Based on surveys in 1957 and 1960 in six Georgia counties, this study evaluated an intensive educational program by the University of Georgia, and investigated attitudes and other factors related to farmers' use of fertilizers. Respondents were ranked by amounts of plant nutrients applied per acre in 1957 and by fertility per farm. Findings included the following; (1) Low adopters tended to be older, with longer experience, less knowledge of simple fertilizer facts, less farm income, smaller farms, less awareness of the special program, and a more limited reference group; (2) major changes in fertilizer practices lay in fertilizer knowledge, soil testing, increased crop yields, analysis of basic fertilizer, and increases in plant nutrients used per acre; (3) the high group held more realistic beliefs and values about lime and fertilizer, but the low group had a more resilient attitude toward making changes; (4) all groups named the county agent as their main information source, and identified the demonstration method as best for teaching farmers about new practices. (author/ly)