Technical note:: Hybrid corn: Its adoption revisited

The analysis presented is for the adoption of hybrid corn. Among the three functional relationships that are tried the log logistic performs best in terms of explanation (R²) and serial correlation before adjusting for it. After adjusting for the serial correlation using the Cochrane Orcutt procedure the differences between the three functional forms practically vanish. The adoption parameter of the log logistic is best explained by economic variables among which the total area of corn in the state, which stands for both the importance in the economy and economies of scale of extension services, is outstanding.