Please allow an additional comment to my previous one. That is I tend to get upset with the term illiterate and the implication that it means uninteligent as applied to smallholder farmers. Please note that literacy requires inteligence, opportunity and motivation to take advantage of the opportunity. Remove the opportunity does not mean lost of inherent inteligency. Thus the result is there are many poorly educated but reasonable inteligent smallholder farmers, who are actually fairly skilled practitioners in the art of farming, and can quickly sort out what is and is not in their best interest. They are quite capable of sorting out fertilizer rates best suited to thier land and the decline production function as crop establishment is delayed.
Thank you
Dr. Dick Tinsley