Abstract
The objective of this research was to evaluate the effect of inoculation and co-inoculation of rhizobia and Azospirillum brasilense combined with humic substances (HS) in growth promotion of Phaseolus lunatus (lima bean) and Leucaena leucocephala (leucaena). For this, experiments in a greenhouse with the cultivation of each plant species were carried out. A randomized complete block experimental design with five repetitions was followed. Plant seeds were sown and then inoculated with rhizobia and co-inoculated with A. brasilense. Subsequently, HS were added at the dose recommended by the manufacturer. In the experiments with both plants, control treatments with the addition of nitrogen (N) with or without HS were used. After 45 days, the shoot dry mass (SDM), root dry mass (RDM), shoot-accumulated N (Nac) and relative efficiency index (REI) were determined. In addition, the mass of dry nodules (MDN) in the lima bean plants and the number of nodules (NN) in leucaena plants were determined. The results showed that in the lima bean and leucaena plants there was a greater increase in SDM, RDM and Nac in treatments that received HS and co-inoculation with rhizobia and A. brasilense than in treatments that were inoculated only with rhizobia and HS and in treatments that received N and HS compared to addition of N and isolated inoculation of rhizobia. The combined application of HS and rhizobia in co-inoculation with A. brasilense had a greater effect on the increase of MDN in lima bean and NN in leucaena, than in treatments where only rhizobia with HS were added. These results indicate the existence of potential interaction of the use of HS with the co-inoculation of rhizobia and A. brasilense, showing promise for the production of sustainable agricultural crops.
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Claims 4
Claim · model-written summary
Humic substances with rhizobia and A. brasilense co-inoculation increased shoot and root dry mass and accumulated N in lima bean over rhizobia and humic substances.
- Taxon
- lima bean
Phaseolus lunatuse0 - Treatment
- HS and co-inoculation with rhizobia and A. brasilensee0
- Interactor
- rhizobiae0symbiont
- Second interactor
- A. brasilense
Azospirillum brasilensee0symbiont - Outcome
- SDM, RDM and Nace0
- Direction
- greater increasee0
- Comparator
- inoculated only with rhizobia and HSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the lima bean and leucaena plants there was a greater increase in SDM, RDM and Nac in treatments that received HS and co-inoculation with rhizobia and A. brasilense than in treatments that were inoculated only with rhizobia and HS”
Claim · model-written summary
The same co-inoculation treatment increased shoot and root dry mass and accumulated N in leucaena over rhizobia and humic substances.
- Treatment
- HS and co-inoculation with rhizobia and A. brasilensee0
- Interactor
- rhizobiae0symbiont
- Second interactor
- A. brasilenseAzospirillum brasilensee0symbiont
- Outcome
- SDM, RDM and Nace0
- Direction
- greater increasee0
- Comparator
- inoculated only with rhizobia and HSe0
LeucaenaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the lima bean and leucaena plants there was a greater increase in SDM, RDM and Nac in treatments that received HS and co-inoculation with rhizobia and A. brasilense than in treatments that were inoculated only with rhizobia and HS”
Claim · model-written summary
Humic substances with co-inoculation increased lima bean dry nodule mass more than rhizobia with humic substances.
- Taxon
- lima beanPhaseolus lunatuse0
- Treatment
- HS and rhizobia in co-inoculation with A. brasilensee0
- Interactor
- rhizobiae0symbiont
- Second interactor
- A. brasilenseAzospirillum brasilensee0symbiont
- Outcome
- MDNe0
- Direction
- greater effect on the increasee0
- Comparator
- only rhizobia with HSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined application of HS and rhizobia in co-inoculation with A. brasilense had a greater effect on the increase of MDN in lima bean and NN in leucaena, than in treatments where only rhizobia with HS were added”
Claim · model-written summary
Humic substances with co-inoculation increased leucaena nodule number more than rhizobia with humic substances.
- Treatment
- HS and rhizobia in co-inoculation with A. brasilensee0
- Interactor
- rhizobiae0symbiont
- Second interactor
- A. brasilenseAzospirillum brasilensee0symbiont
- Outcome
- NNe0
- Direction
- greater effect on the increasee0
- Comparator
- only rhizobia with HSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined application of HS and rhizobia in co-inoculation with A. brasilense had a greater effect on the increase of MDN in lima bean and NN in leucaena, than in treatments where only rhizobia with HS were added”
The same questions in other papers
inoculation · symbiosis · Phaseolus lunatus (lima bean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
other · growth · Phaseolus lunatus (lima bean)Results agree
1 paper in the same direction as this paper
- positive
inoculation · symbiosis · LeucaenaResults agree
1 paper in the same direction as this paper
- positive
inoculation · growth · LeucaenaResults agree
3 papers in the same direction as this paper
- positive
- positive
- positive
inoculation · growth · Phaseolus lunatus (lima bean)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.