Estimation of crop rotations at increasing share of winter wheat
1984
Borenska, L. | Niewiadomski, W. (Akademia Rolniczo-Techniczna, Olsztyn (Poland). Inst. Uprawy Roli i Roslin)
Four crop rotations at increasing share of winter wheat: 50, 67, 75 and 100% and two NPK fertilization levels: 150 and 300 kg per hectare, intermitted by a regenerating plant, were estimated basing on the results of 9-year experiments located on medium-heavy soil. A distinct decrement of grain yields (13%) occurred only after three-fold sowing wheat after wheat (75%). In the continuous 9-year monoculture the yields decreased by 21%. At the 75% share of winter wheat the protein yields decreased by 16% as compared with 50% share in the crop rotation and as much as 30% in the 9-year monoculture
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