Results 41 to 50 of about 8,979,122 (194)

A REGIONAL MODELING STRUCTURE FOR ASSESSING MANURE MANAGEMENT POLICIES: APPLICATION TO THE CHESAPEAKE BAY WATERSHED [PDF]

A modeling framework addresses manure management policies within the Chesapeake Bay watershed. Policy focus is on manure-land application at agronomic rates, as proposed under the EPA/USDA Unified Strategy.
Ribaudo, Marc, Aillery, Marcel P., Gollehon, Noel R., Breneman, Vincent E.   +3 more
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Mitigation and current management attempts to limit pathogen survival and movement within farmed grassland. [PDF]

, 2007
To successfully curb microbial contamination of surface waters we need to understand, and holistically evaluate, the range of mitigation strategies that have been designed to protect watercourses from non-point agricultural sources, so as to use them to ...
Oliver, D. M., Heathwaite, A. L., David R. Chadwick, David M. Oliver, Chadwick, D. R., Chris J. Hodgson, A. Louise Heathwaite, Hodgson, C. J., Hodgson, Chris, Chadwick, Dave, Chadwick, David R., Hodgson, Chris J., Oliver, David M.   +12 more
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Short communication: Impact of the intensity of milk production on ammonia and greenhouse gas emissions in Portuguese cattle farms

Spanish Journal of Agricultural Research, 2015
The aim of this study was evaluate the relationship between the intensity of milk production for a wide range of Portuguese commercial cattle farms and NH3 and greenhouse gas (GHG) emissions from manure management and enteric fermentation.
José Pereira, Henrique Trindade
doaj   +1 more source

CONSEQUENCES OF FEDERAL MANURE MANAGEMENT PROPOSALS: COST TO SWINE OPERATIONS FROM LAND APPLYING MANURE [PDF]

A manure application cost model was used with survey data to examine the costs to confined swine operations of meeting proposed mandatory nutrient management plans across regions and size classes.
Ribaudo, Marc, Agapoff, Jean, Aillery, Marcel P., Gollehon, Noel R.   +3 more
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Changes in Manure Management in the Hog Sector [PDF]

In recent years, structural changes in the hog sector, including increasing farm size and regional shifts in production, have altered manure management practices. Over the same period, changes to the Clean Water Act, new state regulations, and increasing
Ribaudo, Marc, Key, Nigel D., McBride, William D.   +2 more
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Economies of scale in the production of swine manure Economias de escala na produção de dejetos de suínos

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2000
Manure production on grower/finisher swine operations in the United States was examined using data from 184 grower/finisher swine operations that participated in the United States National Animal Health Monitoring System's 1995 National Swine Study.
W.C. Losinger, R.K. Sampath
doaj   +1 more source

Sustainable manure management in the Baltic Sea Region - results, cases and project recommendations:Baltic Manure Report. www.balticmanure.eu

, 2014
This magazine contains the major results, conclusions andrecommendations of the project Baltic Forum for InnovativeTechnologies for Sustainable Manure Management (Baltic Manure)which via co-funding from Interreg Baltic Sea Region programmehas been a ...
Luostarinen, S, Hamelin, Lorie, Rodhe, L, Tybirk, Knud, Jensen, A.L.S., Haneklaus, S, Poulsen, Hanne Damgaard   +6 more
core   +1 more source

Transdisciplinary model-based systems engineering in the development of the Ruminant Farm Systems model

Frontiers in Sustainability
This study adopts a transdisciplinary model-based systems engineering (MBSE) approach to support the development of the Ruminant Farm Systems (RuFaS) model, an advanced on-farm decision support tool.
Haowen Hu, Clifford A. Whitcomb, Thomas E. Ploetz, Kristan F. Reed, Kristan F. Reed   +4 more
doaj   +1 more source

Biohydrogen Production from Agricultural and Livestock By-Products by Dark Fermentation: A Data Mining Approach

Agriculture
Hydrogen is being increasingly recognized as a promising clean, renewable energy carrier. Among the available production pathways, biological processes, particularly dark fermentation of residual biomasses and agricultural by-products, represent an ...
Federico Illuminati, Rossana Savio, Andrea Pezzuolo, Giovanni Ferrari, Francesco Marinello, Mariangela Guidolin, Maria Cristina Lavagnolo   +6 more
doaj   +1 more source

Coupling Dairy Manure Storage with Injection to Improve Nitrogen Management: Whole-Farm Simulation Using the Integrated Farm System Model

Agricultural & Environmental Letters, 2017
Application of livestock manure to farm soils represents a priority nutrient management concern in the Chesapeake Bay watershed. Historically, strong emphasis has been placed on adding manure storage to dairy operations, with the recognition that manure ...
E. W. Duncan, P. J. A. Kleinman, D. B. Beegle, C. A. Rotz   +3 more
doaj   +1 more source