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Influence of long-term mineral fertilization on winter wheat grain yield and on soil properties


, : Influence of long-term mineral fertilization on winter wheat grain yield and on soil properties. Tagungsbericht, Akademie der Landwirtschaftswissenschaften der Deutschen Demokratischen Re ik (162): 153-159

Experiments conducted in Romania since 1967 have aimed at elucidation of crop N and P requirements. The range of economically optimal P rates was greater than that of N rates.

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