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共检索到31条 ,权限内显示50条;
Manure Use for Fertilizer and for Energy: Report to Congress
- 关键词：
- Manure
- 年份：
- 2009
- 摘要：
- of fertilizer, and its other uses. About 5 percent of all U.S. croplan ...
Vegetables and Melons Outlook: September 2009
- 关键词：
- fertilizer
- 年份：
- 2008
- 摘要：
- and lowest in the Midwest. Labor accounted for 30 percent of U.S. cash expenses ...
Impact of Rising Natural Gas Prices on U.S. Ammonia Supply
- 关键词：
- fertilizer
- 年份：
- 2007
- 摘要：
- The volatile and upward trend in U.S. natural gas prices from 2000-06 has led to ...
Managing Manure to Improve Air and Water Quality
- 关键词：
- Animal waste nitrogen ammonia water quality air quality nutrient management plan manure management costs price and quantity adjustments CAFO
- 年份：
- 2005
- 摘要：
- Animal waste from confined animal feeding operations is a potential source of ai ...
Technical Documentation of the Regional Manure Management Model for the Chesapeake Bay Watershed
- 关键词：
- agricultural economics manure management livestock waste nutrients nitrogen phosphorus water quality CAFO AFO Chesapeake Bay
- 年份：
- 2005
- 摘要：
- As part of a broader ERS assessment of the costs of manure management, ...
Agricultural Resources and Environmental Indicators, 2003
- 关键词：
- fertilizer
- 年份：
- 2003
- 摘要：
- This report identifies trends in land, water, and biological resources and comme ...
Manure Management for Water Quality: Costs to Animal Feeding Operations of Applying Manure Nutrients to Land
- 关键词：
- Agricultural economics manure management livestock waste nutrients nitrogen phosphorus water quality CAFO AFO Chesapeake Bay
- 年份：
- 2003
- 摘要：
- Nutrients from livestock and poultry manure are key sources of water po ...
Economic and Structural Relationships in U.S. Hog Production
- 关键词：
- agricultural economics Hog production industry structure structural change production costs contract production manure management ARMS ERS USDA
- 年份：
- 2003
- 摘要：
- blems. The increasing market control and power concentrated among packers and la ...
Adoption of Agricultural Production Practices: Lessons Learned from the U.S. Department of Agriculture Area Studies Project
- 年份：
- 2001
- 摘要：
- nitrogen applications, green manure, biological pest controls, pest-re ...
Confined Animal Production and Manure Nutrients
- 关键词：
- Manure
- 年份：
- 2001
- 摘要：
- Census of agriculture data were used to estimate manure nutrient produc ...
