Examinando por Materia "agricultura sostenible"

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Eco-Efficient Intensification of Potato with Bacillus subtilis and Trichoderma viride Under NPK Fertilization
(MDPI, 2025-10-15) Tueros Munive, Miguel Luis; Vilcapoma Paliza, Melina Luz; Pillaca Chillcce, Guido Bryan; Velásquez Mantari, José; Campos Villar, Henry; Cántaro Segura, Hector Baroni; Paitamala Campos, Omar; Matsusaka Quiliano, Daniel Claudio
Potato production in the Andean highlands demands strategies that reduce dependence on synthetic inputs without sacrificing yield. We evaluated two microbial bioinputs—Bacillus subtilis and Trichoderma viride—applied once pre-plant to seed tubers, under three organo-mineral fertilization regimes (0%, 50%, and 100% of the recommended NPK rate) in two cultivars (INIA 303-Canchán and Yungay) in field conditions in Ayacucho, Peru, using a randomized complete block, split-plot design (three replicates). Agronomic traits (plant height, root dry weight, stems per plant, tubers per plant, and plot-level yield) were analyzed with robust two-way ANOVA and multivariate methods. Combining microbial inoculation with 50% NPK sustained growth responses comparable to 100% NPK for key traits: in Yungay with T. viride, plant height at 50% NPK (≈96.15 ± 1.71 cm) was not different from 100% NPK (≈98.87 ± 1.70 cm), and root dry weight at 50% NPK (≈28.50 ± 0.28 g) matched or exceeded 100% NPK (≈16.97–22.62 g depending on cultivar–treatment). Notably, T. viride increased root biomass even without mineral fertilizer (≈27.62 ± 0.29 g in Yungay), while B. subtilis enhanced canopy vigor and stem number at full NPK (≈4.5 ± 0.29 stems). Yungay out-yielded INIA 303-Canchán overall (≈57.5 ± 2.5 kg vs. ≈42.7 ± 2.5 kg per plot). The highest yields occurred with B. subtilis + 100% NPK (≈62.88 ± 6.07 kg per plot), followed by B. subtilis + 50% NPK (≈51.7 ± 6.07 kg per plot). Plant height was the strongest correlate of yield (Spearman ρ ≈ 0.60), underscoring its value as a proxy for productivity. Overall, a single pre-plant inoculation with B. subtilis or T. viride can halve mineral fertilizer inputs while maintaining growth and sustaining high, cultivar-dependent yields in highland potato systems.
Inoculation of Bacillus subtilis in acidic soil amended with biochar and liming materials in maize cultivation
(Nature Publishing Group, 2025-08-06) Diaz Chuquizuta, Henry; Coral Cardenas, Sergio Axel; Arévalo Aranda, Yuri Gandhi; Sánchez Ojanasta, Martín; Diaz Chuquizuta, Percy; Ocaña Reyes, Jimmy Alcides; Solórzano Acosta, Richard Andi; Cuevas Giménez, Juan Pablo
The use of amendments in combination with Bacillus subtilis has been understudied as a strategy for rehabilitating acid soils and improving cropping systems. This study aimed to evaluate the effects of amendments and B. subtilis on the development, yield, and nutritional quality of the hard yellow maize Marginal 28 T variety. A randomized complete block design with a factorial arrangement was employed, considering five amendments, including biochar, alongside the application of B. subtilis. The combination of biochar and B. subtilis significantly increased plant and ear height (p < 0.01), achieved a grain yield of 4.11 t ha⁻¹, and reduced flowering time by seven days. Strong correlations were observed between male and female flowering (r = 0.99) and between stem diameter and leaf area (r = 0.95), indicating improved vegetative development. Soil pH and nutrient availability, such as phosphorus, were also enhanced. The combined use of amendments and B. subtilis optimizes yield and improves soil chemical properties. Thus, applying biochar and B. subtilis improves growth, yield, and soil quality, consolidating a promising strategy for sustainable agriculture in acid soils.
Manual práctico para la elaboración de Bocashi
(2024-11-29) Mosquera , Lelie; Blanco, María; Abensur Díaz, Giancarlos Israel; Araujo de Lima, Silvia; Mockshell, Jonathan
Un abono orgánico es el resultado de la descomposición natural de restos de plantas y animales con la ayuda de microorganismos (bacterias y hongos). Este proceso transforma los restos en nutrientes que enriquecen el suelo y favorecen el crecimiento de las plantas. Bocashi es un termino japonés que significa "abono fermentado" y consiste en convertir los desechos orgánicos en un fertilizante nutritivo mediante un proceso de descomposición con oxígeno.