Intervention effectmodel-written summary

Low essential oil doses increased lettuce leaf area and specific leaf area.

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

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Low essential oil doses increased lettuce leaf area and specific leaf area.

Taxon
Baby Lettucet0
Treatment
0.5% and 1.0% essential oile0
Outcome
leaf area, specific leaf areae0
Direction
increasede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Verbatim

e0

“Treatment with 0.5% and 1.0% essential oil significantly increased leaf area, specific leaf area (p < 0.01)”

✓ located verbatim in the source · abstract, characters 956–1063
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-f800255a230c7a466203d74d5f5ab5ac55ea5af60e81759ee7207c383ccea69a · schema claims-v0.9 · position 1 in the model’s answer

botanical · growth · Lactuca sativa (garden lettuce)Positive and negative results

271 papers: 114 positive, 157 negative or no effect

113 papers in the same direction as this claim · 157 in the opposite direction

  1. positive
    Argemone oil significantly inhibited lettuce root growth, germination and shoot growth with IC50 values 92.1, 128.6 and 131.6 µL L−1, respectively.

    Essential Oil Enriched with Oxygenated Constituents from Invasive Plant Argemone ochroleuca Exhibited Potent Phytotoxic Effects · 2020

    Same directionCited by this paper

  2. positive
    Lavender extract increased dry biomass of lettuce.

    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 plants

    Same directionCited by this paper

  3. negative
    Organic solvent extracts of buckwheat aerial parts inhibited root and shoot growth of lettuce seedlings.

    Allelopathic activity of buckwheat: isolation and characterization of phenolics · 2003

    Opposite direction

  4. negative
    Schinus oils affected germination and initial growth of lettuce and onion.

    Essential oils of Schinus terebinthifolius and S. molle (Anacardiaceae): Mitodepressive and aneugenic inducers in onion and lettuce root meristems · 2012

    Opposite direction

  5. negative
    Leaf fresh and dry weight of lettuce decreased after exposure to Acacia melanoxylon aerial foliage, flower and phyllode extracts for 6 days.

    Allelopathic Potential of Aqueous Extract from Acacia melanoxylon R. Br. on Lactuca sativa · 2020

    Opposite direction

  6. negative
    The highest extract concentration reduced lettuce seed germination.

    Cytogenotoxicity of Cymbopogon citratus (DC) Stapf (lemon grass) aqueous extracts in vegetal test systems · 2010

    Opposite direction

  7. no effect
    Extracts generally did not change seedling biomass

    An Assessment of the Allelopathic Potential of the Invasive Weed Alliaria petiolata (Brassicaceae) · 1998

    Opposite direction

  8. negative
    Acacia flower extract at 100%, 75% and 50% decreased L. sativa germination.

    Allelopathic potential of Acacia melanoxylon on the germination and root growth of native species · 2011 · compared with Distilled water

    Opposite direction

262 papers more in this group

See all 271 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.