Intervention effectmodel-written summary

A 40 Mg ha −1 biochar application enhanced plant K accumulation by 55% without lime.

A claim from Açaí biochar reduced soil acidity and enhanced potassium and micronutrient availability in Amazon Ferralsol under cowpea cultivation · 2026

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A 40 Mg ha −1 biochar application enhanced plant K accumulation by 55% without lime.

Treatment
40 Mg ha −1 biochar applicatione1
Outcome
plant K accumulatione1
Direction
enhancede1
Value
55%e1
Qualifier
even without limee1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“cowpea ( Vigna unguiculata [L.] Walp.)”

✓ located verbatim in the source · abstract, characters 648–686
e1

“A 40 Mg ha −1 biochar application increased soil pH by 0.52 units, reduced exchangeable Al by up to 53%, and enhanced plant K accumulation by 55%, even without lime”

✓ located verbatim in the source · abstract, characters 1005–1169

Title

Açaí biochar reduced soil acidity and enhanced potassium and micronutrient availability in Amazon Ferralsol under cowpea cultivation

Criscian Kellen Amaro de Oliveira Danielli; Antonio Leite Florentino; Filipe Eduardo Danielli; et al. Biomass and Bioenergy 2026. doi:10.1016/j.biombioe.2026.109378

Other claims from this paper (7)

Record rev-0bb53643fbfe64322d9d1e56fa93dede51d6393d24a25a35c79225e1469741ab · schema claims-v0.9 · position 3 in the model’s answer

biochar · nutrient: content · Vigna unguiculata (cowpea)Results agree

9 papers: 9 positive, 0 negative or no effect

8 papers in the same direction as this claim

  1. positive
  2. positive
  3. positive
  4. positive
  5. positive
  6. positive
  7. positive
  8. positive
See all 9 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.