(a) The need for irrigation | Irrigation Agriculture in Nile Basin | Irrigation in Niger Basin |
| (i) To supply moisture to soil(ii) To fight drought(iii) To improve the environment where plants grow | (i) To grow crops, i.e large scale agriculture |
| (b) Methods used | (i) Basin or flooding method(ii) Perennial method(iii) The shaduf method | (i) Mainly the sprinkler method |
| (c) Areas covered | Mainly areas along the Nile of Egypt and Sudan | Mali, Sokoto (Nigeria), middle belt of Nigeria |
| (d) Crops cultivated | Cotton, rice, sugarcane, wheat millet, groundnut | Groundnut, rice, tobacco, cotton, sugarcane |
