Phosphorus source driving the soil microbial interactions and improving sugarcane development

Author(s)

Gumiere, Thiago ^[1] ; Rousseau, Alain N. ^[2] ; da Costa, Diogo Paes ^[1] ; Cassetari, Alice ^[1] ; Cotta, Simone Raposo ^[1] ; Andreote, Fernando Dini ^[1] ; Gumiere, Silvio J. ^[3] ; Pavinato, Paulo Sergio ^[1]

Affiliation

^[1] Univ Sao Paulo, ESALQ USP, Luiz de Queiroz Coll Agr, Dept Soil Sci, Av Padua Dias 11, CP 09, BR-13418900 Piracicaba, SP - Brazil

^[2] Ctr Eau Terre Environm, Inst Natl Rech Sci, 490 Rue Couronne, Quebec City, PQ G1K 9A9 - Canada

^[3] Laval Univ, Dept Soil & Agrifood Engn, 2325 Rue Univ, Quebec City, PQ G1V 0A6 - Canada

• Document type: Journal article
• Source: SCIENTIFIC REPORTS; v. 9, MAR 13 2019.
• Web of Science Citations: 0

Abstract

The world demand for phosphate has gradually increased over the last decades, currently achieving alarming levels considering available rock reserves. The use of soil microorganisms, such as arbuscular mycorrhizal fungi (AMF), has been suggested as a promising alternative to improve phosphorus-use efficiency. However, the effect of the source of phosphorus on the interactions within the soil microbial community remains unclear. Here, we evaluated the links between the total dry matter content of sugarcane and the interactions within the soil microbial community under different phosphate sources, with/without AMF inoculation. The phosphate sources were Simple Superphosphate (SS, 18% of P2O5), Catarao rock phosphate (CA, 2.93% of P2O5) and Bayovar rock phosphate (BA, 14% of P2O5). The results indicated that the BA source led to the largest total dry matter content. The phosphate source affected total dry matter and the structure of the soil microbial communities. The bacterial interactions increased across sources with high percentage of P2O5, while the fungal interactions decreased. The interactions between bacterial and fungal microorganisms allowed to identify the percentage of P(2)O(5 )resulting in the highest total sugarcane dry matter. Our findings suggested the soil microbial interactions as a potential microbial indicator helping to improve the agricultural management. (AU)

• FAPESP's process: 13/18529-8 - Space-time dynamics of microorganism in soil of sugarcane under different managements
• Grantee: Thiago Gumiere
• Support Opportunities: Scholarships in Brazil - Doctorate