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ALTERNATIVE BREEDING INVENTORY SPECIFICATIONS IN A LIVESTOCK MARKET MODEL AgEcon
Vere, David T.; Griffith, Garry R.; Bootle, B.W..
The procedures adopted for incorporating breeding decisions in a livestock market model have implications for the simulation of the model. Specifically, there is a need to consider the nature of the biological lags between livestock breeding decisions and outputs, and how these are incorporated in the breeding inventory used in such a model. In this paper, five alternative breeding inventory specifications are used in a structural econometric model of the Australian prime lamb market. The predictions of lamb slaughterings and of price responses of lamb producers are affected by the specification of the lamb breeding inventory used. The extent to which the modelling results approximated reality was substantially improved when disaggregated and seasonally...
Tipo: Journal Article Palavras-chave: Research Methods/ Statistical Methods.
Ano: 1993 URL: http://purl.umn.edu/22739
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An Economic Evaluation of Research into the Improved Management of the Annual Grass Weed Vulpia in Temperate Pastures in South-Eastern Australia AgEcon
Vere, David T.; Jones, Randall E.; Dowling, Peter.
NSW Agriculture has a history of research investment in managing weed problems in the temperate pasture areas. One focus of that research has been on the development of improved management practices for the major annual grass weed vulpia. Recent surveys have found that weeds comprised up to 80% of pasture biomass in some temperate areas and that typical vulpia contents are between 30 and 40% of pasture biomass. Temperate pasture degradation is recognised as being a major contributor to the wider environmental problems of soil erosion, salinity and acidity. This evaluation related to a project (1996-2002) that focussed on the vulpia problem in the New South Wales temperate pasture areas. The benefits of that research were measured as the difference in the...
Tipo: Report Palavras-chave: Benefit cost analysis; Research evaluation; Annual grass weeds; Vulpia; Research and Development/Tech Change/Emerging Technologies; Q160.
Ano: 2004 URL: http://purl.umn.edu/42503
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Australian Sheep Industry CRC: Economic Evaluations of Scientific Research Programs AgEcon
Vere, David T.; Griffith, Garry R.; Silvester, Luke T..
By the end of its seven-year term in 2007-08, the Australian Sheep Industry CRC (Sheep CRC) will have received total funds of about $90 million, that comprises Commonwealth and industry funding of $30 million, and in-kind contributions valued at $60 million. This level of public and private funding emphasises the need for the Sheep CRC to demonstrate that its research programs will generate sound economic returns to all stakeholders. This paper reports an evaluation of the potential economic value of the achievements of the Sheep CRC at the midpoint of its term of operations at which it has some completed research and a large volume of research in progress. The main question that has been addressed in this evaluation concerns the nature and likely...
Tipo: Report Palavras-chave: Sheep research; Economic evaluations; Economic-surplus- benefit-cost analysis.; Agribusiness; Farm Management; Livestock Production/Industries; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q160.
Ano: 2005 URL: http://purl.umn.edu/42651
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Book Reviews AgEcon
Vere, David T..
Tipo: Journal Article
Ano: 1980 URL: http://purl.umn.edu/9346
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COMPARATIVE FORECAST ACCURACY IN THE NEW SOUTH WALES PRIME LAMB MARKET AgEcon
Vere, David T.; Griffith, Garry R..
The market for Australian prime lamb is characterised by high production seasonality and a highly competitive retail demand. Because these factors often translate into substantial market variability, regular forecasts of supply and demand are important requirements of lamb market participants. There has been some forecasting activity in the state and national lamb markets but it has been a somewhat controversial activity. This paper assesses the comparative forecast accuracy of a range of methods in the New South Wales lamb market. The results indicate that no single method is clearly superior in all situations and the greatest scope for improving forecast accuracy in the New South Wales lamb market is through the use of combined econometric and naive...
Tipo: Journal Article Palavras-chave: Demand and Price Analysis; Marketing.
Ano: 1990 URL: http://purl.umn.edu/22439
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Dynamic general equilibrium analysis of improved weed management in Australia's winter cropping systems AgEcon
Wittwer, Glyn; Vere, David T.; Jones, Randall E.; Griffith, Garry R..
A recent analysis indicated that the direct financial cost of weeds to Australia’s winter grain sectorwas approximately $A1.2bn in 1998–1999. Costs of thismagnitude represent a large recurring productivity loss in an agricultural sector that is sufficient to impact significantly on regional economies.Using amulti-regional dynamic computable general equilibrium model, we simulate the general equilibrium effects of a hypothetical successful campaign to reduce the economic costs of weeds. We assume that an additional $50m of R&D spread over five years is targeted at reducing the additional costs and reduced yields arising from weeds in various broadacre crops. Following this R&D effort, one-tenth of the losses arising from weeds is temporarily...
Tipo: Article Palavras-chave: CGE modelling; Dynamics; Weed management; Crop Production/Industries.
Ano: 2005 URL: http://purl.umn.edu/118584
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Economic benefits of public investment in weed management: the case of vulpia in south-eastern Australia’s temperate pasture areas AgEcon
Vere, David T.; Jones, Randall E.; Griffith, Garry R..
The present paper reports an economic evaluation of the long-term benefits to Australia of research by the Cooperative Research Centre for Weed Management Systems (CRC) into the improved management of vulpia , the major annual grass weed of temperate pastures in New South Wales and Victoria. Vulpia reduces livestock production by competition with more desirable pasture species, by the production of low quality feed at critical times of the grazing cycle, and by injury to animals. A 20-year stochastic benefit-cost analysis indicated that reducing the impacts of vulpia in these pastures produced a mean net present value of # A58.3 million and a mean benefit-cost ratio of 33:1. Temperate pasture zone wool producers would capture the largest shares of these...
Tipo: Journal Article Palavras-chave: Agricultural and Food Policy; Farm Management.
Ano: 2003 URL: http://purl.umn.edu/118162
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Forecasting in the Australian Lamb Industry: the Influence of Alternate Price Determination Processes AgEcon
Vere, David T.; Griffith, Garry R..
The purpose of this paper is to evaluate the influence of alternate price determination specifications on the ability of a structural econometric model of the Australian prime lamb industry to accurately forecast saleyard lamb prices. Five variations of this model were specified according to the manner in which the farm prices of lamb were assumed to be determined. and these were used to produce 12 quarterly dynamic price forecasts over 1991:1 to 1993:4. The results confirmed the importance of the assumed nature of the price determination process in influencing the model's solution and its subsequent ability to forecast farm prices. Based on the forecasts' mean squared errors, the preferred specification was one which incorporated a traditional market...
Tipo: Journal Article Palavras-chave: Demand and Price Analysis.
Ano: 1995 URL: http://purl.umn.edu/12384
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Integrating Econometric Models of Australia's Livestock Industries: Implications for Forecasting and Other Economic Analyses AgEcon
Vere, David T.; Griffith, Garry R..
The perceived value of integrating small partial- equilibrium structural models of individual livestock industries into a comprehensive single-sector model is to take advantage of the interrelationships that are usually expressed by cross elasticities on both the supply and demand sides of these industries. Model integration should provide a more realistic representation of the livestock industries and an improved mechanism for industry analyses. However, model integration could also lead to increased error in model simulation that could reduce the value of the larger model for those purposes. Using forecasting as an example application, this paper investigates how the increased endogenisation of cross-commodity relationships in alternative structural...
Tipo: Working or Discussion Paper Palavras-chave: Structural econometric models; Model integration; Forecasting; Economic analysis; Livestock Production/Industries.
Ano: 2003 URL: http://purl.umn.edu/12916
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Maintaining Sheep During Drought with Computer Formulated Rations AgEcon
Vere, David T..
The use of a linear programming model for the determination of least-cost feed mixes for the drought maintenance of dry adult sheep is reported in this paper. A ration is suggested whereby sheep can be fully maintained at an approximate cost of one cent per head per day, representing a considerable reduction in the cost of feeding by the currently recommended standards. The importance of including the mineral additives, salt, sulphur and calcium is stressed throughout.
Tipo: Journal Article Palavras-chave: Livestock Production/Industries.
Ano: 1972 URL: http://purl.umn.edu/9616
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Pasture Improvement Adoption In South-Eastern New South Wales AgEcon
Vere, David T.; Muir, A.M..
Pasture improvement is said to be the technology which has most influenced Australia's post-war agricultural production but little is known of the factors which have influenced the pasture adoption process. This paper describes an exploratory analysis of the determinants of pasture improvement adoption on the central and southern tablelands of New South Wales, one of Australia's foremost grazing areas. The objectives were to quantify the separate influences on pasture improvement adoption and to determine whether there has been change in the response to these influences over time. The results indicate that most of the variation in improved pasture levels since 1950 was explained by movements in farm prices and input costs. Other periodic influences were...
Tipo: Journal Article Palavras-chave: Farm Management.
Ano: 1986 URL: http://purl.umn.edu/12421
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Research and Extension Capabilities: Program Economists in New South Wales Agriculture AgEcon
Mullen, John D.; Vere, David T..
In 1997 the economists in NSW Agriculture conducting applied economics research at its larger research stations were assigned to the Department'’s major programs of the Department. This report reviews some of their achievements since that time. The report begins with a section describing the role of Program Economists and their management. Then follows a brief review of the main areas of interest of each of the twelve economists. A large section of the report is devoted to outlining major areas of research and extension where program economists, often working cooperatively, have made a significant contribution. These areas include: • Analyses of market conditions for agricultural products; • Field crop economics; • Grazing and pasture economics; •...
Tipo: Report Palavras-chave: Research and Development/Tech Change/Emerging Technologies; Teaching/Communication/Extension/Profession.
Ano: 2003 URL: http://purl.umn.edu/28013
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Research Into Conservation Tillage for Dryland Cropping in Australia and China AgEcon
Vere, David T..
Tipo: Report Palavras-chave: Crop Production/Industries.
Ano: 2005 URL: http://purl.umn.edu/113217
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Sheep CRC Renewal Proposal: Economic Evaluation of the Proposed Scientific Themes AgEcon
Griffith, Garry R.; Vere, David T.; Jones, Randall E..
The Australian sheep industry and its associated research and development agencies have developed a proposal for the CRC for Sheep Industry Innovation. “Top-down” and “bottomup” procedures were used to assess the expected economic benefits from this proposal. Formal “with-CRC” and “without-CRC” scenarios were defined for each product and each research theme. Relevant costs were similarly defined. The requested investment by the Commonwealth and the Australian sheep industry in the CRC is assessed relative to a scenario where an alternative, lower cost research program into this industry is implemented. These extra resources have a discounted value of about $34 million over the 25-year period of this evaluation. These resources are sufficient to allow some...
Tipo: Report Palavras-chave: Wool; Sheep meat; Research and development; Economic; Evaluation; Australia; Agribusiness; Livestock Production/Industries; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q160.
Ano: 2006 URL: http://purl.umn.edu/42656
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Social Benefits of Serrated Tussock Control in New South Wales AgEcon
Vere, David T.; Sinden, Jack A.; Campbell, M.H..
Weeds are responsible for extensive annual losses of agricultural production although convincing estimates of such loss are largely unavailable, particularly in Australia. Recognition of the economic cost of weeds is important for a number of reasons which include the rationalization of weed control programmes and the direction of weeds research. Because of data deficiencies relating to extent and distribution, impact on production and the environment, and the spread potential of individual weed species, this area of weeds research has to date received little attention. In this paper, the concepts of economic surplus are utilized in a general social benefit framework to assess the economic importance of serrated tussock (Nassella trichotoma), the major...
Tipo: Journal Article Palavras-chave: Crop Production/Industries.
Ano: 1980 URL: http://purl.umn.edu/9609
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Supply and Demand Interactions in the New South Wales Prime Lamb Market AgEcon
Vere, David T.; Griffith, Garry R..
Prime lamb has not received the same level of economic research as Australia's other major livestock markets and knowledge of the lamb market's operations remains relatively limited. This market has experienced increasing problems including highly variable saleyard prices, strong retail competition and calls for market reform. To date, there has been no quantitative mechanism for assessing the potential impacts of these issues on the state or national lamb markets. This paper reports the development of a quarterly econometric model of the New South Wales prime lamb market. The model considers prime lamb as a separate market entity and places emphasis on the demographic influences on supply response. The estimated model is validated under historical dynamic...
Tipo: Journal Article Palavras-chave: Demand and Price Analysis.
Ano: 1988 URL: http://purl.umn.edu/12266
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