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Research Article Open access CC BY 4.0

Spatio-temporal Variability of Reference Evapotranspiration and Trend Analyze of Crop Water Requirement

Ronald Mayengbam, Shraddha Rawat

International Journal of Environment and Climate Change · pp. 382–391 · Published 10 Feb 2024

10.9734/ijecc/2024/v14i23953

Abstract

The study was aimed to analyse the trend of Reference Evapotranspiration (ETo) for estimation of Crop Water Requirement (CWR) for Rice (Oryza sativum) cultivation in Manipur from 2011-2021 in 16 districts (Bisnupur, Churachandpur, Jiribam, Imphal East, Kamjong, Senapati, Imphal West, Tengnoupal, Ukhrul, Thoubal, Noney, Pherzwal, Chandel, Kakching, Tamenglong and Kangpokpi) ETo and CWR was estimated using CROPWAT. Spatial trends of climate variables were analysed using Mann– Kendall test and Sen’s slope estimator.

Crop water requirement cropwat rice reference evapotranspiration rice cultivation

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