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共检索到6条 ,权限内显示50条;
Trends and Developments in Hog Manure Management: 1998-2009
- 关键词：
- manure management
- 年份：
- 2011
- 摘要：
- ller areas. With less cropland for spreading the manure, hog farmers may be comp ...
Climate Change Policy and the Adoption of Methane Digesters on Livestock Operations
- 关键词：
- Methane methane digesters manure livestock climate change greenhouse gases carbon offset agricultural economics
- 年份：
- 2011
- 摘要：
- ause costs have exceeded benefits to operators. Burning methane in a digester re ...
Changes in Manure Management in the Hog Sector: 1998-2004
- 关键词：
- manure management
- 年份：
- 2009
- 摘要：
- on manure management technologies and practices, the use of nutrient m ...
Technical Documentation of the Regional Manure Management Model for the Chesapeake Bay Watershed
- 关键词：
- manure management
- 年份：
- 2005
- 摘要：
- As part of a broader ERS assessment of the costs of manure management, ...
Manure Management for Water Quality: Costs to Animal Feeding Operations of Applying Manure Nutrients to Land
- 关键词：
- manure management
- 年份：
- 2003
- 摘要：
- Nutrients from livestock and poultry manure are key sources of water pollution. ...
Economic and Structural Relationships in U.S. Hog Production
- 关键词：
- manure management
- 年份：
- 2003
- 摘要：
- blems. The increasing market control and power concentrated among packers and la ...
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