Abstract
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.
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Claims 5
Claim · model-written summary
PGPB inoculation influenced sugarcane leaf nitrogen concentration.
Not reportedComparatorDirection
Verbatim
e0“Inoculation with PGPBs influenced leaf N concentration”
t0“Sugarcane”
Claim · model-written summary
Pseudomonas fluorescens inoculation with high phosphorus doses increased leaf phosphorus concentration.
- Taxon
- sugarcanet0
- Treatment
- inoculations with Pseudomonas fluorescense0
- Interactor
- Pseudomonas fluorescens
.JPG?width=60)
Pseudomonas fluorescense0symbiont - Outcome
- leaf P concentratione0
- Direction
- positive effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“inoculations with Pseudomonas fluorescens and combinations of bacteria together with the highest doses exerted a positive effect on leaf P concentration”
t0“Sugarcane”
Claim · model-written summary
Bacterial combinations with high phosphorus doses increased leaf phosphorus concentration.
- Taxon
- sugarcanet0
- Treatment
- combinations of bacteria together with the highest dosese0
- Outcome
- leaf P concentratione0
- Direction
- positive effecte0
Not reportedComparator
Verbatim
e0“combinations of bacteria together with the highest doses exerted a positive effect on leaf P concentration”
t0“Sugarcane”
Claim · model-written summary
A. brasilense and Pseudomonas fluorescens co-inoculation at 135 kg ha−1 P2O5 increased stem productivity by 42%.
- Taxon
- sugarcanet0
- Treatment
- Co-inoculation with A. brasilense + Pseudomonas fluorescens associated with a residual dose of 135 kg ha−1 of P2O5e0
- Interactor
- A. brasilense
Azospirillum brasilensee0symbiont - Second interactor
- Pseudomonas fluorescensPseudomonas fluorescense0symbiont
- Outcome
- stem productivitye0
- Direction
- increasede0
- Value
- 42%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Co-inoculation with A. brasilense + Pseudomonas fluorescens associated with a residual dose of 135 kg ha−1 of P2O5 increased stem productivity by 42%”
t0“Sugarcane”
Claim · model-written summary
The authors conclude Pseudomonas fluorescens inoculation and combinations benefit sugarcane by reducing fertilizer need and raising productivity.
- Taxon
- sugarcanee0
- Interactor
- Pseudomonas fluorescensPseudomonas fluorescense0symbiont
- Outcome
- reducing phosphate fertilization and increasing productivitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculations with Pseudomonas fluorescens and their combinations are beneficial for the sugarcane crop, reducing phosphate fertilization and increasing productivity”
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