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共检索到26条 ,权限内显示50条;
Sugar and Sweeteners Outlook: August 2011
- 关键词：
- yield
- 年份：
- 2011
- 摘要：
- On August 1, 2011, the U.S. Department of Agriculture (USDA) announced the Fisca ...
Sugar and Sweeteners Outlook: October 2009
- 关键词：
- yield
- 年份：
- 2009
- 摘要：
- The Agricultural Adjustment Act of 1938, as amended by the Food, Conservation, a ...
Economic Returns to Public Agricultural Research
- 关键词：
- crop yield
- 年份：
- 2007
- 摘要：
- Over the last several decades, the U.S. agricultural sector has sustained impres ...
The First Decade of Genetically Engineered Crops in the United States
- 关键词：
- crop yields
- 年份：
- 2006
- 摘要：
- Ten years after the first generation of genetically engineered (GE) varieties be ...
The Seed Industry in U.S. Agriculture: An Exploration of Data and Information on Crop Seed Markets, Regulation, Industry Structure, and Research and Development
- 年份：
- 2004
- 摘要：
- Unprecedented growth in crop yields and agricultural total factor produ ...
Adoption of Agricultural Production Practices: Lessons Learned from the U.S. Department of Agriculture Area Studies Project
- 年份：
- 2001
- 摘要：
- management practices affects chemical use and crop yields.
