Coffee agroforestry systems have been promoted because they have smaller environmental impact than sun grown coffee. The majority of shade grown coffee systems use leguminous trees capable of fixing N2 from the atmosphere, ...

Sustainable production of shaded coffee brings multiple benefits, including the conservation and increase of soil fertility. The objective of this study was to evaluate the capacity of biological N2 fixation of 30 different ...

Coffee in Puerto Rico is cultivated mainly on Ultisols. These soils are caracterized as having low fertility, acidity, high clay content and highly erodability. To improve the fertility and reduce the erosion of these ...