Volume 3 Issue 1



Abstract : A farm level irrigation water management decision support system (DSS - IWM) was developed based on Soil Water Balance - Crop Yield Benefit (SWAB - CRYB) model,crop phenology model,root growth model,crop yield response function,soil parameters,weathe r data and irrigation management strategies. The DSS - IWM needs four input data files related to crop,soil,climate and irrigation strategies. In DSS - IWM Penman - Monteith method was used to estimate crop water requirement considering daily crop coefficients . Soil water balance was carried out to obtain actual crop evapotranspiration (ETa),using linear root growth model. Actual crop yield was estimated with crop yield response models incorporating crop growth stages and response of water stress to each crop growth stage. Economic model was developed to estimate net benefits from farms. DSS - IWM enables the estimation of soil moisture in the root zone,actual evapotranspiration and return flow to the groundwater due to irrigation in terms of deep percolation,c rop yield and net benefits by simulating the different processes responsible for soil water balance in the root zone. The DSS - IWM can be used for evaluation of effect of certain irrigation plan on crop yield reduction. A case study of wheat crop irrigation water management by DSS - IWM showed its practical value and benefits. It could be an objective oriented and practical irrigation water management decision - making tool.

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Downloads : 1485

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Modified Date : 2016-01-20

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S. A. KADAM , M. A. TAMBOLI, S. D. GORANTIWAR , P. C. JAYAPAL , "DSS-IWM: A FARM LEVEL DECISION SUPPORT SYSTEM FOR IRRIGATION WATER MANAGEMENT", IJIERT - International Journal of Innovations in Engineering Research and Technology, Volume 3 Issue 1, ISSN : 2394-3696, Page No.