such as nuclear and renewable sources, including solar, wind, geothermal, and biofuels. The United States has a long history with biofuels and the nation is on a course charted to achieve a substantial increase in biofuels. Renewable Fuel Standard evaluates the economic and environmental consequences of increasing biofuels production as a result of Renewable Fuels Standard, as amended by EISA (RFS2). The report describes biofuels produced in 2010 and those projected to be produced and consumed by 2022, reviews model projections and other estimates of the relative impact on the prices of land, and discusses the potential environmental harm and benefits of biofuels production and the barriers to achieving the RFS2 consumption mandate. Policy makers, investors, leaders in the transportation sector, and others with concerns for the environment, economy, and energy security can rely on the recommendations provided in this report.
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Total Pages | : 1080 |
Release | : 1984 |
Genre | : Dissertations, Academic |
ISBN | : |
Download Comprehensive Dissertation Index: Agriculture Book in PDF, ePub and Kindle
Author | : Dennis H. Knight |
Publisher | : Yale University Press |
Total Pages | : 356 |
Release | : 1996-08-01 |
Genre | : Science |
ISBN | : 9780300068566 |
Download Mountains and Plains Book in PDF, ePub and Kindle
Studies the rich diversity of plant and animal life of the Great Plains, the Rocky Mountains, and the intermountain basins in Wyoming and adjacent states. The author surveys the geologic history of such diverse environments as Yellowstone, Grand Teton National Park and the Black Hills.
Author | : David Eldridge |
Publisher | : |
Total Pages | : 582 |
Release | : 1999 |
Genre | : Range management |
ISBN | : |
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Author | : Allan Dobb |
Publisher | : |
Total Pages | : |
Release | : 2013 |
Genre | : Range management |
ISBN | : 9780772666437 |
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