Publications
118 results found
THIRTLE C, 1989, APPLIED PRODUCTION ANALYSIS - A DUAL APPROACH - CHAMBERS,RG, JOURNAL OF AGRICULTURAL ECONOMICS, Vol: 40, Pages: 400-401, ISSN: 0021-857X
THIRTLE C, BOTTOMLEY P, 1989, THE RATE OF RETURN TO PUBLIC-SECTOR AGRICULTURAL R-AND-D IN THE UK, 1965-80, APPLIED ECONOMICS, Vol: 21, Pages: 1063-1086, ISSN: 0003-6846
- Author Web Link
- Cite
- Citations: 26
CHERN WS, DEJANVRY A, KOPPEL B, et al., 1988, INDUCED INNOVATION THEORY AND AGRICULTURAL-DEVELOPMENT IN LDCS, AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS, Vol: 70, Pages: 1182-1183, ISSN: 0002-9092
Thirtle C, 1988, The management of technological change: An annotated bibliography : D. Hurley, (Intermediate Technology Publications Ltd., 1987) pp. 113, [UK pound]8.95, Vol: 17, Pages: 313-314
THIRTLE C, 1988, THE MANAGEMENT OF TECHNOLOGICAL-CHANGE - AN ANNOTATED-BIBLIOGRAPHY - HURLEY,D, RESEARCH POLICY, Vol: 17, Pages: 313-314, ISSN: 0048-7333
THIRTLE C, 1988, IS PUBLICLY FUNDED AGRICULTURAL-RESEARCH EXCESSIVE - A REPLY, JOURNAL OF AGRICULTURAL ECONOMICS, Vol: 39, Pages: 456-458, ISSN: 0021-857X
- Author Web Link
- Cite
- Citations: 2
THIRTLE C, BOTTOMLEY P, 1988, IS PUBLICLY FUNDED AGRICULTURAL-RESEARCH EXCESSIVE, JOURNAL OF AGRICULTURAL ECONOMICS, Vol: 39, Pages: 99-111, ISSN: 0021-857X
- Author Web Link
- Cite
- Citations: 20
THIRTLE CG, 1987, POPULATION, TECHNOLOGY AND DEVELOPMENT - MAITRA,P, MANCHESTER SCHOOL OF ECONOMIC AND SOCIAL STUDIES, Vol: 55, Pages: 216-218, ISSN: 0025-2034
THIRTLE CG, 1987, THEORY OF POPULATION AND ECONOMIC-GROWTH - SIMON,JL, MANCHESTER SCHOOL OF ECONOMIC AND SOCIAL STUDIES, Vol: 55, Pages: 216-218, ISSN: 0025-2034
Colin Thirtle, Vernon Ruttan, 1987, The Role of Demand and Supply in the Generation and Diffusion of Technical Change, Chur,Switzerland, Publisher: Harwooe Academic Publishers, ISBN: 9783718603848
THIRTLE CG, 1985, ACCOUNTING FOR INCREASING LAND-LABOR RATIOS IN DEVELOPED COUNTRY AGRICULTURE, JOURNAL OF AGRICULTURAL ECONOMICS, Vol: 36, Pages: 161-169, ISSN: 0021-857X
- Author Web Link
- Cite
- Citations: 7
THIRTLE C, 1985, FARMERS OF 5 CONTINENTS - PAARLBERG,D, JOURNAL OF AGRICULTURAL ECONOMICS, Vol: 36, Pages: 129-130, ISSN: 0021-857X
THIRTLE CG, 1985, INDUCED INNOVATION IN UNITED-STATES FIELD CROPS, 1939-78, JOURNAL OF AGRICULTURAL ECONOMICS, Vol: 36, Pages: 1-14, ISSN: 0021-857X
- Author Web Link
- Cite
- Citations: 9
THIRTLE CG, 1985, THE MICROECONOMIC APPROACH TO INDUCED INNOVATION - A REFORMULATION OF THE HAYAMI AND RUTTAN MODEL, MANCHESTER SCHOOL OF ECONOMIC AND SOCIAL STUDIES, Vol: 53, Pages: 263-279, ISSN: 0025-2034
- Author Web Link
- Cite
- Citations: 4
Thirtle, If the article you are looking for is not listed here please try Google Academic search or ask by email.
E Kaliakatsou, C Thirtle, The Impact of Low Level Ozone Pollution on Trial Plot Winter Wheat Yields in Great Britain, Agricultural Economics Society
Thirtle, Past conference presentations (160) and published conference papers (19)are availbale on request.
Townsend RF, Thirtle CG, Production Incentives for Small Scale Farmers in Zimbabwe: The Case of Cotton and Maize, Vol: 36
The paper presents an empirical investigation of the production response of small scale producers of maize and cotton for communal agriculture in Zimbabwe. The error correction model, which employs the concept of cointegration to avoid spurious regressions, is used in the analysis. The factors affecting maize output were the price of maize relative to seed, the number of marketing depots established in the communal areas and the number of loans provided to these farmers. The factors affecting cotton output were the increase in communal lands due to the resettlement program, the number of loans extended to small scale farmers and the price of cotton relative to seed. The weather played the most significant role in determining the quantity of maize sold.
Nyariki DM, Thirtle CG, Technical innovation and farm productivity growth in dryland Africa: The effects of structural adjustment on smallholders in Kenya, Vol: 39
This paper uses non-parametric approach to measure technical innovation and productivity growth at the smallholder farm-level in dry-land sub-Saharan Africa during the initial years of the structural adjustment programmes for agriculture. Data from Kenya for two production years, 1991/2 and 1995/6 are used to construct a Malmquist productivity index. The results show that the rise in input prices led to reduced use of modern inputs, so that efficiency increased at 12% per year. However, lower use of modern varieties and less fertiliser also gave technological regression at 2.5% per annum, so that the overall outcome was productivity growth of 3% per annum. However, productivity improvement cannot be sustainable without technological progress.
Thirtle CG, Piesse J, Gouse M, Agricultural technology, productivity and employment: Policies for poverty reduction, Vol: 44
This paper begins by arguing that agricultural economics has an important contribution to make to the economic transition of the new democratic South Africa. Policies are required to reduce unemployment, poverty and inequality, but does the work of agricultural economists provide the policy makers with the information necessary to make the correct choices? In this context, we update our recent work on technology, efficiency and productivity in South African agriculture, for both the commercial and smallholder sub-sectors. For the commercial sector, this means extending the total factor productivity index and estimates of the demand for labour. For the smallholder sector, there are new results on the impacts of GM cotton and white maize on output and employment. However, this piecemeal approach treats the two sectors as entirely separate, when they are actually interdependent. Thus, a Ricardian model of dualistic agriculture is used to explain the historical development of dualism in agriculture, especially how the native agriculturalists were impoverished by the colonists. Then this model is adapted to resemble the Harris-Todaro model of urban unemployment is order to represent the present dual agricultural sector. This allows the current policy options to be compared, although real data is needed to estimate the relationships and so the full analysis remains incomplete.
Townsend RF, van Zyl J, Thirtle CG, Machinery and labour biases of technical change in South African agriculture: A cost function approach, Vol: 36
This paper provides an empirical investigation into the long-standing notion of biases of technical change in South African agriculture. The second order cost function is used to derive relative bias measures between labour and machinery. The results suggest that large machinery-using biases in technology have been developed with minimal labour-using biases.
Townsend RF, van Zyl J, Thirtle CG, Assessing the benefits of research expenditures on maize production in South Africa, Vol: 36
This paper focuses on assessing the benefits of research expenditures on maize production in South Africa. Both the production and supply function approaches are used to calculate elasticities of research expenditure on output and yield. Cointegration is used to establish long-run relationships between variables in these models. The lag structure of R&D expenditures on output is examined making use of the unrestricted, polynomial, beta and gamma distributions. The coefficients of these lag distributions were then used to calculate a rate of return to maize research expenditure, which was estimated as being between 28% and 39% per annum. These rates of return are high, mitigating in favour of more research expenditure rather than less.
Muchena M, Piesse J, Thirtle CG, et al., HERD SIZE AND EFFICIENCY ON MIXED CROP AND LIVESTOCK FARMS: CASE STUDIES OF CHIWESHE AND GOKWE, ZIMBABWE, Vol: 36
This study is based on two 1991 sample surveys, each of ninety farms, in the predominantly arable region of Chiweshe and in the low rainfall area of Gokwe, where animals are more important. The two samples are reasonably representative of the range of conditions found in the communal areas in Zimbabwe. Programming techniques are used to determine the efficiency levels of the farms in each region. The results show that efficiency is positively related to the numbers of both cows and oxen, with only a few farms in Gokwe possibly having too many animals. Farms in Gokwe are on average about two thirds as efficient as those in Chiweshe, which is a measure of the effects of the poorer climate and soils. Non-farm income is also lower, due to lesser opportunities in the more remote region. In both regions, the majority of farms are too small and the estimates suggest that increasing farm size could almost double productivity.
Thirtle CG, Townsend RF, Amadi J, et al., THE RATE OF RETURN ON EXPENDITURES OF THE SOUTH AFRICAN AGRICULTURAL RESEARCH COUNCIL (ARC), Vol: 37
All the rate of return estimates, regardless of methodology or the level of aggregation, are entirely consistent and logical. The returns show that the ARC has been extremely successful economically and has followed a sound strategy of exploiting spillovers from foreign R&D systems. However, there must be a strong socio-economic component to the ARC's efforts if it is to reach the disadvantaged.
Thirtle CG, TECHNOLOGICAL CHANGE AND THE PRODUCTIVITY SLOWDOWN IN FIELD CROPS: UNITED STATES, 1939-78, Vol: 17
In the past four decades, productivity in United States field crops has been transformed by the mechanical and fertilizer revolutions. Since input data are typically not available by crop, most investigators of productivity have been at the aggregate level. This paper developps a simultaneous equation, partial adjustment model of the demand of inputs, which generates estimates of the technical change parameters for wheat, corn, soybeans, and cotton. These estimates allow comparisons of the factor saving biases in technical change, leading to a novel test of the induced innovation hypothesis and the suggestion that the productivity slowdown may yet affect agriculture in the United States.
van Zyl J, Thirtle CG, THE RELATIONSHIP BETWEEN FARM SIZE AND THE TECHNICAL INEFFICIENCY OF PRODUCTION OF WHEAT FARMERS IN THE EASTERN FREE STATE, Vol: 37
Some comments are required to put in perspective the results obtained by Ngwenya, Battese and Fleming (1997). In particular, it is necessary to examine their main conclusion that in 1988/89 there was a significant inverse relationship between the technical inefficiency of wheat farmers in the Eastern Free State and farm size, because this is in direct contrast with the findings of Van Zyl, Binswanger and Thirtle (1995) who used the same dataset.
This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.