Geographic Distribution of Indigenous Rice-Cultivation Techniques and Their Expansion in Tanzania
Trop. Agr. Develop. 63(1):18 - 26,2019 Geographic Distribution of Indigenous Rice-cultivation Techniques and Their Expansion in Tanzania Futoshi KATO* College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan Abstract In Tanzania, indigenous rice-cultivation productivity is generally lower than that of rice cultivation using modern irrigation systems, even though it is a nationwide practice. Practical improvements in indigenous rice cultivation are required to increase the productivity, stability, and sustainability of rice cultivation. Tanzania is a major rice-producing country in Africa and the demand for rice is continuously increasing; therefore, indigenous rice cultivation has also increased for more than 20 years. This study was focused on indigenous rice cultivation and aimed at elucidating the geographic distribution of indigenous rice cultivation and characterizing the techniques used. Fieldwork was conducted in Mwanza, Shinyanga, Tabora, Mbeya, Dodoma, Rukwa, Morogoro, and Dar es Salaam, which are the major rice-producing areas in Tanzania. Two basic rice-cultivation techniques are used in that country; one utilizes runoff from rainfall and the other uses floodwater from streams, rivers, and swamps. The former is practiced in northern and western Tanzania and is characterized by transplanting, building levees, and plowing with bullocks, while the latter is practiced in south-central Tanzania and is characterized by broadcasting seed, irrigating with floodwater, and using tractors. Furthermore, rice cultivation that utilizes runoff expanded from northern to southern regions of Tanzania in parallel with the migration of the Sukuma people; this has increased the diversification of Tanzanian rice cultivation. These indigenous rice-cultivation techniques were found to be affected by geographical, meteorological, and social conditions.
[Show full text]