Soil inoculation with Pseudomonas fluorescens, Azospirillum oryzae, Bacillus subtilis and mountain microorganisms (MM) and its effect on a soybean-tomato crop rotation system under greenhouse conditions

 

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Autores: Castro Barquero, Leida, Murillo Roos, Mariana, Uribe Lorío, Lidieth, Mata Chinchilla, Rafael
Formato: artículo original
Estado:Versión publicada
Fecha de Publicación:2015
Descripción:The effect, on growth of plants and soil properties, of incorporating green biomass and applying individual and compound microbial inocula was evaluated in a soybeantomato crop rotation system during 24 months in the greenhouse. Nine different conditions were evaluated: tomato alone (T); tomato-soybean rotation (TS); tomato-soybean rotation with individual inoculations of Azospirillum oryzae (A); of Pseudomonas fluorescens (P); of Bacillus subtilis (B); of mountain microorganisms (MM); and tomato-soybean rotation with mixtures of B. subtilis and P. fluorescens (BP); of B. subtilis, P. fluorescens, and A. oryzae (BPA); of B. subtilis, P. fluorescens, Azospirillum sp., and mountain microorganisms (BPAMM). The following physical and chemical soil indicators (variables) were evaluated: apparent density; particle density; hydraulic conductivity; pore volume (porosity); aggregate stability; penetration resistance (PR); pH; electrical conductivity (EC); carbon and nitrogen content; C/N ratio; and soil and foliar nutrient content. Biological indicators were also assessed: soil respiration; colony-forming units (CFU) of fungi, bacteria and actinomycetes; fresh and dry foliar weight. The physical variables were not affected by the treatments, except for PR, which was higher in treatment T. Chemical and biological variables were sensitive to the treatments, with significantly higher values in the presence of MM. The rise of P in soil solution in treatments with MM was of special importance: it increased from 6 to 20 mg.l-1; this condition was also reflected in the concentration of P in foliar tissue at the end of assay. It was determined that pH, EC and soil respiration were affected by the interaction among the treatments applied and the time elapsed; the highest values were obtained at the end of the assay and in treatments with MM.
País:Portal de Revistas UCR
Institución:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Lenguaje:Español
OAI Identifier:oai:portal.ucr.ac.cr:article/21787
Acceso en línea:https://revistas.ucr.ac.cr/index.php/agrocost/article/view/21787
Access Level:acceso abierto
Palabra clave:azospirillum oryzae
Pseudomonas fluorescens
Bacillus subtilis
microorganismos de montaña (MM)
inoculation
inoculación