Critical edaphic and altitudinal factors influencing cation exchange capacity in coffee-growing soils of northeastern Peru: implications for sustainable fertility management
Geomar Vallejos-Torres
IntroductionEffective cation exchange capacity (ECEC) is a key indicator of soil fertility and sustainable soil management assessment in coffee-growing systems.MethodsThis study aimed to identify the principal edaphic and altitudinal factors explaining ECEC variability in 69 soil samples collected from coffee farms in northeastern Peru.ResultsECEC results exhibited substantial variation, ranging from 0.14 to 55.49 cmol(+)·kg−1 (mean = 15.21; SD = 12.47), and were significantly correlated with or