Efecto de microorganismos rizosféricos y microalgas en el cultivo de cebolla (Allium cepa L.) en la parroquia Limones, cantón Zapotillo

The effect of rhizospheric microorganisms and microalgae was evaluated on the culture of onion (Allium cepa L.) in the Limones parish, Zapotillo canton, Ecuador. A field experiment was carried out with a completely randomized block design, using six treatments: Absolute control, native strains of the genera Azotobacter, Pseudomonas, Azospirillum, microalgae of the genus Chlorella and NPK chemical fertilization. Regarding growth, treatments with rhizospheric microorganisms and chemical fertilizer accelerated the phenological phases, increased plant height and the number of leaves compared to the control. For development, treatments with Pseudomonas, Azospirillum, microalgae and NPK chemical fertilizer presented a greater root system, diameter and bulb weight. In relation to yield, the treatments with the native rhizospheric strains and the chemical fertilizer surpassed the control. The treatment with NPK chemical fertilizer obtained the highest yield (33956.67 kg/ha), followed by the treatment with microalgae (31333.33 kg/ha) and Azospirillum (30600 kg/ha), compared to the control (25333. 33 kg/ha). In conclusion, the use of rhizosphere microorganisms such as Pseudomonas, Azotobacter, Azospirillum and Chlorella, in addition to chemical fertilizer, had a positive effect on the growth and yield of the onion crop. These results support the use of rhizospheric microorganisms as a viable alternative to chemical fertilizers, without compromising crop establishment.

• Main Author: Sánchez Infante, Brayan Raúl (author)
• Format: bachelorThesis
• Language: spa
• Published: 2024
• Subjects: CEBOLLA; MICRORGANISMOS RIZOSFERICOS; MICROALGAS
• Online Access: https://dspace.unl.edu.ec/jspui/handle/123456789/29843