In Burundi, the agricultural system that predominates is a mixed system dominated by food crops integrating an extensive livestock system, micro-afforestations and cash crops. The semi-intensive system characterized by agro-sylvo-zootechnical integration can already be observed in some corners of the country. Food crops occupy about 1210,000 ha, or about 43.4% of the national area, while cash crops occupy 104,000 ha, or 3.7% of the entire national territory. They are mainly dominated by bananas, tuber plants, legumes and cereals. Fruit crops are dominated by avocados, mangoes, papaya and lemon trees. Vegetable crops include cabbages, eggplants, onions, tomatoes, etc. Industrial crops are dominated by coffee, tea, cotton, palm oil, oil palm, sugar cane, and tobacco. Cultivated marshes include approximately 81403 ha, or 2.9% of the country's surface area (MINAGRIE, 2008). Cultivated fodder species, including more than 21 inventoried species, consist of grasses and herbaceous and shrubby legumes...