The aim of research is study of economic maize production in Kohgiluyeh and Boyer-Ahmad (Case study of Gachsaran city). Data and information needed for have been gathered from the crop year of 2008-2009 that with sample random sampling of 120 Gachsaran city\'s planters of maize through questionnaires and interviews. Estimating and analysis of Cobb - Douglas and Transcendental Production Functions, and with test of an excellence model, the Cobb - Douglas was chosen as the top model. The results showed that farmers use cultivation inputs, seeds, chemical phosphate fertilizers, potash and urea herbicide spraying pesticides, irrigation frequency and machines in the second economical region, and other inputs including pesticides, pesticides, manure and labor are used in the third economical region. Returns to scale ratio was calculated equivalent to 1.46 and indicates that if all inputs affecting output be , the production increases over times. Calculation of technical efficiency of maize cultivation showed that the mean technical efficiency using stochastic frontier production function of cultivated corn is 97%, and show that with improved management, technical performance can be increased only by 3%. So to increase the production, new technology should be entering into the area.

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