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...

The purchase of commercial farm land in Zimbabwe for resettlement has been a factor in government policy since independence in 1980, but from l 980 to 1989 only 52 000 families were relocated. The Land Acquisition Bill of 1992 made compulsory purchase easier and at present the government has...

This paper exploits the properties of the third order approximation of the translog cosl function lo estimate the input demand elasticities and factor-saving biases of technological change for UK agriculture. Then, cointegration techniques are used to determine the time series properties of the...