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EFFECT OF IRRIGATION AND NITROGEN ON YIELD, WATER AND NITROGEN USE EFFICIENCY IN RAJMASH (PHASEOLUS VULGARIS L.)

Article Id: ARCC2410 | Page : 40 - 43
Citation :- EFFECT OF IRRIGATION AND NITROGEN ON YIELD, WATER AND NITROGEN USE EFFICIENCY IN RAJMASH (PHASEOLUS VULGARIS L.).Legume Research.2008.(31):40 - 43
A.K. Behura1, P.K. Mahapatra2 and D. Swain3
Address : Regional Research and Technology Transfer Station (OUAT) Keonjhar – 758 001 (Orissa), India

Abstract

A field experiment was conducted during winter season of 1996-97 and 1997-98 to study the
effect of irrigation (IW/CPE ratio of 1.0, 1.2 and 1.4) and nitrogen (0, 40, 80 and 120 kg/ha) on yield,
water and nitrogen use efficiency in rajmash. Scheduling irrigation at IW/CPE of 1.4 had significant
effect on yield (1854 kg/ha). It responded to application of nitrogen @ 80 kg/ha (1912 kg/ha).
Rajmash extracted 35.3 cm of water having consumptive use (CU) of 40.5 cm and WUE of 45.8 kg/
ha-cm at IW/CPE ratio of 1.4. Application of nitrogen @ 80 kg/ha resulted in the extraction of 34.0
cm of water having CU 39.3 cm and WUE of 48.7 kg/ha-cm. Irrigation made at IW/CPE ratio of 1.4
had the highest apparent nitrogen recovery (44.92%) and agronomic nitrogen use efficiency (9.37
kg seed/kg N applied). The physiological efficiency (PE) ranged from 20.56 to 21.85 kg seed/kg N
uptake at varying irrigation levels. Nitrogen applied at 40 kg/ha had the highest ANR%, PE and
ANUE, which decreased progressively with successive increase in nitrogen levels

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