Navegando por Autor "Edouard, Lovely Santia"

Agora exibindo 1 - 1 de 1
  • Imagem de Miniatura
    Item
    Uso de Azospirillum brasilense ABV5 e ABV6 e Pseudomonas fluorescens no desenvolvimento inicial de plantas
    (Universidade Estadual do Norte do Paraná, 2025) Edouard, Lovely Santia; Matsumoto, Leopoldo Sussumu; https://orcid.org/0000-0001-5102-545X; http://lattes.cnpq.br/0857955043436449; Matsumoto, Leopoldo Sussumu; https://orcid.org/0000-0001-5102-545X; http://lattes.cnpq.br/0857955043436449; Kölln, Oriel Tiago; https://orcid.org/0000-0002-8507-9808; http://lattes.cnpq.br/8041626078120100; Dário, Karina Aline Alves; https://orcid.org/0000-0002-8916-0224; http://lattes.cnpq.br/6915234182529881
    Sustainable agriculture is essential to address challenges related to food security and environmental protection. The use of bioinputs such as Azospirillum brasilense and Pseudomonas fluorescens emerges as a promising alternative to chemical inputs to improve soil fertility and sugarcane crop productivity, while reducing environmental impacts. These microorganisms, often called PGPR (Plant Growth Promoting Rhizobacteria), act through several mechanisms, such as atmospheric nitrogen fixation, nutrient solubilization, and the production of phytohormones that favor root development and increase plant resistance to abiotic stress. The objective of this study was to evaluate the effectiveness of the bioinput based on Azospirillum brasilense and Pseudomonas fluorescens produced in bioreactors in isolated and combined mixtures, in the development of sugarcane. The actions of bioinputs on the germination of soybean and corn seeds and their biocontrol action against phytopathogenic fungi were evaluated. The influence of bioinputs on the soil microbial community and the agronomic parameters of sugarcane were also evaluated. The trial was conducted in a Plant Growth Chamber with controlled temperature, photoperiod and humidity. The use of Azospirillum and Pseudomonas alone did not interfere with germination; however, their combined use had a negative influence on the germination of corn and soybeans. The strains evaluated did not evaluate biocontrol activity. From a microbiological point of view, the study revealed that the application of bioinputs significantly increased the microbial biomass and biological activity of the soil, confirming their role in the regeneration of the soil microbial structure, a key factor in maintaining the fertility and sustainability of agricultural lands. The improvement in microbiological attributes influenced the agronomic parameters, demonstrating greater plant height, greater fresh and dry mass of the aerial part and root. Thus, we can conclude that the bioinputs based on Azospirillum brasilense Abv5 and Abv6 and Pseudomonas fluorescens, collected separately or together, had a positive impact on soil quality, improving both its structure and its capacity to retain essential nutrients for crops.