Soil fertility parameters were compared under six tree species in a 2.5 - year - old experimental plantation ... humid tropics for promoting land - use sys- tems which can contribute to supplying the demands for timber , fuelwood , and ...

Impacts of Native Trees on Tropical Soils : A Study in the Atlantic Lowlands of Costa Rica The influence of trees on soil ... exhibited growth rates similar to or above those reported for the species which are recommended for the region ...