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Effect of ploughing-in winter catch crops and of farmyard manure in the rotation link

, : Effect of ploughing-in winter catch crops and of farmyard manure in the rotation link. Roczniki Nauk Rolniczych, A 99(3): 169-187

In field trials in 1966-9 potatoes were planted after incorporation of 0 or 20 t f.y.m./ha to the soil or after ploughing-in a catch crop of Vicia villosa + winter rye or of V. villosa + winter rape (Brassica napus var. oleifera subvar. biennis), with or without 10 t f.y.m./ha. The highest mean yields of potatoes were 26.2 and 26.5 tubers/ha obtained with V. villosa + winter rape + f.y.m. and V. villosa + rye + f.y.m. respectively.


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