Samaniego Vivanco, Tomás DanielArévalo Aranda, Yuri GandhiPérez Porras, Wendy ElizabethChung Montoya, FernandoGómez Palomino, LauraQuispe Callasi, FlorRodríguez Pérez, BerlanJia, FangAchata Böttger, Jorge2026-07-022026-07-022026-05-30Samaniego, T., Arévalo-Aranda, Y. G., Pérez, W. E., Chung-Montoya, F., Gómez-Palomino, L., Quispe-Callasi, F., Rodríguez-Pérez, B., Jia, F., & Achata-Böttger, J. (2026). Chicken manure-based organomineral fertilization improves nutrient use efficiency and reduces greenhouse gases (GHGs) emissions in maize. Cleaner Environmental Systems, 22, 100460. https://doi.org/10.1016/j.cesys.2026.1004602666-7894http://hdl.handle.net/20.500.12955/3203Organomineral fertilizers (OMF) represent an opportunity to develop locally sourced fertilizers to decarbonize grain value chains. A two-location field study comparing OMF and mineral fertilizers (MF) agronomic and environmental performance was established at two Peruvian valleys, the environmental impacts of maize grain produced with locally produced OMF and imported MF were modelled through cradle-to-gate life cycle analysis (LCA). The carbon footprints (CF) of OMF resulted smaller than those of imported MF. Fully replacing MF with OMF results in equivalent grain yield, 43% higher phosphorus agronomic efficiency and reduced cradle-to-gate greenhouse gas (GHG) emissions in up to 232 kg carbon dioxide (CO₂) eq Mg⁻¹ grain. Estimated NOx emissions, nutrient lixiviation and mineral resource depletion were reduced as well, providing support for OMF as a tool for sustainable grain production.application/pdfenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Organomineral fertilizerFertilizante organomineralNutrient use efficiencyEficiencia en el uso de nutrientesNOxCarbon footprintHuella de carbonoinfo:eu-repo/semantics/articlehttps://purl.org/pe-repo/ocde/ford#4.01.07https://doi.org/10.1016/j.cesys.2026.100460Maíz, Maize; Estiércol de aves de corral, Poultry manure; Abono compuesto, Compound fertilizers; Gases de efecto invernadero, Greenhouse gases; Fósforo, Phosphorus; Nitrógeno, Nitrogen; Análisis del ciclo de vida, Life cycle analysis.