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W 3-letnich badaniach polowych przeprowadzonych w IHAR Oddział Jadwisin określono wpływ obornika i zróżnicowanych dawek frakcji odpadowej węgla brunatnego oraz nawozów mineralnych na plon bulw, zawartość manganu, cynku i miedzi w glebie oraz bulwach ziemniaka. Doświadczenia przeprowadzono na glebie lekkiej, kwaśnej w układzie 2-czynnikowym obejmującym rodzaj nawożenia (A-bez nawozów organicznych,...
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