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Effect of High- yield Varieties on Rice Production Growth : An Mathematical and Econometrics Analysis


Rice is the most important staple food crop for more than half of the world's population. World rice production therefore needs to be increased, while land, water and labour are all decreasing. This paper aims to determine Effect of high-yield varieties on rice production growth. Production function decomposition analysis is used to decompose the difference in the rice output between new and old rice production technologies (application of High-yield and Local varieties) into technical change and change in quantities of inputs. The study was based on cross-section input-output data collected at one time (2004) from sample farmers including 100 observations, case study Mazandaran province-Iran. In the first stage, a dummy variable is defined as technology phrase (high-yield varieties) in the pooled production function. The results show that the regression coefficient of dummy variable in pooled production function is significant. Therefore, it is implied that there is structural break in production relation with the introduction of high-yield varieties in rice production. In the second stage, production function decomposition analysis was used to decompose the difference in the rice output between new and old rice production technologies (application of high-yield varieties) into technical change and change in quantities of inputs. The results show that total growth in rice yield by shifting to new rice production technology was about 126 percent. However, the estimated growth in neat output was 124 percent of which 76 percent was contributed by technology. This means that 76 percent more output could be produced with new technology instead of using old technology level of inputs. Secondly, the contribution of in- creased level of inputs was 48 percent. Among the inputs, the contribution of area under rice (23 percent) was the highest, followed by labour (17 percent) and pesticide (8 percent). Additionally, the total value of inputs saved (VIS) on the sample farms with new technology was estimated to be 63622 ten thousand Rials. In other words, in order to produce 520 tones of rice by adopting old technology (application of Local varieties), fanners required 147336 ten thousand Rials as against only 83714 ten thousand Rials with new rice production technology. Besides, The estimated additional quantity of rice output with new technology using old technology level of inputs was 174. 8 tones on the sample farms.......

【作者名称】: Yaser Feizabadi
【作者单位】: Islamic Azad University of Gaemshahr Branch, Department of Agricultural Economics -Iran
【关 键 词】: rice, high-yield and local varieties, technical change, decomposition model, new and old rice production technology, production function
【会议名称】: Industrialization of Hybrid Rice
【期刊论文数据库】: [DBS_Articles_01]
【期刊论文编号】: 101,065,241
【摘要长度】: 2,452
【会议地点】: Nanchang(CN)
【会议组织】: Islamic Azad University of Gaemshahr Branch, Department of Agricultural Economics -Iran
【会议时间】: 2005
【上篇论文】: 外文会议 - New insights into the diet-microbiome-productivity relationship in dairy cows
【下篇论文】: 外文会议 - Drought Proofing and Rain Water Harvesting in a Micro Region: Issues of Access, Efficient Use and Multi-Level Planning

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