Development of Irrigation Regime of Limited and Unlimited Water Supply for Satisfactory Rice Yield

Biswal, Poonam, Swain, Dillip K, Jha, Madan K, Mohan, Geetha and Matsuda, Hirotaka, (2021). Development of Irrigation Regime of Limited and Unlimited Water Supply for Satisfactory Rice Yield. Journal of Agronomy & Agricultural Science, 4(28), n/a-n/a

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  • Sub-type Journal article
    Author Biswal, Poonam
    Swain, Dillip K
    Jha, Madan K
    Mohan, Geetha
    Matsuda, Hirotaka
    Title Development of Irrigation Regime of Limited and Unlimited Water Supply for Satisfactory Rice Yield
    Appearing in Journal of Agronomy & Agricultural Science
    Volume 4
    Issue No. 28
    Publication Date 2021-01-28
    Place of Publication Herndon
    Publisher Herald Scholarly Open Access
    Start page n/a
    End page n/a
    Language eng
    Abstract Rice is the staple food for majority of the population worldwide and is a water-consuming crop. Decreasing water availability due to climate change necessitates the development of water saving rice production technology. The objective of this study was to develop water management strategies for two contrast scenarios of water availability for improvement of rice yield with high water productivity. A pot experiment using different levels of water percentages for water management treatments in rice was conducted inside a greenhouse during the wet season of 2018 and 2019 in the research farm of Agricultural and Food Engineering Department of Indian Institute of Technology Kharagpur, India. The water management treatments were flooded (+5 cm water depth was maintained), saturated, and irrigation at 0.4, 0.6, and 0.8 bar soil water tension (water applied up to saturation whenever the soil moisture reached the specified level (0.4, 0.6, and 0.8 bar in 0-20 cm soil depth)). Under limited water availability, irrigation at 0.6 bar gave statistically comparable yield as in saturation (0 bar), while saving 28% water with 8% higher water productivity. Further increasing the water stress up to 0.8 bar gave significantly lower yield (54%) than saturation level. Under non-limited water availability, the yield of saturation was comparable with flood irrigation while saving 27% irrigation water.
    Keyword Rice yield
    Soil water tension
    Water productivity
    Water stress
    Limited water
    Copyright Holder The Authors
    Copyright Year 2021
    Copyright type Creative commons
    DOI https://doi.org/10.24966/AAS-8292/100028
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    Created: Mon, 25 Apr 2022, 13:41:38 JST by Hanna Takemoto on behalf of UNU IAS