Water dynamics, productivity and heat use efficiency responses in wheat (Triticum aestivum) to land configuration techniques and irrigation schedules

G A RAJANNA; A S DHINDWAL

doi:10.56093/ijas.v89i6.90758

Authors

G A RAJANNA Scientist, ICAR-IARI, New Delhi
A S DHINDWAL Former Head, CCS Haryana Agricultural University, Hisar, Haryana 125 004, India

https://doi.org/10.56093/ijas.v89i6.90758

Keywords:

FIRBS, GWC, Heat units, HUE, Productivity, Water use

Abstract

The present study was conducted during 2012â€“13 and 2013â€“14 to investigate the effect of different land configurations and irrigation schedules on soil water depletion, ground water contribution (GWC), productivity and heat use efficiency of wheat (Triticum aestivum L. emend. Flori & Paol). Results of the two years study exhibited highest grain yield by 24.7% and 17.4%, water use efficiency (WUE) by 38.8% and 35.7%, respectively, under furrow irrigated raised beds (FIRBS) over conventional tillage (CT). Soil moisture depletion, GWC and total consumptive water use were lowered by 21% and 15%, 20% and 16%, and 12% and 9%, respectively over CT in both the years. Under zero tillage (ZT) condition, wheat accumulated highest growing degree days (GDD) of 3288Â°C day and 3321Â°C day, respectively. Furthermore, FIRBS and ZT plots accumulated additional heat units of 1000Â°C day-hour till maturity in both the years. Among the irrigation schedules, contribution of irrigation water towards consumptive water use was highest by 41.8% and 43.6% in IW:CPE=0.90 over others in 2 years, respectively. Irrigation water productivity (WPI) was highest by 45.8% and 43.3% in IW:CPE=0.75, respectively.

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