ISHS Acta Horticulturae 318: II International Symposium on Specialty and Exotic Vegetable Crops
GROWTH AND NUTRIENT ACCUMULATION OF WINGED BEAN, PSOPHOCARPUS TETRAGONOLOBUS (L.) DC., SEEDLINGS WITH SEED INOCULUM AND VARIOUS NITROGEN SOURCES |
| Author: | A. A. Csizinszky |
| Keywords: | Plant height, trifoliate leaves, root nodules, elemental composition |
| Abstract:
Winged bean, Psophocarpus tetragonolobus (L.) DC., strain TPt-1, seedlings were grown in a greenhouse from inoculated and non-inoculated seeds with four N treatments. Inoculum was the cowpea strain of the Rhizobium. Nitrogen treatments were: 100% NO3; 70% NO3:30% NH4; 50% NO3:50% NH4; and 100% urea. After 45 days, root nodules were most numerous with inoculum and 50% NO3:50% NH4-N. Nitrogen and Zn concentrations in shoots and Mo concentration in roots were higher (P≤0.05) with than without inoculum. Plants were tallest and number of trifoliate leaves greatest with the 70% NO3:30% NH4-N treatment (P≤0.01). 'Urea N reduced (P≤0.01) plant height, number of trifoliate leaves, dry matter content in shoots and dry weight of roots. | |
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