ASSESSING THE BENEFITS OF RESEARCH EXPENDITURES ON MAIZE PRODUCTION IN SOUTH AFRICA / RAMING VAN DIE VOORDELE VAN NAVORSINGSBESTEDINGS OP MIELIEPRODUKSIE IN SUID-AFRIKA

REFERENCES

• Akgungor , S. , Makanda , D. , Oehmke , J. , Myers , R. and Choe , Y. 1996 . “ A dynamic analysis of Kenyan wheat research and rate of return ” . In Conference Proceedings, Contributed Papers, published by the Conference Secretariat of the Global Agricultural Science Policy for the Twenty-first Century 1 – 31 . Melbourne, , Australia In, August
   Google Scholar
• Alston , J. , Craig , B. and Pardey , P. 1996 . “ Research lags and research returns, pp.333–366 ” . In Conference Proceedings, Invited Papers, published by the Conference Secretariat of the Global Agricultural Science Policy for the Twenty-first Century Melbourne, , Australia August 1996
   Google Scholar
• Andrews , D. W. and Fair , R. C. 1992 . Estimation of polynomial distributed lags and leads with end point constraints . Journal of Econometrics , 53 : 123 – 139 .
   Web of Science ®Google Scholar
• Brand , S. , Christodoulou , N. , Van Rooyen , C. J. and Vink , N. 1992 . “ Agriculture and redistribution. ” . In Wealth or poverty? Critical choices for South Africa Edited by: Schrire , R. Cape Town : Oxford University Press .
   Google Scholar
• Chembezi , D. 1991 . Acreage response to price and risk: The case of tobacco in Malawi . European Review of Agricultural Economics , 18 : 85 – 102 .
   Google Scholar
• Doyle , C. J. and Ridout , M. S. 1985 . The impact of scientific research on UK agricultural productivity . Research Policy , 14 : 251 – 276 .
   Web of Science ®Google Scholar
• Dickey , D. A. and Fuller , W. A. 1981 . Likelihood ratio statistics for autoregressive time series with unit roots . Econometrica , 49 : 1057 – 72 .
   Web of Science ®Google Scholar
• Echeverria , R. G. 1990 . “ (ed) ” . In Methods for diagnosing research system constraints and assessing the impact of agricultural research Vol. 2 , Vol. The Hague: ISNAR
   Google Scholar
• Evenson , R. E. 1967 . The contribution of agricultural research to production . Journal of Farm Economics , 49 ( 5 ) : 1415 – 25 .
   Web of Science ®Google Scholar
• Gallagher , P. 1978 . The effectiveness of price support policies—some evidence for US corn acreage response . Agricultural Economics Research , 30 ( 4 ) : 8 – 12 .
   Google Scholar
• Griliches , Z. 1958 . Research costs and social returns: Hybrid corn and related innovations . Journal of Political Economy , 66 : 419 – 31 .
   Web of Science ®Google Scholar
• Hallam , D. 1990 . Agricultural research expenditures and agricultural productivity change . Journal of Agricultural Economics , 41 : 434 – 9 .
   Web of Science ®Google Scholar
• Hatanaka , M. and Wallace , T. D. 1980 . “ Multicollinearity and the estimation of low-order moments in stable lag distributions. ” . In Evaluation of econometric models Edited by: Kmenta , J. and Ramsey , J. B. New York : Academic Press .
   Google Scholar
• Just , R. E. 1974 . An investigation of risk in farmers decisions . American Journal of Agricultural Economics , 56 : 14 – 25 .
   Web of Science ®Google Scholar
• Khatri , Y. J. 1994 . Technical change and the returns to research in UK agriculture 1953–1990 Unpublished PhD thesis, University of Reading
   Google Scholar
• Kirsten , J. and Van Zyl , J. 1996 . “ The contemporary agricultural policy environment: undoing the legacy of the past. ” . In Agricultural land reform in South Africa Edited by: van Zyl , J. , Kirsten , J. and Binswanger , H. P. Cape Town : Oxford University Press .
   Google Scholar
• Knutson , M. and Tweeten , L. G. 1979 . Towards an optimal rate of growth in agricultural production research and extension . American Journal of Agricultural Economics , 61 : 70 – 6 .
   Web of Science ®Google Scholar
• Republic of South Africa . 1972 . “ 1996). ” . In Abstract of agricultural statistics Pretoria : Directorate of Agricultural Economic Trends, Department of Agriculture and Water Supply . Government Printer
   Google Scholar
• Ryan , J. J. 1974 . Supply response to risk: The case of US pinto beans . Journal of Agricultural Economics , 2 : 35 – 43 .
   Google Scholar
• Thirtle , C. and Bottomley , P. 1988 . Is publicly funded agricultural research excessive? . Journal of Agricultural Economics , 39 : 99 – 111 .
   Web of Science ®Google Scholar
• Thirtle , C. and Bottomley , P. 1989 . The rate of return to public sector R&D in the United Kingdom, 1965–1980 . Applied Economics , 21 : 1063 – 1086 .
   Web of Science ®Google Scholar
• Traill , B. 1978 . Risk variables in econometric supply models . Journal of Agricultural Economics , 29 : 53 – 61 .
   Web of Science ®Google Scholar
• Van Zyl , J. and Sartorius Von Bach , H. J. 1994 . Statistical brief on the National Agricultural Research System of South Africa Statistical Brief, ISNAR Indicator Series Project: Phase II
   Google Scholar
• Van Zyl , J. and Nel , H. J.G. 1988 . The role of the maize industry in the South African Economy . Agrekon , 27 ( 3 ) : 10 – 16 .
   Google Scholar