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\hypersetup{pdftitle={Water Resource Allocation for Optimal Selection of Agricultural Crops in Gezira Irrigation Scheme, Sudan},pdfauthor={Mohamed Elgali, Rajaa Mustafa, Siegfried Bauer},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Gezira, non-linear programing, Sudan, water scarcity},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
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\begin{center}
\Large{\textbf{Water Resource Allocation for Optimal Selection of Agricultural Crops in Gezira Irrigation Scheme, Sudan\footnote{\textbf{Contact Address:} Mohamed Elgali, University of Gezira, Agricultural Economics, Nishisheeba No. 25, 11112~Madani, Sudan, \mbox{e-mail}: \email{moelgali@yahoo.com}}\\[0.8ex]}}
\normalsize{\textsc{Mohamed Elgali$^{1}$, Rajaa Mustafa$^{1}$, Siegfried Bauer$^{2}$}}
\end{center}
\begin{itemize*}
\item[]{\small{\textit{$^{1}$University of Gezira, Agricultural Economics, Sudan}}}
\item[]{\small{\textit{$^{2}$Justus-Liebig University Giessen, Inst. of Farm and Agribusiness Management - Project and Regional Planning, Germany}}}
\end{itemize*}
\index[author]{Elgali, Mohamed}
\index[author]{Mustafa, Rajaa}
\index[author]{Bauer, Siegfried}
\begin{center}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
The Gezira Irrigation Scheme in Sudan, is with 880,000 ha one of the largest irrigation schemes on the African continent. Recently, under the reform process and privatisation of the scheme a new partnership for irrigation water has been established between the government and the farmers. Under the new arrangement, farmers are responsible for maintenance and operation of the water canals at farm level, while the government is responsible for managing water sources and main canals in the scheme. 



The aim of this paper is to review the irrigation water partnership in the Gezira scheme. In addition a plan is set up for an optimal cropping pattern in the irrigation scheme under the new partnership and the water scarcity conditions. A non-linear programming model has been developed to suggest the optimal cropping pattern for maximizing net returns and ensuring efficient water use. The model also used to determine how much land should be allocated for each crop under available water resources. Data were collected from primary and secondary sources to derive the model's coefficients. The primary data were obtained through personal interviews using designed questionnaire covering 100 farmers who were selected randomly from different locations in the scheme. The model results showed that the optimal farm plan include non-traditional crops such as carrots and onions besides sorghum as a traditional activity in the scheme. The study recommends farmers in the Gezira scheme to take into consideration water scarcity when planning for selecting the optimal crop pattern for sustainable production.}

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\noindent \textbf{Keywords:} Gezira, non"=linear programing, Sudan, water scarcity
\index[key]{Gezira}
\index[key]{Non"=linear programing}
\index[key]{Sudan}
\index[key]{Water!scarcity}
\end{document}
