Okra

border regions of Rwanda to the north and Tanzania to the east in the form of bowls. Altitude: 1300-1700 m, steep terrain with a large marsh system dominated by papyrus reeds in the north and east. very low water network regions of the Nile Basin to the north and the Congo Basin to the east. Soil mixture of hygroxéroferralsols and hygroxéroferrisols developed on granitic rock and gneiss in the North East low fertiliité and rock shale and dolomitic limestones in the east and medium fertility. Rainfall: 1000-1100 mm / year in the north and 500-1000 mm / year in the East Temperature: 20-21 ° C in the north and 20-25 C in the east. 4 to 6 months of dry season (May / June to October).

Located north-south-west. Elevation: 750-1000 m, vegetation dominated by savannas heurbeuses, gently undulating terrain. Crossed by many rivers originating from the ridge and flowing into Lake Tanganyika part of the Congo River basin. Soil mixtures vertisols of régogley, of hygroxéroferrisols and fertile hygroferralsols black-brown earth. Rainfall: 500 -1000 mm / year. Temperature: 20-30 ° C / year. 4 to 5 months of dry season (June-September).