Amaranthus

Intermediaries between the plain and the western part of the high altitiudes region. Altitude: 1000-1750 m, land with steep slopes and valleys strongly collected under fome of V. Traversnés of many rivers originating from the ridge and flowing into Lake Tanganyika. Soils: ferrisols, hygroxéroferrasols, lithosols, bedrock hygroxéferrisols quartzite fertile black earth. Rainfall: 1400-1600 mm / year Temperature: 20-25 ° C. 3-4 months of dry season (July-September).

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).

Located around the Congo-Nile between cotgreforts of Mumirwa and the central highlands. Altitude: 1750-2600 m, vegetation mountain ranges of eragostris constituted by the Congo-Nile. Sources of many rivers in the Congo Basin in the western part and the Nile Basin in the eastern part. Soils: Hygroxéroferrasols, hygroxéferrisols and leached average fertility. Pluviomotrie: 1800-2000 mm / year Temperature: 15-19 ° C. 2 to 3 months of dry season (July-September).

central region extending from North to South of the country between the high mountains and depressions of the East. Altitude: 1400-1800 m, steep terrain with many swamps. Regions crossed by a dense source taking hydrological network in the high mountains of the Congo to the south basin and the Nile Basin in the north. Soil mixture of hygroxéroferralsols and hygroferrisols very poor red earth. Rainfall: 1100-1400 mm / year Temperature: 18-21 ° C / year. 3 to 4 months of dry season (July-September).