@article{Chabot:127714,
      recid = {127714},
      author = {Chabot, Phillippe and Kyle, Steven C.},
      title = {Agricultural Land Use in Northwest Uzbekistan: A Linear  Programming Model for Mapping Agricultural Incentives},
      address = {1998-12},
      number = {642-2016-44156},
      series = {WP},
      pages = {34},
      year = {1998},
      abstract = {This study uses a linear programming model ofa  representative state farm in the region Karakalpakstan in  the republic ofUzbekistan to evaluate how producer  incentives and cropping patterns may change given both  changes in state pricing policy and changes in the  availability and cost of irrigation water.
Cotton has long  been the dominant crop in this area, and Uzbekistan is  currently the world's second largest exporter. Cotton  production has expanded tremendously over the past 30 years  almost entirely through the extension ofvery large state  sponsored irrigation projects. However, despite large  investments and production increases, productivity and  efficiency remain low. Agriculture in the region is  characterized by state control at all levels of  agricultural production, while extensive cotton  monocropping has created a myriad of environmental problems  that have attracted international attention. Should policy  reforms be implemented in the form ofthe removal ofstate  controls together with changes in water management, it is  likely that relative incentives for the production ofmajor  crops would change significantly.
There are two primary  objectives ofthis paper. First is an evaluation ofhow  production incentives for different crops change as state  intervention in the agricultural sector is reduced and/or  eliminated. Second, the study evaluates how producer  incentives change based on different assumptions about the  availability and cost of irrigation water which at present  is provided free ofcharge.
Results indicate that if state  interventions were to be reduced, there would not  necessarily be a significant change in cropping patterns  from those currently practiced. However, a supply function  for cotton output is generated and shows an elasticity  consistently greater than one indicating that, at least  according to model parameters, area planted to cotton
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is  highly responsive to changes in output price. Results also  demonstrate that the elimination
of state intervention may  not result in an increase in farm income which indicates  that taxes
extracted from the sector in the form oflow  prices for farm output are, at least to a first order
of  approximation, offset by subsidies for other farm inputs  which occur mostly in the form of no fee for irrigation  water. Model results also demonstrate that changes in water  availability have a significant impact on the optimal  cropping pattern. With large quantities ofwater available  rice production is favored. However, with reduced  quantities ofwater, the optimal cropping pattern quickly  shifts away from rice toward other less water consumptive  crops. Model results also indicate that the marginal value  product ofwater is significantly positive, indicating that  implementing fees would not necessarily cause producers to  alter existing cropping patterns. A version ofRybczinski's  theorem is shown to hold for the relation between water  availability and there area planted to water intensive  crops.},
      url = {http://ageconsearch.umn.edu/record/127714},
      doi = {https://doi.org/10.22004/ag.econ.127714},
}