Examinando por Materia "Guinea pig manure"

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Biorremediación del suelo con acidez y metales pesados (As, Cd) en un ecosistema altoandino con influencia minera mediante biochar de estiércol de cuy y consorcios microbianos
(DEEV MINAS, 2026-04-24) Arias Arredondo, Alberto; Cruz Luis, Juancarlos Alejandro; López Rodríguez, Melina; Solórzano Acosta, Richard Andi
Los suelos de pastizales altoandinos en zonas con influencia minera (Pasco, Perú, 4125 m) presentan acidez y contaminación por arsénico (As: 5.77 mg kg⁻¹) y cadmio (Cd: 1.71 mg kg⁻¹), lo que genera riesgo de transferencia de metales a la cadena trófica ganadera. Evaluamos el efecto del biochar de estiércol de cuy inoculado con consorcios microbianos (Bacillus subtilis, Pseudomonas putida, Trichoderma sp.) sobre la inmovilización de As y Cd y la calidad nutricional de pastos nativos (Festuca dolichophylla, Carex sp.) y cultivados (Lolium perenne, Dactylis glomerata). Establecimos un experimento factorial 4×4 en bloques completos al azar (48 parcelas). Determinamos factores de bioconcentración (BCF) y calidad nutricional, analizando mediante GLM y PCA. Los resultados evidenciaron una interacción significativa especie×tratamiento. Destacó la reversión fenotípica de Festuca dolichophylla frente a As, que pasó de acumuladora (BCF>1) a exclusora efectiva (BCF<<0.01) bajo inoculación con Trichoderma sp. Asimismo, Trichoderma sp. y P. putida redujeron la translocación de Cd en Lolium perenne (BCF<<0.1), manteniendo niveles seguros para consumo animal. El uso sinérgico de biochar y consorcios microbianos mitigó la transferencia de metales y preservó la calidad nutricional del forraje.
Improvement and maturation of liquid biofertilizers in series-connected biodigesters: comparative analysis of guinea pig manure and vermicompost leachate
(MDPI, 2025-11-05) Gómez Montoya, Juan Pablo; Castillo Alvarez, Yoisdel; Ortiz Dongo, Luis Felipe; Solórzano Acosta, Richard Andi; Patiño Agudelo, Alisson Dahian; Luna delRisco, Mario; Arrieta Gonzales, Carlos E.
The recovery of livestock waste through multistage anaerobic digestion represents a key strategy for producing high-efficiency liquid biofertilizers within circular economy frameworks. This study compared two underexplored substrates—guinea pig manure and vermicompost leachate (VL)—processed in series biodigesters to evaluate their nutrient composition and agronomic performance. The guinea pig manure biol exhibited higher macronutrient concentrations (N = 1.09–3.74 g L−1 ; P = 0.06–0.64 g L−1 ; K = 1.85–3.20 g L−1 ) and electrical conductivity (14.1–26.5 mS cm−1 ), while VL presented a more balanced nutrient profile (N = 0.65–0.71 g L−1 ; P = 0.04–0.09 g L−1 ; K = 2.46–3.76 g L−1 ) and slightly lower salinity (15.0–17.2 mS cm−1 ). Micronutrient levels (Fe, Mn, Zn, B) exceeded the reference thresholds established by EU Regulation 2019/1009 for liquid fertilizers, suggesting the need for dilution prior to field application. In maize field trials, VL diluted 1:7 increased above-ground biomass by 28%, and guinea pig biol diluted 1:10 achieved a 22% increase compared to the control, confirming their biostimulant potential. However, the high sodium content (848–1024 mg L−1 ) may limit application on saline or poorly drained soils, requiring adaptive agronomic management. These findings demonstrate that multistage anaerobic digestion effectively transforms unconventional organic waste into nutrient-rich biofertilizers, expanding the scientific foundation for alternative substrates and reinforcing their potential to enhance Andean smallholder agriculture, nutrient recycling, and food security within a sustainability-oriented bioeconomy.