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The influence of fertilizing and crop rotation on the manganese content of soils.


, : The influence of fertilizing and crop rotation on the manganese content of soils.. Ann. Univ. Mariae Curie-Skiodowska, 6E: 1-37

Results are discussed of a long-term study on the effects of various rotations and NPK treatments on the Mn content of a humi-ferous (pH 6.5-7.3) and a podzolized (pH 5.6-6.3) soil. A 5-year rotation including clover proved more effective than a 3-year rotation in maintaining the Mn level in unfertilized plots. Lack of N and P decreased the total-Mn, and liming the exchangeable-Mn contents of the soils.

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