Ecology, Environment and Conservation Paper

Vol 24, Feb. Suppl. Issue 2018; Page No.(142-145)

INFLUENCE OF IRRIGATION REGIMES ON GROWTH AND YIELD OF MUSTARD (BRASSICA JUNCEA L)

Daleshwar Rajak

Abstract

A field experiment was conducted at Zonal Research Station, Darisai, East Singhbhum, Jharkhand during rabi season of 2004-05 to 2006-07 to find out the water requirement of mustard crop and to find the optimum irrigation regime for increasing the productivity of mustard due to irrigation scheduling based on IW/CPE ratio. The experiments were laid out in randomized block design with four treatments which included three levels of irrigation treatments based on IW/CPE ratio viz., 0.6, 0.8, 1.0 with 50 mm depth of irrigation water (IW) and three irrigation (at seed priming stage, flowering stage and grain filling stage) in five replications. Scheduling of irrigation at I1- 0.8 gave maximum grain yield (7.89 q ha-1) followed by scheduling of irrigation at I1- 1.0 (7.19 q/ha) and both these treatments were significantly superior to the remaining treatments. The soil moisture content in the effective root zone at the time of harvest was 13.18%, 12.11%, 11.87% and 10.70% respectively at I3-1.0, I2-0.8, I1-0.6 and I4-3 irrigation. The highest net income (Rs. 11657.74) and benefit cost ratio (1.34) was obtained when scheduling of irrigation was done at I2-0.8.

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