Estudio comparativo de las propiedades fisicoquímicas del rábano (Raphanus sativus) en cultivos hidropónicos inoculados con Bacillus subtilis y Pseudomonas aeruginosa

Abstract

The current graduation work compared the physicochemical properties of radish (Raphanus sativus) in hydroponic crops inoculated with Bacillus subtilis and Pseudomonas aeruginosa. The NFT (Nutrient Film Technique) system used was built and designed with PVC pipes for the production of twelve seedlings with water and nutrients recirculation, while the greenhouse used corresponds to a Parral-type greenhouse built with wood and greenhouse plastic. To inoculate the microorganisms into the hydroponic crop nutrient solution, the activation and subsequent replication of the bacterial strains were carried out in the Nutrient Broth culture medium and the content was poured into the tank with the nutritive solution in order to check the microbial growth through the plate seedling. The physicochemical properties to be analyzed were: height and number of leaves per plant, diameter and weight of the fruit, germination percentage, pH of the fruit and acidity content, sugar, humidity and ascorbic acid of the fruit; Thus, for their comparison, ANOVA statistical analysis and Tukey test were carried out, resulting in a confidence level of 95% as well as the null presence of statistically significant differences between the means of the treatments and the little or no effectiveness of both RPCV (Plant Growth Promoting Rhizobacteria) in improving the characteristics of radish compared to the Control treatment. It is recommended to inoculate the bacterial strains into the seedbeds containing the seedlings and apply the treatments in other hydroponic systems.