Agroforestry and the Improvement of Soil Fertility: A View from Amazonia
Table 1
Levels of nutrients, organic matter, and acidity, by depth, in homegardens and savanna soils in Araçá Indigenous Land, Roraima, and Brazil. Homegarden values followed by * or ** are statistically different from savannas, with and , respectively, by Mann-Whitney test (-test).