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South African agricultural competitiveness : a profit function approach to the effects of policies and technology

Khatri, Yougesh; Thirtle, Colin; Zyl, Johan van - 1995

Persistent link: https://www.econbiz.de/10000151562

Effects of the 1992 drought on productivity in the South African homelands : an application of the Malmquist index

Piesse, Jenifer; Thirtle, Colin; Zyl, Johan van - 1995

Persistent link: https://www.econbiz.de/10000565622

An Analysis of Alternative Maize Marketing Policies in South Africa

Jayne, T.S.; Hajek, Milan; Zyl, Johan van - Department of Agricultural, Food and Resource … - 1995

Persistent link: https://www.econbiz.de/10011251968

South African agriculture in transition: the 1990s

Zyl, Johan van; Vink, Nick; Kirsten, Johann; Poonyth, … - In: Journal of International Development 13 (2001) 6, pp. 725-739

No abstract

Persistent link: https://www.econbiz.de/10005200142

Short and long-run returns to agricultural R&D in South Africa, or will the real rate of return please stand up?

Schimmelpfennig, David; Thirtle, Colin; Zyl, Johan van; … - In: Agricultural Economics of Agricultural Economists 23 (2000) 1

This paper briefly presents the results of a total factor productivity (TFP) study of South African commercial agriculture, for 1947-1997, and illustrates some potential pitfalls in rate of return to research (ROR) calculations. The lag between R&D and TFP is analyzed and found to be only 9...

Persistent link: https://www.econbiz.de/10011069255