Abstract
The use of microbes that improve plant phosphorus (P) use efficiency is an avenue to boost crop yields while alleviating environmental impacts. We tested three microbial inoculants (Rhizoglomus irregulare alone – designated AMF; Pseudomonas putida alone – designated PSB; and R. irregulare and P. putida in consortium – designated AMF+PSB), combined with chemical fertilizers, in an intensive maize agricultural system. As hypothesized: (i) despite the native soil microbial community and the application of P fertilizer, the microbial inoculants enhanced plant P uptake from the soil by 14–60%, and consequently improved P acquisition efficiency; (ii) PSB and AMF+PSB plants produced ±50% more biomass per unit of P taken up, and consequently enhanced plant internal P use efficiency (i.e. the biomass produced per unit of P); and (iii) the combined inoculation of AMF and PSB provided the best results in terms of productivity and P use efficiency. Further, the microbial inoculants altered P allocation within the plant, reducing grain P concentration. By testing the microbial inoculants under field conditions, our study clearly shows that the microbial consortium (AMF+PSB) increased maize productivity, and at the same time improved P use efficiency. Further, the use of these microbial inoculants was shown to be compatible with conventional agricultural management practices.
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Claims 11
Claim · model-written summary
Microbial inoculants increased maize phosphorus uptake by 14–60%.
- Treatment
- microbial inoculantse0
- Outcome
- plant P uptake from the soile0
- Direction
- enhancede0
- Value
- 14–60%e0
Not reportedTaxonComparator
Verbatim
e0“the microbial inoculants enhanced plant P uptake from the soil by 14–60%”
t0“maize”
Claim · model-written summary
Microbial inoculants improved maize phosphorus acquisition efficiency.
Not reportedTaxonTreatmentComparator
Verbatim
e0“consequently improved P acquisition efficiency”
t0“maize”
Claim · model-written summary
PSB inoculation produced about 50% more maize biomass per unit phosphorus taken up.
Not reportedTaxonComparator
Verbatim
e0“PSB and AMF+PSB plants produced ±50% more biomass per unit of P taken up”
t0“maize”
Claim · model-written summary
AMF+PSB inoculation produced about 50% more maize biomass per unit phosphorus taken up.
Not reportedTaxonComparator
Verbatim
e0“PSB and AMF+PSB plants produced ±50% more biomass per unit of P taken up”
t0“maize”
Claim · model-written summary
Combined AMF and PSB inoculation gave the best productivity.
Not reportedTaxonComparator
Verbatim
e0“the combined inoculation of AMF and PSB provided the best results in terms of productivity and P use efficiency.”
t0“maize”
Claim · model-written summary
Combined AMF and PSB inoculation gave the best phosphorus use efficiency.
Not reportedTaxonComparator
Verbatim
e0“the combined inoculation of AMF and PSB provided the best results in terms of productivity and P use efficiency.”
t0“maize”
Claim · model-written summary
Microbial inoculants altered phosphorus allocation within maize plants.
Not reportedTaxonComparatorDirection
Verbatim
e0“the microbial inoculants altered P allocation within the plant”
t0“maize”
Claim · model-written summary
Microbial inoculants reduced maize grain phosphorus concentration.
- Organ / stage
- graine0
- Treatment
- microbial inoculantse0
- Outcome
- grain P concentratione0
- Direction
- reducinge0
Not reportedTaxonComparator
Verbatim
e0“the microbial inoculants altered P allocation within the plant, reducing grain P concentration.”
t0“maize”
Claim · model-written summary
The microbial consortium increased maize productivity in the field.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the microbial consortium (AMF+PSB) increased maize productivity”
t0“maize”
Claim · model-written summary
The microbial consortium improved maize phosphorus use efficiency in the field.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the microbial consortium (AMF+PSB) increased maize productivity, and at the same time improved P use efficiency.”
t0“maize”
Claim · model-written summary
The microbial inoculants were compatible with conventional agricultural management.
- Treatment
- microbial inoculantse0
- Outcome
- compatible with conventional agricultural management practicese0
Not reportedTaxon
Verbatim
e0“the use of these microbial inoculants was shown to be compatible with conventional agricultural management practices.”
t0“maize”
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