Full TGIF Record # 107611
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Web URL(s):http://www.sciencedirect.com/science/article/pii/S0167880999000845
    Last checked: 10/09/2015
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Publication Type:
i
Report
Author(s):Stout, W. L.; Fales, S. L.; Muller, L. D.; Schnabel, R. R.; Weaver, S. R.
Author Affiliation:Stout, Schnabel and Weaver: Pasture System and Watershed Management Research Laboratory, United States Department of Agricultural/Agriculture Research Service, University Park, Pennsylvania; Fales and Muller: Department of Agronomy and Department of Dairy and Animal Science, The Pennsylvania State University, University Park, Pennsylvania
Title:Water quality implications of nitrate leaching from intensively grazed pasture swards in the northeast US
Source:Agriculture, Ecosystems, and Environment. Vol. 77, No. 3, February 2000, p. 203-210.
# of Pages:8
Publishing Information:Amsterdam: Elsevier Science Publishers
Keywords:TIC Keywords: Medicago sativa; Grazing; Dactylis glomerata; Lolium; Water quality; Trifolium repens; Comparisons; Pastures; Leaching; Nitrate nitrogen
Abstract/Contents:"High density animal production systems, such as management intensive grazing (MIG), can have a negative effect on water quality. Learning to manage such systems to minimize water quality impacts is essential for the environmental and economic sustainability of these types of animal production systems. Management intensive grazing is a graving system in which animals at a high stocking density are rotated through several paddaocks at short time intervals (12-24 h) so that animal's performance is maximized. Although MIG has the potential to increase dairy farm profitability in the northeast US, recent work in this region has shown that a substantial amount of N applied as fertilizer is leached below the root zone of orchardgrass (Dactyls glomerata L.,(cv.) 'Pennlate') managed as an intensive pasture. How much N is leached from other forage species managed as intensive pasture under the climatic conditions of the northeast US is not known. A field study was conducted using large drainage to measure NO3-N leaching loss from six pasture swards: orchardgrass+ N, orchardgrass + alfalfa (Medicago sativa L., (cv.) Alfagraze), orchardgrass + Ladino type white clover (Trifolium repens L.), Ryegrass (Lolium perrene L, (cv.) Citadel) + N, ryegrass+ alfalfa, and ryegrass + white clover. The study site was located in central Pennsylvania on a Hagerstown silt loam soil (fine, mixed, mesic Tupic Hapludalf). Nitrate-N leaching losses were most consitent under N fertilized swards where the amount of N could be adjusted for yearly weather conditions. In a drought year, NO3-N leaching increased dramatically in swards containing alfalfa or white clover. Sward type and stocking density need to be taken into consideration when developing an animal production system that will be both environmentally and economically sustainable."
Language:English
References:23
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Stout, W. L., S. L. Fales, Schnabel Muller, Weaver R. R., and Fales S. R. 2000. Water quality implications of nitrate leaching from intensively grazed pasture swards in the northeast US. Agric. Ecosyst. Environ. 77(3):p. 203-210.
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Web URL(s):
http://www.sciencedirect.com/science/article/pii/S0167880999000845
    Last checked: 10/09/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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