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| Treatments | Symbols |
|---|---|
| Control | Cont |
| Full dosage of NP fertilizers | CFF |
| Half dosage of NP fertilizers | CFH |
| Quarter dosage of NP fertilizers | CFQ |
| Azospirillum brasilense | SP |
| A. brasilense+full dosage of NP fertilizers | SPF |
| A. brasilense+half dosage NP of fertilizers | SPH |
| A. brasilense+quarter dosage of NP fertilizers | SPQ |
| Azotobacter vinelandii | BT |
| A. vinelandii+full dosage of NP fertilizers | BTF |
| A. vinelandii+half dosage of NP fertilizers | BTH |
| A. vinelandii+quarter dosage of NP fertilizers | BTQ |
