The Possibility of a Rice Green Revolution in Large-scale Irrigation Schemes in Sub-Saharan Africa

Nakano, Yuko ; Bamba, Ibrahim ; Diagne, Aliou ; Otsuka, Keijiro ; Kajisa, Kei

关键词: ACCESS TO IRRIGATION;    ACCESS TO WATER;    AGRICULTURAL DEVELOPMENT;    AGRICULTURAL WATER;    AGRONOMY;   

DOI  :  10.1596/1813-9450-5560
RP-ID  :  WPS5560

学科分类：社会科学、人文和艺术（综合）

来源: World Bank Open Knowledge Repository

【 摘 要 】

This paper investigates the potential ofand constraints to a rice Green Revolution in Sub-SaharanAfrica's large-scale irrigation schemes, using datafrom Uganda, Mozambique, Burkina Faso, Mali, Niger, andSenegal. The authors find that adequate irrigation, chemicalfertilizer, and labor inputs are the key to highproductivity. Chemical fertilizer is expensive in Uganda andMozambique and is barely used. This is aggravated when wateraccess is limited because of the complementarities betweenfertilizer and irrigation. Meanwhile, in the schemes locatedin four countries in West Africa's Sahel region, wherewater access is generally good and institutional support forchemical fertilizer exists, rice farmers achieve attractiveyields. Some countries' wage rate is high and thusmechanization could be one solution for this constraint.Improvement of credit access also facilitates the purchaseof expensive fertilizer or the employment of hired labor.