Abstract
Production function is one that determines the output of a firm, an industry, or an entire economy for all combinations of inputs. This paper engaged Cob-Douglas production functions to test the factors effective on walnut (Juglans regia) production in Hamadan, Fars and Semnan provinces. The cross-sectional data collected from 383 Walnut Growers by questionnaire with interview schedule. The variables of this study were Zulonfloo poison, labor, machinery, Iron fertilization, water and acreage. The Cob-Douglas production function selected as the most appropriate model to analyze the walnut production function. Econometric analysis results revealed that walnut growers have used the factors of production in the second area of production. The Findings also showed the elasticity of factors production such as Zulonfloo poison, labor, machinery, Iron fertilization, water. The result showed that there is increase of Returns to scale in walnut orchards of Hamadan, Fars and Semnan provinces. DOI: 10.5901/mjss.2016.v7n3s3p312
Highlights
Walnuts are part of the tree nut family
In addition to the data obtained by surveys, previous studies of related organizations such as Food and Agricultural Organization (FAO) and Ministry of Jihad-e-Agriculture of Iran (MAJ) were utilized during this study
3.1 Selection of the suitable model: Different production functions were estimated to analyze the walnut production in Hamadan, Fars and Semnan provinces which Cob-Douglas and transcendental production functions were selected between them
Summary
Walnuts are part of the tree nut family. This food family includes hazelnuts (filberts), pistachios, pecans, pine nuts... and walnuts. ((Anonymous (2008)), (Anonymous (2012))) Walnuts are a rich source of heart-healthy monounsaturated fats and an excellent source of those hard to find omega-3 fatty acids, walnut seeds are high density source of nutrients, proteins and essential fatty acids. 100 grams of walnuts contain 15.2 gram protein, 65.2 gram fat, and 6.7 gram dietary fiber. The result showed that the average of technical efficiency was 75 percent. Stochastic frontier production function has been used to determine efficiency of cotton and Sava Their results showed that with current technology, there is a possibility of increasing profits. The results showed that increasing of Kolza production up to increasing of acreage and other variables such as poison and fertilizer have effective significant on production of Kolza. Binam and et al (2004) determined the effective factors on technical efficiency of farmers in Cameroon forests and agricultural systems, including groundnut, maize and groundnut - maize using stochastic frontier Cobb - Douglas production function. The results showed that the average of technical efficiency of the systems were 77, 73 and 75 percent respectively. In this paper production function was used which technical efficiency was used as one of their variables. The result showed that the technical efficiency of farmers had been 67.01 percent
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