Intervention effectmodel-written summary

Nitrogen fertilizer significantly increased NO and CO fluxes.

A claim from TO EVALUATE THE EFFECT OF GREEN WASTE COMPOST ON NITROUS OXIDE EMISSIONS FROM HORTICULTURE · 2014

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Nitrogen fertilizer significantly increased NO and CO fluxes.

Taxon
lettuceLactuca sativae1
Treatment
N fertiliser (as 3 applications of 50 kg N/ha)e0
Outcome
NO and CO fluxese0
Direction
increasede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Lactuca sativa
Lactuca sativa · Taxonen:User:Geographer · CC BY 1.0 · Wikimedia Commons ↗

Verbatim

e0

“The application of N fertiliser (as 3 applications of 50 kg N/ha) significantly increased NO and CO fluxes”

✓ located verbatim in the source · abstract, characters 1242–1348
e1

“lettuce (Latuca sativa 'Pattagonia')”

✓ located verbatim in the source · abstract, characters 958–994

Title

TO EVALUATE THE EFFECT OF GREEN WASTE COMPOST ON NITROUS OXIDE EMISSIONS FROM HORTICULTURE

S.M. Vaughan; S.M. Harper; R.C. Dalal; et al. Acta Horticulturae 2014. doi:10.17660/actahortic.2014.1018.6

Other claims from this paper (3)

Record rev-e58addb7f0b6eba8d8854e93231e0a9283682c423ab38d56cf74b2cc587e5be9 · schema claims-v0.9 · position 4 in the model’s answer

nitrogen · molecular: metabolites · Lactuca sativa (garden lettuce)Positive and negative results

18 papers: 9 positive, 9 negative or no effect

8 papers in the same direction as this claim · 9 in the opposite direction

  1. positive
    Urea gave the highest lettuce leaf N and K contents.

    Effect of Vermicompost and Compost on Lettuce Production · 2010 · compared with two organic

    Opposite direction

  2. positive
    Azospirillum strains combined with nitrogen augmented lettuce soluble solids, ascorbic acid and phenolics.

    Application of PGPB Combined with Variable N Doses Affects Growth, Yield-Related Traits, N-Fertilizer Efficiency and Nutritional Status of Lettuce Grown under Controlled Condition · 2022

    Opposite direction

  3. positive
    A 130 kg/ha N dose increased P content and accumulation in the first cycle.

    Nutrient content and accumulation in mini lettuce as a function of fertigation management strategies · 2022 · compared with 100

    Opposite direction

  4. positive
    Potassium concentration increased following nitrogen and phosphorus replacement.

    Changes in the Nutrient Components Associated with the Growth of Lettuce in Circulating Hydroponics · 2015

    Opposite direction

  5. positive
    Urea produced the lowest lettuce leaf nitrate content.

    EFFECT OF SOME NITROGEN SOURCES AND POTASSIUM LEVELS ON YIELD, QUALITY AND NITRATE ACCUMULATION IN LETTUCE LEAVES · 2002

    Opposite direction

  6. positive
    Nitrogen application decreased lettuce bromide content in most trials.

    Effect of nitrogen application on the bromide content of lettuce grown under glass · 1985

    Opposite direction

  7. positive
    Romaine lettuce amino acid increased except under H NP.

    Effects of N, P, K combinations on nitrate accumulation and nutrient quality of foliage vegetables grown in soil-less culture · 2004

    Opposite direction

  8. positive
    Extending the last nitrogen application before harvest reduced nitrate concentration in lettuce leaves.

    Effects of nitrogen dose and N-NH4:Ntotal ratio on growth, yield, and quality of greenhouse lettuce across seasons · 2025

    Opposite direction

9 papers more in this group

See all 18 papers →

fertilization · molecular: metabolites · Lactuca sativa (garden lettuce)Positive and negative results

63 papers: 51 positive, 12 negative or no effect

11 papers in the same direction as this claim · 51 in the opposite direction

  1. positive
    Mineral fertilizer under ETc60 produced the highest lettuce leaf K content.

    Effect of Irrigation Water and Organic Fertilizer on Reducing Nitrate Accumulation and Boosting Lettuce Productivity · 2022

    Opposite direction

  2. positive
    Organic fertilization gave higher lettuce leaf Ca, Mg, and Mn.

    Effect of Vermicompost and Compost on Lettuce Production · 2010 · compared with conventional or inorganic

    Opposite direction

  3. positive
    A high calcium proportion increased leaf glucose and fructose concentrations.

    Yield and quality of leafy lettuce in response to nutrient solution composition and growing season · 2009

    Opposite direction

  4. positive
    P fertilization raised glutamine synthetase activity 24% versus control.

    Effects of nitrogen source on growth, nutrition, photosynthetic rate and nitrogen metabolism of mycorrhizal and phosphorus‐fertilized plants of Lactuca sativa L. · 1992 · compared with control plants

    Opposite direction

  5. positive
    Cooling the nutrient solution increased mass accumulation in lettuce.

    Cooling and concentration of nutrient solution in hydroponic lettuce crop · 2013

    Opposite direction

  6. positive
    Three-day deprivation increased sucrose by 38.9%.

    Nutrient Solution Deprivation as a Tool to Improve Hydroponics Sustainability: Yield, Physiological, and Qualitative Response of Lettuce · 2021

    Opposite direction

  7. positive
    Quercetin levels were higher in lettuce plants under mineral fertilised treatment.

    Anti‐inflammatory and antioxidant activity of polyphenolic extracts from Lactuca sativa (var. Maravilla de Verano) under different farming methods · 2016

    Opposite direction

  8. positive
    NPK fertilization significantly increased soil P, K and Na availability in most cases.

    Short Term Effects of Chemical Fertilizer, Compost and Zeolite on Yield of Lettuce, Nutrient Composition and Soil Properties · 2023

    Opposite direction

54 papers more in this group

See all 63 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.