Search claims · PlantClaims

Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Coir-based growing media can be reused for another short-cycle crop such as lettuce without yield loss or phytonutrient decrease.

Taxon: lettuceLactuca sativae0
Outcome: without yield loss or phytonutrients decreasee0

Verbatim

e0
“Coir-based growing media can be reused for another short-cycle crop, like lettuce, without yield loss or phytonutrients decrease”
✓ located verbatim in the source · abstract, characters 1099–1227

Title

Reusing Coir-Based Substrates for Lettuce Growth: Nutrient Content and Phytonutrients Accumulation

Rui Machado; Isabel Alves-Pereira; Inês Alves; et al. Horticulturae 2023. doi:10.3390/horticulturae9101080

Other claims from this paper (6)

Intervention effect Lettuce grown in reused mixes had macronutrient concentrations similar to those grown in coir for the first time.
Intervention effect N and K concentrations differed from those in new coir in plants grown in the third reused mix (coir, biochar and pine bark).
Intervention effect Lettuce grown in reused mixtures had yields similar to those in new coir.
Observation Lettuce heads yielded 4.6–4.9 kg/m2.
Intervention effect Plants grown in reused mixtures had equal or higher total phenols than those in new coir.
Intervention effect Ascorbic acid content was higher in plants cultivated in reused mixes.

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Cadmium application did not significantly decrease lettuce crop yield.

Taxon: lettuceLactuca sativae1
Treatment: 20 kg Cd ha(-1) applicatione0
Outcome: crop yielde0
Direction: did not result in a significant decreasee0

Not reportedComparator

Verbatim

e0
“20 kg Cd ha(-1) application did not result in a significant decrease in crop yield”
✓ located verbatim in the source · abstract, characters 429–511

e1
“lettuce plant and soil”
✓ located verbatim in the source · abstract, characters 248–270

Title

EFFECTS OF IRON APPLICATION AGAINST CADMIUM TOXICITY ON GROWTH AND ANTI-OXIDATIVE ENZYME ACTIVITY IN LETTUCE

Boysan Canal, Sibel; Bozkurt, Mehmet Ali Van Yüzüncü Yıl University Academic Data Management System 2017

Other claims from this paper (12)

Intervention effect Cadmium toxicity significantly increased lettuce APX activity.
Intervention effect Cadmium toxicity significantly increased lettuce SOD activity.
Intervention effect Iron application substantially decreased lettuce SOD activity.
Intervention effect Sewage sludge application substantially decreased lettuce SOD activity.
Intervention effect Cadmium application significantly increased soil DTPA-Cd.
Intervention effect Cadmium application significantly increased plant DTPA-Cd.
Intervention effect Applying 50 kg Fe ha(-1) to cadmium-contaminated soil decreased soil DTPA-Cd.
Intervention effect Sewage sludge reduced soil cadmium concentration compared with cadmium application alone.
Intervention effect Sewage sludge reduced plant cadmium concentration compared with cadmium application alone.
Recommendation The authors conclude that iron can alleviate cadmium toxicity.
Mechanism The authors conclude that urban sewage sludge did not cause severe toxicity because its heavy-metal content was low.
Mechanism The authors conclude that sewage sludge can inhibit cadmium intake because of its organic matter content.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Foliar peptide fertilizers caused no fresh shoot yield change or a slight decrease with Zn-peptide.

Taxon: lettuceLactuca sativat0
Treatment: Zn-peptide treatmente0
Outcome: fresh shoot yielde0
Direction: slight decreasee0

Not reportedComparator

Verbatim

t0
“lettuce”
✓ located verbatim in the source · title, characters 121–128

e0
“foliar treatments with peptides-based fertilizers induced no fresh shoot yield variations or a slight decrease in the case of Zn-peptide treatment”
✓ located verbatim in the source · abstract, characters 428–574

Title

Foliarly applied biochelates as an eco-friendly strategy for biofortification with iron and zinc of hydroponically grown lettuce

Iqra Bashir; Marzia Leporino; José Carlos Laban Lliuya; et al. Scientia Horticulturae 2026. doi:10.1016/j.scienta.2026.114965

Other claims from this paper (15)

Intervention effect Fe-peptide increased lettuce leaf iron concentration by up to 690% versus control.
Intervention effect Zn-peptide increased lettuce leaf zinc concentration by 222% versus control.
Observation Fertilizers induced cultivar-specific changes in primary and secondary metabolism.
Intervention effect Aquino shoot fresh weight and root fresh and dry weight increased, especially with peptide and Zn-peptide.
Observation Aquino leaf total amino acids, vitamin C, and soluble carbohydrates increased.
Observation Barlack had a stronger antioxidant response, DPPH activity, and higher leaf flavonoids and anthocyanins.
Intervention effect Peptide fertilizers reduced soluble carbohydrates and total anthocyanins in both cultivars.
Intervention effect Peptide fertilizers reduced vitamin C in Aquino leaves.
Intervention effect Peptide fertilizers reduced amino acids in Barlack leaves.
Intervention effect Peptide treatment increased amino acids in Aquino leaves.
Intervention effect Zinc peptide reduced Barlack shoot dry biomass.
Intervention effect Zinc peptide reduced Barlack leaf total phenol and antioxidant activity.
Intervention effect Zn-peptide and peptide treatments reduced leaf phosphorus in both cultivars.
Intervention effect Zn-peptide and peptide treatments increased leaf boron concentration in both cultivars.
Recommendation The authors support cultivar-specific peptide biochelates for targeted lettuce biofortification.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing NaOCl concentration made lettuce yield decrease more.

Taxon: lettuceLactuca sativat0
Treatment: increasing NaOCl concentratione5
Outcome: lettuce yielde5
Direction: more decreasede5

Verbatim

t0
“Lettuce Cultivation in Hydroponics”
✓ located verbatim in the source · title, characters 38–72

e5
“With increasing NaOCl concentration, lettuce yield became more decreased”
✓ located verbatim in the source · abstract, characters 1026–1098

Title

Inhibition of Algae Occurrence during Lettuce Cultivation in Hydroponics by NaOCl and Several Treatments

S.W. Lee; S.Y. Lee; Marselina Seo Horticultural Science and Technology 2004

Other claims from this paper (10)

Intervention effect Black and white film mulching completely controlled algae in hydroponic lettuce.
Intervention effect 100ppm humus completely controlled algae in hydroponic lettuce.
Intervention effect Black and white film mulching inhibited lettuce growth.
Intervention effect NaOCl inhibited algae occurrence by 95% compared with control.
Intervention effect NaOCl increased lettuce yield by 20% compared with control.
Intervention effect NaOCl at 12 and 24 ppm increased lettuce fresh weight in the first culture compared with control.
Intervention effect NaOCl at 24 and 48 ppm severely decreased lettuce fresh weight in the second culture.
Association NaOCl treatment increased Na and Cl absorption by lettuce.
Association NaOCl treatment inhibited absorption of Ca, K and P by lettuce.
Intervention effect NaOCl treatment reduced the bacteria population in the nutrient solution.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Iso-osmotic salt concentrations caused only a moderate decrease of fresh yield in lettuce

Taxon: lettuceLactuca sativae1
Treatment: iso-osmotic salt concentrationse5
Outcome: fresh yielde5
Direction: moderate decreasee5
Qualifier: onlye5

Verbatim

e1
“green and red lettuce (Lactuca sativa L.) plants”
✓ located verbatim in the source · abstract, characters 478–526

e5
“The treatments with iso-osmotic salt concentrations did not affect K and Mg ion contents but further increased LAA and resulted only in a moderate decrease of fresh yield”
✓ located verbatim in the source · abstract, characters 1551–1721

Title

Regulated Salinity Eustress in a Floating Hydroponic Module of Sequentially Harvested Lettuce Modulates Phytochemical Constitution, Plant Resilience, and Post-Harvest Nutraceutical Quality

Petronia Carillo; Georgios A. Soteriou; Marios C. Kyriacou; et al. Agronomy 2021. doi:10.3390/agronomy11061040

Other claims from this paper (8)

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Reduced irrigation significantly decreased marketable lettuce yield.

Taxon: LETTUCELactuca sativat0
Treatment: Reducing irrigatione0
Outcome: marketable yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Reducing irrigation had resulted in significant decrease of marketable yield”
✓ located verbatim in the source · abstract, characters 999–1075

t0
“LETTUCE”
✓ located verbatim in the source · title, characters 39–46

Title

EFFECTS OF MICRO-IRRIGATION SYSTEMS ON LETTUCE PRODUCTION

Jutka Deak; V. Budiu; Marcel Dîrja Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca Horticulture 2008. doi:10.15835/buasvmcn-hort:558

Other claims from this paper (6)

Intervention effect Drip irrigation had higher lettuce water use efficiency than micro-sprinkler irrigation.
Intervention effect Drip irrigation decreased water consumption while maintaining moisture for lettuce growth and yield.
Intervention effect Reduced irrigation decreased crop water use.
Intervention effect Water deficit reduced fresh weight of individual lettuces by an average of 20 to 30%.
Intervention effect Water deficit reduced dry matter of individual lettuces by an average of 20 to 30%.
Intervention effect Stressed lettuce treatments significantly reduced leaf number per head.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Green or food waste compost treatments tended to reduce lettuce yield slightly.

Taxon: lettuceLactuca sativat0
Treatment: green waste or food waste compostse0
Outcome: Yielde0
Direction: decreasee0
Qualifier: tended to decrease slightlye0

Not reportedComparator

Verbatim

e0
“Yield in treatments that received green waste or food waste composts tended to decrease slightly”
✓ located verbatim in the source · abstract, characters 1054–1150

t0
“lettuce”
✓ located verbatim in the source · title, characters 86–93

Title

Using bio-based fertilizer derived from peri‑urban wastes affects soil properties and lettuce yield and quality

Lelenda Florent Kebalo; Patricia Garnier; Laure Vieublé Gonod; et al. Scientia Horticulturae 2023. doi:10.1016/j.scienta.2023.112599

Other claims from this paper (9)

Intervention effect Fertilized treatments had statistically similar lettuce fresh yields after 48 days.
Intervention effect All fertilized treatments yielded more lettuce than the unfertilized control.
Intervention effect Manure plus synthetic fertilizer produced the highest fresh lettuce yield, 73 t ha−1.
Mechanism The authors suggest nitrogen immobilization and low initial mineral N likely explain the lower yields with compost.
Observation Lettuce leaf nitrate content was below the EU limit in every treatment.
Observation Pathogen analysis of aboveground lettuce showed no significant risk.
Observation Trace element analysis of aboveground lettuce showed no significant risk.
Intervention effect BBF application appeared to maintain soil pH relative to synthetic fertilizer.
Recommendation The authors suggest BBFs for vegetable production and increasing soil carbon stocks.

Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

NaN03-soluble soil nickel better predicted lettuce yield decrease than total or CaCl2-soluble soil nickel.

Taxon: lettuceLactuca sativae0
Treatment: NaN03‐soluble soil Nie0
Outcome: decrease in yielde0
Direction: better suitede0
Qualifier: irrespective of soil typee0
Comparator: total soil Ni (Added+ Native) and CaCl2 soluble soil Nie0

Verbatim

e0
“NaN03‐soluble soil Ni, irrespective of soil type, is better suited to predict the decrease in yield and increase in Ni‐concentration of lettuce leaves as compared to total soil Ni (Added+ Native) and CaCl2 soluble soil Ni.”
✓ located verbatim in the source · abstract, characters 489–711

Title

The effect of graded doses of nickel on the yield, the nickel content of lettuce and the soil respiration

S.K. Gupta; H. Hani; E. Santschi; et al. Toxicological & Environmental Chemistry Reviews 1987. doi:10.1080/02772248709357189

Other claims from this paper (4)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Reducing nitrogen from N90 to N60 did not decrease lettuce yield.

Taxon: LettuceLactuca sativat0
Treatment: N60e0
Outcome: crop yielde0
Direction: without decreasinge0
Comparator: N90 treatmente0

Verbatim

e0
“Compared to the N90 treatment, N2O emission of N60 was reduced by 42% in loam soil and 30% in deep sandy soil without decreasing crop yield.”
✓ located verbatim in the source · abstract, characters 1011–1151

t0
“Lettuce”
✓ located verbatim in the source · title, characters 64–71

Title

Nitrogen Fertilization Management and Nitrous Oxide Emission in Lettuce Vegetable Fields in Central Vietnam

Hoang . International Journal of Agriculture and Biology 2018. doi:10.17957/ijab/15.0484

Other claims from this paper (9)

Association Cumulative N2O emissions increased in proportion to nitrogen fertilizer application.
Association Yield-based N2O intensity increased in proportion to nitrogen fertilizer application.
Intervention effect Calcium nitrate at 90 kg N ha -1 had the highest N2O emissions, 1.20 to 1.82 times ammonium sulfate.
Intervention effect Calcium nitrate at 90 kg N ha -1 had the highest N2O emissions, 1.60 to 1.91 times urea.
Intervention effect Reducing nitrogen from N90 to N60 cut N2O emissions by 42% in loam soil.
Intervention effect Reducing nitrogen from N90 to N60 cut N2O emissions by 30% in deep sandy soil.
Observation Growing-season N2O emission factors ranged from 0.40% to 0.61% of added nitrogen.
Association Growing-season N2O emission factors increased with nitrogen fertilizer rate.
Association N2O fluxes fell significantly as applied nitrogen fertilizer amounts decreased.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Excessively high nitrogen rates decreased lettuce yield.

Taxon: LettuceLactuca sativat0
Treatment: excessively high N ratese0
Outcome: yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“excessively high N rates could decrease its yield”
✓ located verbatim in the source · abstract, characters 243–292

t0
“Lettuce”
✓ located verbatim in the source · title, characters 64–71

Title

Effects of N Application Rates on Yield,Nitrate Accumulation of Lettuce and EC,pH Value of Soil

Gao Yu-hong 2007

Other claims from this paper (6)

Intervention effect Suitable nitrogen fertilizer increased lettuce yield.
Association Nitrate accumulation correlated significantly with nitrogen rate, with coefficient 0.9914.
Mechanism Excessive nitrogen rates were identified as the main reason for nitrate accumulation.
Intervention effect At nitrogen rates over 300kg/hm2, soil EC rose significantly.
Intervention effect At nitrogen rates over 300kg/hm2, soil pH rose significantly.
Recommendation The authors recommend a nitrogen rate below 300kg/hm2 in the greenhouse.

“yield decrease”

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