EFFECT OF IRRIGATION, PHOSPHORUS AND ROW SPACING ON PHYSIOLOGICAL CHARACTERS OF PEA (PISUM-SATIVUM)

A field experiment was conducted during the winter seasons of 1984-85 and 1985-86 to study the effect of schedules of irrigation, levels of P2O5 along with 2 spacings (25 and 50 cm) on physiological characters of pea (Pisum sativum L. sensu lato). The maximum leaf area/plant was noted with 2 irrigations given at 50 and 70 days after sowing and the highest leaf-area ratio with 1 irrigation at 50 days after sowing duri ng both the years. Application of P2O5 improved the leaf area, leaf-ar ea index and leaf-area ratio over the control, but increase in row wid th reduced these parameters along with relative growth rate. Significa nt reduction in relative growth rate of pea was noted with application of irrigation and P2O5.