This paper describes a research program from Tanzania to search for ways of improving soil moisture for dry land agriculture in semi-arid areas. Surveys of farmers have shown that farmers rank shortage of soil moisture as the most important limitation to crop production in these areas. This has been proved by the significant yield increases observed in cropped fields when extra water is supplied through RWH. However, improving soil moisture without paying attention to soil fertility will lead to low water-use efficiency by crops.
Hatibu, N.; Mahoo, H.F.; Senkondo, E.M.; Simalenga, T.E.; Kayombo, B.; Ussiri, D. Strategies for soil-water management for dryland crop production in Tanzania. In: Soil Fertility and Climatic Constraints in Dryland Agriculture, Proceedings of ACIAR / SACCAR Workshop. (1993) 32-38.