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Crop Water Stress Indices and Evapotranspiration Estimation



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The Crop water stress index (CWSI) and water deficit index (WDI) of wheat crop were developed using canopy air temperature difference (Tc-Ta)and vapour pressure deficit for scheduling irrigation. These values were varied with the change in soil moisture content and indicated water stresses of crop, which coincided with the moisture sensitive growth stages of wheat crop. Study was conducted in the Kangsabati Irrigation command, India for irrigation scheduling and crop yield modelling using remote sensing and GIS. The crop coefficients of wheat crop were generated using remote sensing based SAVI values. The ETo values were computed as per the Penman- Monteith method FAO-56. The evapotranspiration (ETc) computed using ETo and the Kc generated from SAVI values of wheat crop. Wheat crop yield models were developed using the remote sensing derived AREASUM of SAVI values. The developed yield models have predicted the wheat crop yield for the study command. The performance of irrigation command was evaluated by computing various irrigation efficiencies using remote sensing generated yields and water demand of crop.






The Crop water stress index (CWSI) and water deficit index (WDI) of wheat crop were developed using canopy air temperature difference (Tc-Ta)and vapour pressure deficit for scheduling irrigation. These values were varied with the change in soil moisture content and indicated water stresses of crop, which coincided with the moisture sensitive growth stages of wheat crop. Study was conducted in the Kangsabati Irrigation command, India for irrigation scheduling and crop yield modelling using remote sensing and GIS. The crop coefficients of wheat crop were generated using remote sensing based SAVI values. The ETo values were computed as per the Penman- Monteith method FAO-56. The evapotranspiration (ETc) computed using ETo and the Kc generated from SAVI values of wheat crop. Wheat crop yield models were developed using the remote sensing derived AREASUM of SAVI values. The developed yield models have predicted the wheat crop yield for the study command. The performance of irrigation command was evaluated by computing various irrigation efficiencies using remote sensing generated yields and water demand of crop.


We derive a WS index named. Valverde1 R. Sentinel1 radar data were calibrated using SNAP software. to calculate the Crop Water Stress Index CWSI from canopy temperature and energy balance . Consequently ET is used interchangeably with crop water use. by A Yazar Cited by 213 Title EVALUATION OF CROP WATER STRESS INDEX FOR LEPA .


Crop Water Stress Index

by S Taghvaeian 2012 Cited by 72 CWSI values were also used to estimate maize actual transpiration Ta. evapotranspiration needs as irrigation must replenish soil mois ture deficit from . data to do the estimation of crop coefficients and crop evapotranspiration and analyze the dynamics of these paramenters in response to plant phenology and water availability to be used as. Therefore accurate estimations of evapotranspiration ET at proper spatialtemporal scales are critical to understand the crop water demand. Buy Crop Water Stress Indices and Evapotranspiration Estimation by Gontia Narendra Kumar Narayan Tiwari Kamlesh online on Amazon.ae at best prices. Crop Water Stress Indices and Evapotranspiration Estimation Gontia Narendra Kumar 4896 z. typically based on actual crop water consumptive use not necessarily water applied an understanding of crop evapotranspiration ET under water stress is also required. 1 Carretera HuimanguilloCárdenas. One of the main assump .


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