Technological Quality of Sugarcane Inoculated with Plant-Growth-Promoting Bacteria and Residual Effect of Phosphorus Rates
Guilherme Carlos Fernandes,
Poliana Aparecida Leonel Rosa,
Arshad Jalal,
Carlos Eduardo da Silva Oliveira,
Fernando Shintate Galindo,
Ronaldo da Silva Viana,
Pedro Henrique Gomes De Carvalho,
Edson Cabral da Silva,
Thiago Assis Rodrigues Nogueira,
Abdulaziz A. Al-Askar,
Amr H. Hashem,
Hamada AbdElgawad,
Marcelo Carvalho Minhoto Teixeira Filho
Affiliations
Guilherme Carlos Fernandes
Department of Plant Health, College of Engineering, São Paulo State University (UNESP), Rural Engineering and Soils, Ilha Solteira 15385-000, SP, Brazil
Poliana Aparecida Leonel Rosa
Department of Plant Health, College of Engineering, São Paulo State University (UNESP), Rural Engineering and Soils, Ilha Solteira 15385-000, SP, Brazil
Arshad Jalal
Department of Plant Health, College of Engineering, São Paulo State University (UNESP), Rural Engineering and Soils, Ilha Solteira 15385-000, SP, Brazil
Carlos Eduardo da Silva Oliveira
Department of Plant Health, College of Engineering, São Paulo State University (UNESP), Rural Engineering and Soils, Ilha Solteira 15385-000, SP, Brazil
Fernando Shintate Galindo
Department of Plant Production, Faculty of Agricultural and Technological Sciences, São Paulo State University (UNESP), Dracena 17900-000, SP, Brazil
Ronaldo da Silva Viana
Department of Plant Production, Faculty of Agricultural and Technological Sciences, São Paulo State University (UNESP), Dracena 17900-000, SP, Brazil
Pedro Henrique Gomes De Carvalho
Department of Plant Health, College of Engineering, São Paulo State University (UNESP), Rural Engineering and Soils, Ilha Solteira 15385-000, SP, Brazil
Edson Cabral da Silva
Department of Plant Health, College of Engineering, São Paulo State University (UNESP), Rural Engineering and Soils, Ilha Solteira 15385-000, SP, Brazil
Thiago Assis Rodrigues Nogueira
Department of Plant Health, College of Engineering, São Paulo State University (UNESP), Rural Engineering and Soils, Ilha Solteira 15385-000, SP, Brazil
Abdulaziz A. Al-Askar
Department of Botany and Microbiology, Faculty of Science, King Saud University, Riyadh 11451, Saudi Arabia
Amr H. Hashem
Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt
Hamada AbdElgawad
Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, 2020 Antwerp, Belgium
Marcelo Carvalho Minhoto Teixeira Filho
Department of Plant Health, College of Engineering, São Paulo State University (UNESP), Rural Engineering and Soils, Ilha Solteira 15385-000, SP, Brazil
Phosphate fertilization in highly weathered soils has been a major challenge for sugarcane production. The objective of this work was to evaluate the foliar levels of phosphorus (P) and nitrogen (N) and the technological quality and productivity of second ratoon cane as a function of inoculation with plant-growth-promoting bacteria (PGPBs) together with the residual effect of phosphate fertilization. The experiment was carried out at the research and extension farm of Ilha Solteira, state of São Paulo, Brazil. The experiment was designed in a randomized block with three replications in a 5 × 8 factorial scheme. The treatments consisted of five residual doses of phosphorus (0, 45, 90, 135 and 180 kg ha−1 of P2O5, 46% P) applied at planting from the source of triple superphosphate and eight inoculations from three species of PGPB (Azospirillum brasilense, Bacillus subtilis and Pseudomonas fluorescens), applied in single or co-inoculation at the base of stems of sugarcane variety RB92579. Inoculation with PGPBs influenced leaf N concentration, while inoculations with Pseudomonas fluorescens and combinations of bacteria together with the highest doses exerted a positive effect on leaf P concentration. Co-inoculation with A. brasilense + Pseudomonas fluorescens associated with a residual dose of 135 kg ha−1 of P2O5 increased stem productivity by 42%. Thus, it was concluded that inoculations with Pseudomonas fluorescens and their combinations are beneficial for the sugarcane crop, reducing phosphate fertilization and increasing productivity.
