Maredia, Mywish K.; Ward, Richard; Byerlee, Derek - In: Agricultural Economics of Agricultural Economists 14 (1996) 3
An econometric approach using international and national yield trial data is employed to estimate a spillover matrix for wheat varietal technology. The global spillover matrix is estimated based on international yield trial data from 1979-80 to 1987-88, that include 195 international trial...