The role of green manures in potato production
| Autor: | J. M. Blume, E. R. Purvis |
|---|---|
| Rok vydání: | 1939 |
| Předmět: |
chemistry.chemical_classification
biology business.industry fungi food and beverages Soil classification Plant Science engineering.material Sorghum biology.organism_classification Manure Green manure Nutrient Agronomy chemistry Agriculture engineering Environmental science Organic matter Fertilizer business Agronomy and Crop Science |
| Zdroj: | American Potato Journal. 16:32-36 |
| ISSN: | 1874-9380 0003-0589 |
| DOI: | 10.1007/bf02861793 |
| Popis: | Data are presented showing the beneficial effect of green manure crops of soybeans and sorghum upon the yield of potatoes on two soil types. Fresh organic matter was found to be approximately three times as effective in increasing yield as was residual organic matter. It is shown that green manure crops add plant nutrients to the soil in amounts approximately equivalent to 2,000 pounds on each acre of a 7-2-5 fertilizer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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