Villalaz Pérez, J. A., Villarreal Núñez, J. E., Santo Pineda, A., Gutiérrez Lezcano, A., & Merino García, A. (2026). Effect of composted chicken manure on cocoa crop nutrition in agroforestry systems in Panama. Spanish Journal of Agricultural Research, 23(3), 20846. https://doi.org/10.5424/sjar/2025233-20846