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Beyond semi-dwarf wheat yield increases: impacts on the Australian wheat industry of on-going spillovers from the International Maize and Wheat Improvement Center AgEcon
Brennan, John P..
Wheat genetic materials developed from research at the International Maize and Wheat Improvement Center (CIMMYT) in Mexico for developing countries have provided spillover benefits to Australia. Varieties developed from those genetic materials have resulted in yield increases in Australia. While the initial impact came through the introduction of higher-yielding semi-dwarf wheat crops, those impacts have continued in the post-semidwarf period. CIMMYT’s success in developing countries has also reduced the world price for wheat. While the lower prices affect returns in Australia, the increased yields in Australia from the CIMMYT spillovers from both the semi-dwarfs and the postsemidwarf phases have provided benefits to Australia averaging A $30 million per...
Tipo: Article Palavras-chave: R&D evaluation; R&D policy; Spillovers; Technology adoption; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies.
Ano: 2007 URL: http://purl.umn.edu/118519
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Economic Surplus Measurement in Multi-Market Models AgEcon
Zhao, Xueyan; Mullen, John D.; Griffith, Garry R..
Despite continuing controversy, economic surplus concepts have continued to be used in empirical cost-benefit analyses as measures of welfare to producers and consumers. In this paper, the issue of measuring changes in producer and consumer surplus resulting from exogenous supply or demand shifts in multi-market models is examined using a two-input and two-output equilibrium displacement model. When markets are related through both demand and supply, it is shown that significant errors are possible when conventional economic surplus areas are used incorrectly. The economic surplus change to producers or consumers should be measured sequentially in the two markets and then added up.
Tipo: Working or Discussion Paper Palavras-chave: Equilibrium displacement model; Multi-market; Economic surplus; R&D evaluation; Demand and Price Analysis.
Ano: 2005 URL: http://purl.umn.edu/12910
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Jointly selecting for fibre diameter and fleece weight: A market-level assessment of the QPLU$ Merino breeding project AgEcon
Mounter, Stuart W.; Griffith, Garry R.; Mullen, John D..
The QPLU$ Merino breeding project began in the early 1990s. The aim of the project was to demonstrate the efficiency of using a selection index to achieve breeding objectives. A number of selection lines were created from three strains of Merino sheep. During the ten-year course of the project, selection of each line was undertaken using an index based on measurements of fleece weight and fibre diameter. Different emphases were placed on each trait in each selected line. This paper estimates the potential aggregate returns of the project to the Australian sheep and wool industries using an equilibrium displacement model.
Tipo: Conference Paper or Presentation Palavras-chave: Australian sheep and wool industries; Equilibrium displacement model; Cross-commodity relationships; R&D evaluation; Livestock Production/Industries; Research and Development/Tech Change/Emerging Technologies; Research Methods/ Statistical Methods.
Ano: 2008 URL: http://purl.umn.edu/6046
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