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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10250

Title: Estimating the Technical Efficiency of Vegetable Producersatthe Air Conditioned Non-air Conditioned Green HousesUsing Stochastic Frontier Function
Authors: Khalid N. Alrwis
Issue Date: 25-Dec-2010
Abstract: The study aimed at estimating the technical efficiency of vegetable producing air-conditioned and non-air conditioned green houses. The study also aimed at examining the effect of the size of green houses on their technical efficiency within the KSA. The study relied on basic data collected from enquiry forms which were applied to stochastic sample of air conditioned and non-air conditioned green houses. Representing all regions of the KSA. The sample included 62 projects of non-air conditioned projects and 22 projects of air conditioned ones in the summer and autumn of 2007. the study made use of stochastic frontier functions of production according to actual hypotheses about how to deal with the stochastic errors. Based on standard estimates of the stochastic frontier function of the non-air conditioned green houses it appears that the increase in any of the green houses areas the number of employees or the variable costs of 10%, leads to an increase in the producing of vegetable by a percentage of 9%, 0.7% and 0.2% respectively. On the other hand, the increase in the fixed cost, by a percentage of 10%, leads to a decrease in the vegetable producing by 0.6%. the estimated technical efficient by use of the stochastic frontier function for the non-air conditioned green houses ranged from a minimum of 0.10%, a maximum of 0.97% and an average of 0.46%. as for the air conditioned green houses, it appears that an increase in any of the fixed costs, the areas of the greenhouses and the variable costs by 10%, leads to an increase of vegetable producing at percentages of 10.6%, 11.1% and 2.9% respectively. In addition, the estimated technical efficiency of the stochastic frontier function of air conditioned green houses ranged from a minimum of 0.13% a maximum of 0.99% and an average of 0.59. The study recommended upgrading the administrative efficiency of the green house managers in order to increase producing vegetable of the air conditioned and non-air conditioned green houses by a percentage of 50.4% and 41.4 respectively without any increase in the economic resources. Furthermore, the study recommended to expand the green houses projects for producing vegetables since they represent a developed technical approach to increase the producing of the vegetables in both quantity and quality, and helps to produce vegetables in other seasons. Accordingly the fluctuations in prices can be eliminated. In addition, green houses rationalize the consumption of water they save about 60% of water used in open air agriculture. This comes in line with the water security standards of the kingdom of Saudi Arabia
URI: http://hdl.handle.net/123456789/10250
Appears in Collections:College of Foods And Agricultural Science

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