Role of precision irrigation scheduling and residue-retention practices on water-use efficiency and wheat (Triticum aestivum) yield in north-western plains of India
DOI:
https://doi.org/10.59797/ija.v63i2.5403Keywords:
Crop residue, Economics, Irrigation scheduling, Water use efficiency, WheatAbstract
The field experiment was carried out in split-plot design during the winter (rabi) seasons of 2011–12 to 2014– 15 at Karnal, Haryana, to study the effect of precision irrigation scheduling and conservation agricultural practices on yield and water-use efficiency (WUE) of wheat (Triticum aestivum L.) crop in north-western plains of India. The crop residue retention @ 2.5 t/ha resulted in significantly higher grain yield (5.73 t/ha) and generated a net return of ( 42,645/ha) in comparison to no-crop residue retention (5.54 t/ha) and residue retention @ 5 t/ha (5.61 t/ha). Application of less volume of water at greater frequency via tensiometer-based irrigation scheduling helped conserve water. The tensiometer-based irrigation scheduling proved far superior to the other irrigation practices for the fact that irrigation scheduling was significantly affected based on SWP. The water-use efficiency under irrigation scheduled at 80 kPa was the highest (1.95 kg/m3 ) followed by 60 kPa (1.45 kg/m3 ) and irrigations scheduled at critical growth stages (1.11 kg/m3), though yield at 80 kPa was significantly lower than other 2 irrigation schedules. Irrigation scheduling at 60 kPa yielded higher and also was more efficient than irrigation at all critical growth stages.
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