Abstract:
:Phosphorus (P) runoff from manure can lead to eutrophication of surface water and algae growth. This study evaluates the impacts of alternative P reduction practices on dairy farm net returns and on potential P runoff. The P control practices include dairy herd nutrient management, crop nutrient management, and runoff and erosion control. Four farms representative of dairies in the Virginia Shenandoah Valley are simulated including dairies with and without supplementary broiler enterprises and with average and below average land area. A mathematical programming model was developed to predict farm production and net returns and the GLEAMS model was used to predict potential P runoff. The farms are evaluated under four scenarios: Scenario 1, no constraint on P runoff with access to crop nutrient, runoff and erosion control strategies but no access to dairy herd nutrient control strategies; Scenario 2, no constraint on P runoff with access to all crop and dairy herd nutrient control strategies; Scenario 3, constraint on P runoff with access to crop nutrient, runoff and erosion control strategies but no access to dairy herd nutrient control strategies; and Scenario 4, constraint on P runoff with access to all crop and dairy herd nutrient control strategies. Under Scenario 2, the herd nutrient control strategies increase milk output per cow and net returns on both farms and reduce P content of manure and P runoff. Under Scenario 3, limiting P runoff reduces farm returns by 1 and 3% on the average and small farms, respectively. Under Scenario 4, the P runoff constraint is less costly, reducing returns by less than 1% on both farms. Animal nutrient control strategies should be an important part of pollution control policies and programs for livestock intensive watersheds.
journal_name
J Environ Qualjournal_title
Journal of environmental qualityauthors
Bosch DJ,Wolfe ML,Knowlton KFdoi
10.2134/jeq2005.0329subject
Has Abstractpub_date
2006-04-26 00:00:00pages
918-27issue
3eissn
0047-2425issn
1537-2537pii
35/3/918journal_volume
35pub_type
杂志文章abstract::Farmed landscapes are engineered for productivity, and research suggests they contribute a disproportionate share of inorganic C to the Mississippi River and Gulf of Mexico. Here we use alkalinity and total organic C (TOC) measurements collected from the Raccoon River of Iowa to (i) evaluate inorganic and organic C co...
journal_title:Journal of environmental quality
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pub_type: 杂志文章,评审
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journal_title:Journal of environmental quality
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journal_title:Journal of environmental quality
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journal_title:Journal of environmental quality
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.7200
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abstract::Copper sulfate (CuSO4) is applied periodically to commercial channel catfish (Ictalurus panctatus) ponds as an algicide or parasiticide. Current understanding of the chemistry of copper in soil-water systems suggests that copper may accumulate in pond sediments, although the forms and potential bioavailability of copp...
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pub_type: 杂志文章
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更新日期:2001-05-01 00:00:00
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pub_type: 杂志文章
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更新日期:2005-04-20 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2002.1630
更新日期:2002-09-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2009.0057
更新日期:2009-10-29 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章,评审
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更新日期:2005-01-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2007.0071
更新日期:2007-10-24 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2011.0151
更新日期:2011-09-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2010.0494
更新日期:2011-07-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2003.5620
更新日期:2003-03-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2001.2105
更新日期:2001-11-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0459
更新日期:2005-07-05 00:00:00
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journal_title:Journal of environmental quality
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2004-05-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2004.0299
更新日期:2005-04-20 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
doi:10.2134/jeq2013.05.0190
更新日期:2014-01-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2004-11-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2017-05-01 00:00:00
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journal_title:Journal of environmental quality
pub_type: 杂志文章
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更新日期:2004-11-01 00:00:00
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更新日期:2017-05-01 00:00:00
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更新日期:2012-03-01 00:00:00