Evaluation of nutrient extraction and uptake by forage grasses under high Andean mountain conditions in Peru

• Autores: Arias Arredondo, Alberto, Lopez Rodríguez, Melina, Cruz Luis, Juancarlos Alejandro, Requena Rojas, Edilson Jimmy, Ccopi Trucios, Dennis, Pizarro Carcausto, Samuel Edwin, Solórzano Acosta, Richard Andi
• Formato: artículo
• Fecha de Publicación: 2026
• Institución: Instituto Nacional de Innovación Agraria
• Repositorio: INIA-Institucional
• Lenguaje: inglés
• OAI Identifier: oai:repositorio.inia.gob.pe:20.500.12955/3086
• Enlace del recurso: http://hdl.handle.net/20.500.12955/3086; https://doi.org/10.35495/ajab.2025.252
• Nivel de acceso: acceso abierto
• Materia: Forage grasses; Nutrient uptake; Mountain grasslands; Soil fertilization; Gramíneas forrajeras; Absorción de nutrientes; Pastizales de montaña; Fertilización del suelo; https://purl.org/pe-repo/ocde/ford#4.01.06; Pastizales; Pastures; Altitud; Altitude; Festuca; Lolium perenne; Dactylis glomerata

This study evaluated nutrient extraction and uptake in native forage grasses (Festuca dolichophylla and Calamagrostis chrysantha) and improved species (Lolium perenne and Dactylis glomerata) at 4,100 m a.s.l. in the Peruvian Andes using a completely randomized design. Results revealed significant interspecific variability in nutrient accumulation. Dactylis glomerata showed superior macronutrient accumulation, particularly Mg, while Lolium perenne achieved highest K extraction (0.07 t ha⁻¹) and biomass production. Native species demonstrated lower nutritional demands: Festuca dolichophylla reached maximum dry matter production (6 t ha⁻¹), while Calamagrostis chrysantha showed elevated Ca and P concentrations. Correlation analysis revealed strong positive associations among Ca, Mg, Cu, Fe, Mn, and Zn (r = 0.7-1.0), indicating coordinated uptake mechanisms. Nickel exhibited negative correlations with P (r = -0.6) and K (r = -0.5). Improved species require intensive fertilization, while native species offer sustainable alternatives for low-input high-altitude systems.