Does Organomineral Fertilizer Combined with Phosphate-Solubilizing Bacteria in Sugarcane Modulate Soil Microbial Community and Functions?

Autor(es)

Miranda Silva, Antonio Marcos ^[1] ; Estrada-Bonilla, German A. ^[2] ; Lopes, Cintia Masuco ^[1] ; Matteoli, Filipe Pereira ^[1] ; Cotta, Simone Raposo ^[3] ; Feiler, Henrique Petry ^[1] ; Rodrigues, Yasmin Florentino ^[1] ; Bran Nogueira Cardoso, Elke Jurandy ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Soil Sci Dept, Piracicaba, SP - Brazil

^[2] Corp Colombiana Invest Agr AGROSAVIA CI Tibaitata, Mosquera, Cundinamarca - Colombia

^[3] Univ Sao Paulo, Ctr Nucl Energy Agr, Piracicaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MICROBIAL ECOLOGY; SEP 2021.
• Citações Web of Science: 0

Resumo

Soil bacterial and fungal communities are suitable soil ecosystem health indicators due to their sensitivity to management practices and their role in soil ecosystem processes. Here, information on composition and functions of bacterial and fungal communities were evaluated at two phenological stages of sugarcane (six and twelve months, equivalent to the most intensive vegetative stage and to final maturation, respectively) when organomineral fertilizer, combined with phosphate-solubilizing bacteria (PSB), was added into the soil. Organic compost enriched with apatite (C + A) or phosphorite (C + P) and compost without phosphate enrichment (C) were used in the presence or absence of PSB. In addition, we used a control fertilized with soluble triple superphosphate. The differences were more related to the sampling period than to the type of organomineral fertilizer, being observed higher available phosphorus at six months than at twelve months. Only in the C treatment we observed the presence of Bacillaceae and Planococcaceae, while Pseudomonadaceae were only prevalent in inoculated C + A. As for fungi, the genera Chaetomium and Achroiostachys were only present in inoculated C + P, while the genus Naganishia was most evident in inoculated C + A and in uninoculated C + P. Soliccocozyma represented 75% of the total fungal abundance in uninoculated C while in inoculated C, it represented 45%. The bacterial community was more related to the degradation of easily decomposable organic compounds, while the fungal community was more related to degradation of complex organic compounds. Although the microbial community showed a resilient trait, subtle changes were detected in microbial community composition and function, and this may be related to the increase in yield observed. (AU)

• Processo FAPESP: 16/18944-3 - Mudanças climáticas e eficiência energética na agricultura: um enfoque em estresse hídrico, manejo orgânico e biologia do solo
• Beneficiário: Elke Jurandy Bran Nogueira Cardoso
• Modalidade de apoio: Auxílio à Pesquisa - Programa de Pesquisa sobre Mudanças Climáticas Globais - Temático