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| Registros recuperados: 16 | |
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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| 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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| Registros recuperados: 16 | |
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