Nitrogen pools in páramo soils under green onion cropping: vertical distribution, prediction, and management implications
Daniela Cristina Rey-Romero·Édgar Ricardo Oviedo-Ocaña·Martha Daza- Torres·John Márquez Molina·Viviana M Varón-Ramírez·Mario Guevara·Viviana Sánchez-Torres
Context High-mountain páramos provide essential hydrological services across the Andes. However, green onion cultivation in these ecosystems has led to nitrogen (N) losses, compromising water quality. Aims This study aimed to improve understanding of soil N dynamics in páramo agroecosystems by analyzing the vertical and temporal distribution of total and mineral N in páramo soils, and by developing pedotransfer functions (PTFs) to predict these pools. Method From two cultivated plots and one nat