Participatory varietal selection (PVS) and participatory plant breeding (PPB) are relatively new terms that encompass both old and new concepts and procedures. The difference between PVS and PPB hinges on the degree and timing of farmer involvement in plant breeding. To illustrate the essential...

The dynamic consequences of machine threshing in the Semi-Arid Tropics (SAT) of Peninsular India are evaluated. Limited diffusion of threshers in the SAT of the country. Cost savings and profitability of mechanical threshing. The marked decrease in labour hiring for threshing between 1975/76 and...