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The Harlem News
Harlem, Blaine County, Montana
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U.S. Department of Agriculture soil scientists explain that green manure's effectiveness on crop yield depends on soil temperature and moisture for decomposition, with optimal conditions allowing rapid breakdown in 7 days.
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Its effect on the quantity and quality of the succeeding crop is usually the farmer's measure of the desirability of green manuring, but failure to get an increase in crop yield can not always be blamed to the green manure, say soil scientists of the U. S. Department of Agriculture. The decomposition of green manure is influenced greatly by the temperature and moisture of the soil. Most soil bacteria need a temperature of 65 to 70 degrees, or even higher, for rapid activity. Lack of moisture may also retard decomposition. Experiments showed that under the best conditions succulent green manure was nearly all decomposed in 7 days; at temperatures below 65 degrees the rate was slower and more than 14 days were needed.
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Soil scientists of the U. S. Department of Agriculture state that failure to increase crop yield from green manuring cannot always be blamed on the green manure. Decomposition is influenced by soil temperature and moisture. Most soil bacteria need 65 to 70 degrees or higher for rapid activity. Lack of moisture retards decomposition. Experiments showed succulent green manure nearly all decomposed in 7 days under best conditions; below 65 degrees, more than 14 days needed.