Assessment of crop yield and water footprint of kharif paddy production under different rainfall years

Abstract

The assessment of the water footprint of paddy production has been of great significance to water resource planning and management. This study quantifies the paddy yield and water footprint under different rainfall conditions for the period 2011-2020. In agriculture, water footprint, crop yield, and evapotranspiration need to be estimated. AquaCrop GIS software is used to simulate the yield of paddy and evapotranspiration. The results show the average yields of Imphal East and Imphal West as 3.27 t/ha and 3.32 t/ha, respectively. The R2 -value of simulated and actual yields in Imphal East and Imphal West as 0.916 and 0.911, respectively. The green water footprint of paddy is found to be higher than the blue water footprint. This study shows the importance of rainwater and allows increasing the paddy yield by more use of green water and reduced blue water use in the future.

Keywords

• aquacrop gis
• water footprint
• crop yield
• paddy
• evapotranspiration