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W latach 1998–2000 prowadzono badania polowe nad wpływem uproszczenia uprawy na pobranie miedzi i cynku w warunkach zróżnicowanego nawożenia azotem (0, 60, 120 i 180 kg N/ha). Ocenie poddano cztery systemy uprawy (klasyczny: orka + obornik OB, siew bezpośredni w mulcz ścierniskowy MS, siew bezpośredni w mulcz zielony z gorczycy białej MG oraz z facelii MF). W wyniku przeprowadzonych badań stwierdzono,...
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