7. The case is quite different in most dryland areas in developing countries. Except perhaps for the richest, producers are not organised nor politically powerful and have few if any links with researchers; the range of transformation processes occurs largely within the domestic domain using local technologies; wholesalers and retailers operate in fragmented and often non-competitive arenas in which the overall level of sales is depressed and quality carries no premium, and, consumers have weak purchasing power and few if any organized channels for expressing their preferences. If the inherent yield potential of many dryland areas is judged to be low, with scant chance that the value of the marketed uutput will ever pay for or induce the kind of infrastructural developments witnessed in irrigated environments, then, presumably, it will be necessary to preserve a continuing capacity to derive benefits frum the goods and services presently obtained from the biomass through transformation within the local community and the household economy. The challenge becomes that of raising capacity without displacing too many of the benefits presently obtained from within the micro-economy rather than in raising capacity by concentrating on only a few benefits (higher yield) and externalising the provision of the rest. Varietal characteristics must continue to an (unknown) extent to meet the demands of domestic transformation processes, technologies and end uses. The following example describes just such a situation. The local vegetables (fruits not included here for the sake of simplicity) produced on one farm (February 1980) at Sambwa in Mpika