Articles
EFFECT OF NITROGEN, PHOSPHORUS AND POTASSIUM ON GROWTH AND ELEMENTAL COMPOSITION OF WINGED BEAN, PSOPHOCARPUS TETRAGONOLOBUS (L.) DC., SEEDLINGS
Article number
318_39
Pages
281 – 290
Language
Abstract
Winged bean, Psophocarpus tetragonolobus (L.) DC., strain TPt-1, seedlings were raised in a greenhouse with four levels of N, P and K. When the concentration of one of the elements was 0.00, 0.33, 0.66, or 1.00x, the concentration of the other two elements was kept at 1.00x(1x = 178 mg kg-1 of sand). After 56 days of growth, seedlings were tallest (P≤0.05) with the 1:1:1 (N:P:K) treatments.
Plant height, number of trifoliate leaves, fresh weight of shoots and dry weight of roots decreased as one of the elements in the medium decreased.
In shoots, increasing N-rates increased N and reduced P, K, Mg, Cu, Fe, Mn, Mo, Zn concentrations.
Increased P-rates increased P, K, Mn and Zn concentrations.
Increasing K rates increased K and reduced P, Ca and Mg concentrations.
Plant height, number of trifoliate leaves, fresh weight of shoots and dry weight of roots decreased as one of the elements in the medium decreased.
In shoots, increasing N-rates increased N and reduced P, K, Mg, Cu, Fe, Mn, Mo, Zn concentrations.
Increased P-rates increased P, K, Mn and Zn concentrations.
Increasing K rates increased K and reduced P, Ca and Mg concentrations.
Authors
A. A. Csizinszky
Keywords
Plant height, trifoliate leaves, fresh weight, dry matter, shoots, roots
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