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Trends and Developments in Hog Manure Management: 1998-2009
关键词:
Hog production manure management structural change environmental regulation
年份:
2011
摘要:
ller areas. With less cropland for spreading the manure, hog farmers ma ...
Major Uses of Land in the United States, 2007
关键词:
agricultural land
年份:
2011
摘要:
); grassland pasture and rangeland at 614 million (27 percent); cropland...
Grassland to Cropland Conversion in the Northern Plains: The Role of Crop Insurance, Commodity, and Disaster Programs
关键词:
cropland
年份:
2011
摘要:
e grasslands being converted to cropland in the United States and espec ...
Commodity Payments, Farm Business Survival, and Farm Size Growth
关键词:
cropland
年份:
2007
摘要:
In the last 25 years, U.S. crop farms have steadily declined in number and grown ...
Major Uses of Land in the United States, 2002
关键词:
agricultural land
年份:
2006
摘要:
.8 percent); grassland pasture and range land, 587 million acres (25.9 percent); ...

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