Summer crops for green manure and soil improvement
- Source:
- Farmers' bulletin / United States Department of Agriculture ; no. 1750 1934
- Year:
- 1934
- Subject:
- Green manure crops, Soil fertility, green manures, cover crops, legumes, soil management, and nitrogen fixation
- Format:
- ii, 17 p. : ill. ; 23 cm.
- Language:
- English
- Publisher:
- U.S. Dept. of Agriculture
- Collection:
- Organic Roots Collection