Agroforestry systems in the SarapiquõÂ region of
Costa Rica, compared with pasture, had generally
lowered soil pH, exchangeable bases, and C mineralization,
increased extractable soil P, and had no
effect on soil organic C, soil total N, soil microbial
biomass C and N, soil N mineralization, and specific
respiratory activity of microbial biomass. Agroforestry
systems did not improve soil quality compared to
pasture in this study.