In 1961 fertilized grass-legume pastures were introduced into Uruguay.  This shows the total number of ranchers who adopted this new technology (second column) from 1965 to 1976 (first column with 0 corresponding to 1965).

  Data from "Predicting the Diffusion of Improved Pastures in Uruguay" by L. S. Jarvis, American Journal of Agricultural Economics, Volume 63, 1981, 495-502.