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In this work are shown the results of 8 years experiment (1987-1994) conducted on permanent meadow in valley of Tuczna river (Jaktorów Meadows). Experiment was established in four replications according to the scheme: 0 - no fertilization, NPK - in doses: N-240, P₂O₅ - 75 i K₂O - 120 kg/ha, manure - 30 t/ha, variable fertilization - one year NPK (doses as in NPK combination), in next year manure (30...
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