BIOLOGICAL CONSIDERATIONS IN THE UTILIZATION OF <em>RACOSPERMA</em> <em>AURICULIFORME</em> AND <em>RACOSPERMA</em> <em>MANGIUM</em> IN TROPICAL COUNTRIES WITH EMPHASIS ON ZAIRE

Abstract

Racosperma auriculiforme (Acacia auriculiformis) and R. mangium (A. mangium), two fast-growing species belonging to the Leguminosae family, have been introduced into Zaire for industrial fuelwood plantations as well as for social agroforestry purposes. We report here on our current knowledge on the biological considerations in the utilization of both species in tropical countries with emphasis on Zaire. The taxonomy and ecology, reproductive biology and breeding systems,, genetic diversity, biolic interactions, silviculture and present uses of these species arc examined. Because these species will play a major role in reforestation programmes for the next decades in developing countries such as Zaire, the necessity for the genetic improvement of these species as well as adaptability, site trials and silvicultnral requirements are discussed in relation to the increase of plantation productivity.