Experiments comparing the effects on yields of potatoes of three methods of applying three amounts of NPK fertilizer and the residual effects on following winter wheat

Widdowson, F. V., Penny, A. and Williams, Rodney (1967) Experiments comparing the effects on yields of potatoes of three methods of applying three amounts of NPK fertilizer and the residual effects on following winter wheat. The Journal of Agricultural Science, 69 (2). pp. 247-257. 10.1017/S0021859600018657
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RESP-5657
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