Abstract
Abstract Background Innovative technologies are required in agricultural production to eliminate the environmental risk generated by the intensive use of fertilizers and pesticides. Soil organic matter is a keystone for the transition towards sustainable production. However, it is not an easy task to increase soil organic matter in highly weathered soils without considerable resources and energy. Here, we highlighted the role of biological inputs in plant adaptation to low fertility and water scarcity. The direct use of humic acids and plant growth-promoting bacteria on plants can modify the root architecture systems, including surface area and roots length, thus allowing greater soil exploration. Material and methods Within a socio-historical perspective of concepts and research methods, a case study is presented on the effects of humic acids applied together with plant-growth promoting bacteria, as an efficient tool for supporting the transition to more suitable production system. We implemented this natural ecological approach onto a polyculture system with different tropical fruits (banana, passion fruit, papaya and pineapple) and evaluated crop yields. Results We observed increases of around 50 and 90% in banana and papaya yield, respectively, and 25% in passion fruit productions, with significantly greater yields maintained over four production cycles. No effect was observed in ananas production probably due to the large shading level in the area. Conclusion The biostimulant formulated with endophytic diazotrophic bacteria and humic acids represents a low-cost technology that enhances crop yields and can play an important role in promoting a transition process towards sustainable agriculture. Graphical Abstract
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Claims 4
Claim · model-written summary
Biostimulant treatment increased banana yield around 50%.
- Taxon
- bananae0
- Treatment
- humic acids and plant-growth promoting bacteriat0
- Interactor
- plant-growth promoting bacteriat0symbiont
- Outcome
- yielde0
- Direction
- increasese0
- Value
- around 50e0
Not reportedComparator
Verbatim
e0“We observed increases of around 50 and 90% in banana and papaya yield, respectively, and 25% in passion fruit productions, with significantly greater yields maintained over four production cycles.”
t0“humic acids and plant-growth promoting bacteria”
Claim · model-written summary
Biostimulant treatment increased papaya yield around 90%.
- Taxon
- papaya
_-_DPLA_-_55200ec009622d7d42349f3583df310e.jpg?width=60)
Carica papayae0 - Treatment
- humic acids and plant-growth promoting bacteriat0
- Interactor
- plant-growth promoting bacteriat0symbiont
- Outcome
- papaya yielde0
- Direction
- increasese0
- Value
- 90%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_-_DPLA_-_55200ec009622d7d42349f3583df310e.jpg?width=500)
Verbatim
e0“We observed increases of around 50 and 90% in banana and papaya yield, respectively, and 25% in passion fruit productions, with significantly greater yields maintained over four production cycles.”
t0“humic acids and plant-growth promoting bacteria”
Claim · model-written summary
Biostimulant treatment increased passion fruit production 25%.
- Taxon
- passion fruit
Passiflora edulise0 - Treatment
- humic acids and plant-growth promoting bacteriat0
- Interactor
- plant-growth promoting bacteriat0symbiont
- Outcome
- passion fruit productionse0
- Direction
- increasese0
- Value
- 25%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We observed increases of around 50 and 90% in banana and papaya yield, respectively, and 25% in passion fruit productions, with significantly greater yields maintained over four production cycles.”
t0“humic acids and plant-growth promoting bacteria”
Claim · model-written summary
No effect was observed in pineapple production, possibly because of shading.
- Treatment
- humic acids and plant-growth promoting bacteriat0
- Interactor
- plant-growth promoting bacteriat0symbiont
- Outcome
- ananas productione0
- Direction
- No effecte0
- Qualifier
- large shading levele0
AnanasNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No effect was observed in ananas production probably due to the large shading level in the area.”
t0“humic acids and plant-growth promoting bacteria”
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