Absorption of nitrate and cations by maize plants with different supply of mineral nutrients to them

Kondrat' ev, M.N.; Khimina, E.G.; Tret' yakov, N.N.

Agrokhimiya (6): 60-70


ISSN/ISBN: 0002-1881
Accession: 001041222

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The amount and proportion of NO3-, NH4+, K+, Ca2+ and Mg2+ ions transported with cell sap depended on the fertilizer form applied to soil and the age of maize plants; the amount and proportion of the cations also depended on their interaction in soil during absorption by roots. The direction of the concentration gradients of distribution of NO3-, K+, Ca2+ and Mg2+ in different leaves coincided in plants given mineral fertilizers, while the concentration gradient of distribution of NO3- was in opposite direction to that of cations in plants given FYM. There was a close association between contents of cations and NO3- in the soil-plant system, whose nature mainly depended on environmental factors.