1 AIT Asian Institute of Technology

Planning optimal crop and water allocation in irrigation systems

AuthorMalla, Romi
Call NumberAIT Thesis no. WA-92-27
Subject(s)Crops and water--Linear programming
NoteA thesis submitted in partial fulfillment of the requirements for the Degree of Master of Engineering, School of Engineering and Technology
PublisherAsian Institute of Technology
AbstractThis study deals with water allocation in large irrigation systems for diversified cropping pattern.Different optimisation techriiques available for optimal water allocation namely,crop production function,Linear Programming,Quadratic Programming and Separable Programming are considered.An effort has been made in the study to compare the results obtained by these techniques by formulation of models to allocate water optimally to maximize benefit .The results obtained by various methods are found to be compatible,though each method have their own limitations .The allocations are done on seasonal basis for which purpose,the crop production functions are developed from available data.The results of the models incorporating the crop production functions (crop production function,Quadratic and Separable Programming technique)depend on the accuracy of the crop production functions used.Hence, the development of crop production function is found to be an important step in water allocation in these techniques.The Linear Programming model, though used fixed yield approach is found to be a very flexible method for water allocation . An integrated Land allocation simulation model is also tried upon to show the importance of the time series water allocation though the seasonal water allocation is satisfied. The weekly available water of the past three years are used for the analysis purpose setforth.Due to unlimited water availability,efficient use of the water available has been given emphasis in the model.Results obtained from the model application are found to be practically acceptable . All the models developed are applied on a paddy and sugarcane dominated irrigation system under diversified cropping pattern during the dry and wet season(ie,whole year). The selected study area is the Thamaka-subproject in the Maeklong irrigation project.
Year1992
TypeThesis
SchoolSchool of Engineering and Technology (SET)
DepartmentOther Field of Studies (No Department)
Academic Program/FoSWater Resources Research Engineering (WA)
Chairperson(s)Murty, V.V.N
Examination Committee(s)Loof, Rainer ;Harboe, Ricardo
Scholarship Donor(s)DAAD ( Federal Republic of Germany)
DegreeThesis (M.Eng.) - Asian Institute of Technology, 1992


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