Worancha ወራንቻ

Abstract Based on farmers’ knowledge and laboratory studies, the nutrient accumulation in the topsoil (0–20 cm) under  Cordia africana  Lam (Cordia),  Millettia ferruginea  Hochst (Millettia) and  Eucalyptus camaldulensis  Dehnhardt (Red gum) managed under two agroforestry practices on different farms at three sites was evaluated. The number of these trees on individual farms has increased during the last two decades. The number of stems ha −1  of Red gum was higher on farms of wealthier households than on farms of poor and medium households at two of the sites, but, at one site the number of stems ha −1  on farms of poor households was higher than on farms of wealthier households. Apart from the concentration of Na in the topsoil, there were significant variations in the analysed soil nutrients between the tree species. At all study sites, significantly higher concentration of P was observed under Millettia and Cordia than under Red gum. At one site, concentrations of available