Modeling crop land soil moisture and impacts of supplimental irrigaiton in a rainfed region of Bangladesh

Pramod K. Pandey, Sagor Biswas

Department of Population Health and Reproduction, University of Californian, Davis, USA;.

DOI: 10.4236/jacen.2014.31B004                

Abstract

A robust water balance model has been tested for predicting soil moisture levels and supplemental irrigation requirement of a rainfed region of Bangladesh. The predictions were used for improving the understanding of the impacts of rainwater harvesting on rainfed agriculture. The climate data (i.e., rainfall, temperature, evaporation, and evapotranspiration) were used as inputs for predicting the variations in soil moisture. Soil moisture levels under rainfed and supplementary irrigation conditions were compared. Results showed that rainwater harvesting i.e., rain water storage tanks during rainy seasons can be potentially useful for storing rainwater, which can be utilized for enhancing crop land soil moisture during dry seasons for enhancing crop yield. The study presented here will be useful for improving and disseminating rainwater harvesting approaches for enhancing water availability in rainfed regions.

Keywords

Rainwater Harvesting; Rainfed Crop Land; Supplemental Irrigation; Crop Yield

Conflicts of Interest

The authors declare no conflicts of interest.

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