Intervention effectmodel-written summary

Lavender essential oil reduced lettuce nitrate content by about 30%.

A claim from Application of Lavandula angustifolia Essential Oil Enhances Sustainable Baby Lettuce Cultivation · 2026

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Lavender essential oil reduced lettuce nitrate content by about 30%.

Taxon
Baby Lettucet0
Treatment
lavender essential oile0
Outcome
nitrate contente0
Direction
reductione0
Value
30%e0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier

Verbatim

e0

“an approximately 30% reduction in nitrate content when lavender essential oil was applied”

✓ located verbatim in the source · abstract, characters 1406–1495
t0

“Baby Lettuce”

✓ located verbatim in the source · title, characters 73–85

Title

Application of Lavandula angustifolia Essential Oil Enhances Sustainable Baby Lettuce Cultivation

Giovanni Kamal Piga; Marco Cossu; Matteo Garau; et al. Journal of Plant Growth Regulation 2026. doi:10.1007/s00344-026-12175-2

Other claims from this paper (5)

Record rev-e2a0acebbd044091cf6052bbbbb18a735f0c9e1d629d5f0271490f121d3d2efc · schema claims-v0.9 · position 6 in the model’s answer

Lavandula angustifolia · nutrient: content · Lactuca sativa (garden lettuce)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this claim

  1. positive
    Lavender extract increased N content of lettuce by 30.46% relative to control.

    Foliar Spraying of Aqueous Lavender Extract: A Cost-Effective and Sustainable Way to Improve Lettuce Yield and Quality in Organic Farming · 2025 · compared with control

    Same directionCited by this paper

See all 2 papers →

botanical · nutrient: content · Lactuca sativa (garden lettuce)Positive and negative results

19 papers: 18 positive, 1 negative or no effect

17 papers in the same direction as this claim · 1 in the opposite direction

  1. positive
    Lavender extract increased N content of lettuce by 30.46% relative to control.

    Foliar Spraying of Aqueous Lavender Extract: A Cost-Effective and Sustainable Way to Improve Lettuce Yield and Quality in Organic Farming · 2025 · compared with control

    Same directionCited by this paper

  2. no effect
    Most tested elements showed no significant difference in lettuce absorption at the studied amendment rates.

    Comparison between a Traditional (Horse Manure) and a Non-Conventional (Cork Powder) Organic Residue in the Uptake of Potentially Toxic Elements by Lettuce in Contaminated Soils · 2021

    Opposite direction

  3. positive
    PE increased lettuce leaf P by 10% relative to untreated lettuce.

    Appraisal of Biodegradable Mulching Films and Vegetal-Derived Biostimulant Application as Eco-Sustainable Practices for Enhancing Lettuce Crop Performance and Nutritive Value · 2020 · compared with untreated lettuce

    Same direction

  4. positive
    Low-concentration extracts improved soil nutrient availability.

    Heavy metal pollution improves allelopathic effects of Canada goldenrod on lettuce germination · 2020

    Same direction

  5. positive
    Combined seed cake and 10g/L foliar extract produced the lowest nitrate content.

    An attempt to use Moringa products as a natural nutrients source for Lettuce organically production · 2022

    Same direction

  6. positive
    Neem leaf extract generally increased soil K concentration relative to control.

    Effects of Neem Leaf Extract on the Soil Properties, Growth, Yield, and Inorganic Nitrogen Contents of Lettuce · 2022 · compared with control

    Same direction

  7. positive
    Soybean leaf extract increased lettuce magnesium and calcium contents.

    Effects of Biostimulants on Primary and Secondary Substance Contents in Lettuce Plants · 2021

    Same direction

  8. positive
    Alfalfa shoot extract fertilization of lettuce carried no risk of heavy-metal translocation.

    Phytoremediation of Pb and Cd by Alfalfa (Medicago sativa L.): An Applied Study in the Presence of Lettuce Plants (Lactuca sativa L.) · 2022

    Same direction

10 papers more in this group

See all 19 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.