A STUDY ON NATURAL RESOURCES OF NODULATING TREE LEGUMES AND STRAINS OF RHIZOBIA RECENT ADVANCES IN SYMBIOTIC NITROGEN FIXATION OF TREE LEGUMES SEASONAL AND DIURNAL VARIATION IN LEAF SESQUITERPENES OF GREENHOUSE-GROW SAPLINGS OF HYMENAEA AND COPAIFERA Responses of Tree Legumes to Rhizobial Reinoculation