“…They grow preferably in Guinéo-Congolaise region of African dense humid forests [3,25,26]. E. cylindricum settled from dense forests onto fallows is requireless, prefers versant and plateau soils with pH atypically high, dry well drained, with the rainfall ranged between 1200 and 2500mm and the average temperature from 15 to 32°C [17,25]. Meanwhile, Pericopsis elata is nitrogen fixing legume, characteristic of fertile soils, atypically acid, clayey, with weak exchangeable aluminum content, rich in magnesium and available phosphorus.…”