This paper examines those factors influencing the uptake and impact of renewable natural resource's research giving particular attention to the identification of promotion pathways, dissemination and adoption of soil and water conservation technologies suitable for small farmers in semi-arid parts of Zimbabwe. Problems faced by communal area farmers in these areas cannot be solved by simply adaption and introduction of already existing technologies. Apart from technologies for maize and cotton successfully developed for high potential areas, technology does not exist or inappropriate as it is perceived as too risky by farmers. To make research more effective more attention needs to be given to project identification, design and appraisal with active involmentand consultation with intended beneficiries and stakeholders usingmore participatory methods that consider socio-economic acceptability and identify dissemination pathways

The paper outlines the occurence and distribution of vleis in Zimbabwe. Historical and Current utilization practices of these vleis are briefly described. Potentially safe and productive systems of cultivating vleis were investigated. These included three tillage practices (ridge and furrow, flat and paddy) and three cropping patterns (monocropping, intercropping and sequential cropping). Results of crop performance are discussed for the period 1983 to 1994. During the years when both maize and rice were harvested (1984/85, 1985/86, 1987/88, 1989/90, 1992/93 and 1993/94) maize grain yield averaged 6219 kg/ha whilst that of the rice was 2129 kkg/ha. Maize yielded grain every season even those with below average rainfall. In 1991/92 seasons when Zimbabwe and indeed the sub-Saharan region experienced the worst drought in history, vlei maize on ridges averaged grain yield of 1139 g/ha. Soil fertility, ground water levels and precipitation were monitored throughout the experimental period. Implications of vlei cultivation on the socio-economic aspects were assessed in view of possible transfer. Future research and extension objectives and strategies are highlighted. The need for coordinated and multi-displinary approach on the development of vlei utilization packkages is emphasized