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Effects of direct drilling and ploughing on root distribution in spring barley, and on the concentrations of extractable phosphate and potassium in the upper horizons of a clay soil
Malcolm C. Drew, Leslie R. SakerVolume:
29
Year:
1978
Language:
english
Pages:
6
DOI:
10.1002/jsfa.2740290302
File:
PDF, 405 KB
english, 1978