Author(s): G. Satyanarayana Reddy, P. Bandyopadhyay

Abstract: Field experiment was conducted using split-plot design during boro season of 2012-13 and 2013-14, to study the influence of different irrigation scheduling and weed management practices on growth, yield and water use efficiency of lowland transplanted rice. The experimental results revealed that among the irrigation regimes, continuous submergence of 5±2 (I1) gave the significantly higher growth and yield attributing characters resulted in maximum grain yield 6471 kg ha-1 with low water use efficiency 5.0 kg ha-1 mm-1 (pooled of 2 yrs). Continuous saturation treatment (I5) gives just 7.82% less grain yield with high water use efficiency 13.7 kg ha-1 mm-1 (pooled of 2 yrs) than the I1 treatment. Whereas among the weed management practices, weed-free check followed by W3-Pretilachlor 50% EC on 1 DAT + hand weeding on 40 DAT, W5-Hand weeding twice on 20 and 40 DAT and W4-Bispyribac sodium 10% SC on 20 DAT + hand weeding on 40 DAT gave significantly higher growth, yield attributing characters and yield with high water use efficiency.

Download Full Article: Click Here