An Econometric Analysis of Cotton Production Technologies in Harran Plain, Turkey： Translog versus Cobb-Douglas Functions

作     者：T. Isgin R. Ozel A. Bilgic S. Ipekcioglu 

作者机构：Department of Agricultural Economics University of Harran Osmanbey Campus Block D-52 Sanliurfa 63100 Turkey Soil-Water Resources and Agricultural Research Institute for the Southeastern Anatolia Project Sanliurfa 63300 Turkey 

出 版 物：《Journal of Agricultural Science and Technology(B)》 (农业科学与技术（B）)

年 卷 期：2011年第1卷第3期

页      面：420-427页

学科分类：020209[经济学-数量经济学] 02[经济学] 0202[经济学-应用经济学] 09[农学] 0901[农学-作物学] 

主　　题：Cotton translog model cobb-douglas model weak separability Turkey constant returns to scale. 

摘      要：This research explores the question of how the three production factors, capital, labor, and land may impact the current level of cotton output on the Harran Plain, a major cotton production area in Turkey. The objective of this paper is to estimate a Translog production function and compare the results to those from a Cobb-Douglas specification. Nested tests we performed resulted in the conclusion that the constant returns to scale, weak separability and Cobb-Douglas hypotheses are all satisfied. Thus the Cobb-Douglas specification is a superior functional form yielding results more robust than those from the translog model. Dwelling on Cobb-Douglas estimation results, farm size is found the most influential variable determining cotton output, followed by the variable representing capital as the second influential. Results also demonstrate that the returns-to-scale parameter calculated for this sample is not statistically different from unity, suggesting that cotton production technology in this region exhibits constant returns to scale. This result is consistent with current literature findings that render support to an inverse relationship between farm size and productivity in developing countries.