Estimation of Water Requirements in Rice and Groundnut Crops over Telangana

Author: Kanagala Pavani* and Satyendra Nath

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Abstract

The present research work was carried out to study the water requirements of rice and groundnut crops grown in Telangana districts for baseline (1981-2018) period. Weather data was collected from CRIDA Hyderabad, for computing reference evapotranspiration (ETo), effective rainfall, crop and irrigation water requirements using CROPWAT 8.0 model software. The analysis showed that ETo was at peak in month of May while it was minimum during the month of December. The simulation studies also indicated that there is a substantial increase in ETo values for future line period 2025 & 2030 due to increase in temperature. The crop water requirements for rice crop cultivated during kharif season was estimated to be 727.4mm. The groundnut crop requires 325.5mm water to attain maturity. The maximum irrigation water requirements for rice crop was 1011mm during kharif. It was also estimated that irrigation water requirement for groundnut was about 42.5mm for baseline period. The projected weather for

Keywords

Crop water requirement; Irrigation water requirement; Reference evapotranspiration; Effective rainfall, CROPWAT, ArcGis

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