Search claims · PlantClaims

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 resultnegativesignificant (as stated)measured

Claim · model-written summary

Nickel at 10 mg Ni·kg-1 significantly reduced lettuce usable-part yield.

Taxon: lettuceLactuca sativae0
Treatment: 10 mg Ni·kg-1 substratee0
Outcome: yield of the usable partse0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“The obtained results indicate that even the lowest nickel dose applied (10 mg Ni·kg-1 substrate) has caused a significant decrease of yield of the usable parts of lettuce, spinach, zucchini and bean.”
✓ located verbatim in the source · abstract, characters 452–651

Title

Effect of nickel on yielding and mineral composition of the selected vegetables

Renata Matraszek; Maria Szymaska http://wydawnictwo.up.lublin.pl/acta/hortorum_cultus/2002/acta_hort_1(1)_art_02.pdf 2002. doi:10.24326/asphc.2002.1.2

Other claims from this paper (19)

Intervention effect Nickel at 10 mg Ni·kg-1 significantly reduced spinach usable-part yield.
Intervention effect Nickel at 10 mg Ni·kg-1 significantly reduced zucchini usable-part yield.
Intervention effect Nickel at 10 mg Ni·kg-1 significantly reduced bean usable-part yield.
Intervention effect Higher nickel caused a stronger yield drop in lettuce leaves.
Intervention effect Higher nickel caused a stronger yield drop in spinach leaves.
Observation Under higher nickel, zucchini had no generative yield.
Observation Under higher nickel, bean had no generative yield.
Intervention effect Nickel at 10 mg Ni·kg-1 changed potassium concentration in lettuce.
Intervention effect Nickel at 10 mg Ni·kg-1 changed phosphorus in spinach.
Intervention effect Nickel at 10 mg Ni·kg-1 changed phosphorus and potassium concentration in zucchini.
Intervention effect Nickel at 10 mg Ni·kg-1 changed phosphorus and potassium concentration in bean.
Intervention effect Nickel at 10 mg Ni·kg-1 changed magnesium content in zucchini.
Intervention effect Nickel at 10 mg Ni·kg-1 changed Mg concentration in bean.
Intervention effect Nickel at 10 mg Ni·kg-1 changed iron in spinach leaves.
Intervention effect Nickel at 10 mg Ni·kg-1 changed iron in zucchini fruits.
Intervention effect Nickel at 10 mg Ni·kg-1 changed iron in bean pods.
Intervention effect Nickel at 10 mg Ni·kg-1 changed iron in lettuce biomass.
Intervention effect Higher nickel significantly reduced Fe concentration in vegetable usable organs.
Association Increasing substrate nickel raised nickel content in vegetable usable organs.

Associationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Ascorbic acid concentration significantly decreased with decreasing incident light intensity.

Taxon: Lactuca sativa L.Lactuca sativae0
Treatment: incident light intensity decreasee3
Outcome: ascorbic acid concentratione3
Direction: decreasede3

Verbatim

e0
“lettuce (Lactuca sativa L. cv. Parris Island)”
✓ located verbatim in the source · abstract, characters 160–205

e3
“the nutritional value (ascorbic acid concentration) was also significantly decreased in relation to incident light intensity decrease”
✓ located verbatim in the source · abstract, characters 710–843

Title

Yield and nutritional quality of greenhouse lettuce as affected by shading and cultivation season

C Kosma; V Triantafyllidis; A Papasavvas; et al. Emirates Journal of Food and Agriculture 2013. doi:10.9755/ejfa.v25i12.16738

Other claims from this paper (5)

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Transparent film significantly decreased nitrate content in lettuce heads versus control.

Taxon: lettuceLactuca sativae0
Organ / stage: headse0
Treatment: transparente0
Outcome: nitrate contente0
Direction: decreasee0
Comparator: control treatmente0

Verbatim

e0
“Soil mulching with transparent and white film, regardless of the material it was made from, had significant effect on nitrate content decrease in lettuce heads in comparison with the control treatment.”
✓ located verbatim in the source · abstract, characters 462–663

Title

Effect of mulching with various films on the yield quality of butterhead lettuce and celery stalks with special reference to nitrate metabolism

Renata Wojciechowska; P. Siwek; A. Libik Folia Horticulturae 2007

Other claims from this paper (7)

Intervention effect Mulched lettuce had lower levels of five quality constituents than unmulched plants.
Intervention effect Mulched celery had lower levels of five quality constituents than unmulched plants.
Intervention effect White film significantly decreased nitrate content in lettuce heads versus control.
Intervention effect Celery stalks under white films accumulated the least nitrates.
Intervention effect Black films produced the highest nitrate content in lettuce.
Intervention effect Black films produced the highest nitrate content in celery.
Intervention effect Original film yielded better celery stalk quality than recycled film.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

White film significantly decreased nitrate content in lettuce heads versus control.

Taxon: lettuceLactuca sativae0
Organ / stage: headse0
Treatment: white filme0
Outcome: nitrate contente0
Direction: decreasee0
Comparator: control treatmente0

Verbatim

e0
“Soil mulching with transparent and white film, regardless of the material it was made from, had significant effect on nitrate content decrease in lettuce heads in comparison with the control treatment.”
✓ located verbatim in the source · abstract, characters 462–663

Title

Effect of mulching with various films on the yield quality of butterhead lettuce and celery stalks with special reference to nitrate metabolism

Renata Wojciechowska; P. Siwek; A. Libik Folia Horticulturae 2007

Other claims from this paper (7)

Intervention effect Mulched lettuce had lower levels of five quality constituents than unmulched plants.
Intervention effect Mulched celery had lower levels of five quality constituents than unmulched plants.
Intervention effect Transparent film significantly decreased nitrate content in lettuce heads versus control.
Intervention effect Celery stalks under white films accumulated the least nitrates.
Intervention effect Black films produced the highest nitrate content in lettuce.
Intervention effect Black films produced the highest nitrate content in celery.
Intervention effect Original film yielded better celery stalk quality than recycled film.

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Zeolite application decreased manganese, boron and molybdenum in lettuce edible parts.

Taxon: lettuceLactuca sativae1
Treatment: application of zeolitee0
Outcome: levels of manganese, boron, and molybdenume0
Direction: decreasee0

Verbatim

e0
“a statistically significant relationship was observed between the application of zeolite and the increase in the iron, copper and zinc content, along with the decrease in the levels of manganese, boron, and molybdenum in the edible parts of the test plant.”
✓ located verbatim in the source · abstract, characters 1278–1534

e1
“lettuce seedlings (Lactuca sativa var. capitata)”
✓ located verbatim in the source · abstract, characters 115–163

Title

The effect of zeolite on yield of Lactuca sativa var. capitata and chemical composition

Kamila Adamczyk-Mucha; Halina Lipińska; Wojciech Lipiński; et al. Journal of Water and Land Development 2025. doi:10.24425/jwld.2025.155309

Other claims from this paper (8)

Intervention effect Zeolite significantly improved lettuce seed germination and emergence.
Association Increasing zeolite increased lettuce leaf yield and root biomass.
Intervention effect Zeolite significantly reduced cadmium and lead concentrations in lettuce leaves.
Intervention effect Zeolite at 10 g per kilogram reduced nitrate content in lettuce leaves.
Intervention effect Higher zeolite doses increased nitrate content in lettuce leaves.
Intervention effect Zeolite had no effect on lettuce leaf flavonoids, anthocyanins or polyphenols.
Intervention effect Zeolite had no effect on lettuce leaf primary nutrient concentrations.
Association Zeolite application increased iron, copper and zinc in lettuce edible parts.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

In 1994, Fluazinam and Topsin M significantly increased marketable lettuce yield compared with no treatment.

Taxon: lettuceLactuca sativae0
Treatment: Fluazinam and Topsin Me1
Interactor: Sclerotinia minorSclerotinia minore1pathogen
Second interactor: S. sclerotiorumSclerotinia sclerotiorume1pathogen
Outcome: marketable yielde1
Direction: increasee1
Comparator: no treatmente1

Verbatim

e0
“Leaf drop of lettuce is caused by the plant pathogenic fungi Sclerotinia minor and S. sclerotiorum”
✓ located verbatim in the source · abstract, characters 0–98

e1
“In the 1994 trial, Fluazinam and Topsin M provided significant decrease of disease and significant increase inmarketable yield compared to no treatment in plots infested with Sclerotinia minor or S. sclerotiorum.”
✓ located verbatim in the source · abstract, characters 269–481

Title

Field Evaluation of Potential New Fungicides for Control of Sclerotinia Leaf Drop of Lettuce in 1994 and 1995

Michael E. Matheron; I. J. Misaghi; Martin Porchas; et al. UA Campus Repository (The University of Arizona) 1995

Other claims from this paper (5)

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

In 1994, Fluazinam and Topsin M significantly decreased lettuce disease compared with no treatment in plots infested with Sclerotinia minor or S. sclerotiorum.

Taxon: lettuceLactuca sativae0
Treatment: Fluazinam and Topsin Me1
Interactor: Sclerotinia minorSclerotinia minore1pathogen
Second interactor: S. sclerotiorumSclerotinia sclerotiorume1pathogen
Outcome: diseasee1
Direction: decreasee1
Comparator: no treatmente1

Verbatim

e0
“Leaf drop of lettuce is caused by the plant pathogenic fungi Sclerotinia minor and S. sclerotiorum”
✓ located verbatim in the source · abstract, characters 0–98

e1
“In the 1994 trial, Fluazinam and Topsin M provided significant decrease of disease and significant increase inmarketable yield compared to no treatment in plots infested with Sclerotinia minor or S. sclerotiorum.”
✓ located verbatim in the source · abstract, characters 269–481

Title

Field Evaluation of Potential New Fungicides for Control of Sclerotinia Leaf Drop of Lettuce in 1994 and 1995

Michael E. Matheron; I. J. Misaghi; Martin Porchas; et al. UA Campus Repository (The University of Arizona) 1995

Other claims from this paper (5)

Intervention effect In 1994, Fluazinam and Topsin M significantly increased marketable lettuce yield compared with no treatment.
Intervention effect In 1995, Fluazinam and Topsin M significantly reduced disease caused by Sclerotinia minor compared with nontreated plots.
Intervention effect In 1995, two compounds from Ciba significantly reduced disease caused by Sclerotinia minor compared with nontreated plots.
Intervention effect In 1995, Fluazinam and Topsin M increased marketable lettuce yield compared with nontreated plots.
Intervention effect In 1995, two compounds from Ciba increased marketable lettuce yield compared with nontreated plots.

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Spraying the lupine extract was accompanied by a significant increase in total nitrogen content

Taxon: cauliflower and lettuceBrassica oleracea var. botrytis Lactuca sativat0
Treatment: spray with the lupine extracte4
Outcome: content of total nitrogene4
Direction: increasee4

Not reportedComparator

Verbatim

t0
“The yield and chemical composition of cauliflower and lettuce”
✓ located verbatim in the source · title, characters 0–61

e4
“The decrease in the N-NO3 content caused by the spray with the lupine extract was accompanied by a significant increase in the content of total nitrogen”
✓ located verbatim in the source · abstract, characters 1204–1356

Title

The yield and chemical composition of cauliflower and lettuce depending on the lupine extract applied and the type of nitrogen fertilizer

B. Barczak; K. Nowak 2005

Other claims from this paper (10)

Intervention effect The 5 kg d.m./ha lupine extract dosage had a significant effect on the volume crop of cauliflower
Intervention effect Both applied dosages of lupine extract affected the contents of dry matter and N-NO3 in the vegetables
Intervention effect Lupine extract at 3 kg d.m./ha reduced the content of this nitrogen form in cauliflower roses by 14.5 percent relative to control
Intervention effect Lupine extract at 5 kg d.m./ha reduced the content of this nitrogen form in cauliflower roses by 19.1 percent relative to control
Intervention effect Lupine extract at 3 kg d.m./ha reduced the content of this nitrogen form in lettuce leaves by 28.9 percent relative to control
Intervention effect Lupine extract at 5 kg d.m./ha reduced the content of this nitrogen form in lettuce leaves by 18.3 percent relative to control
Intervention effect The lupine extract spray did not significantly differentiate sodium content in both vegetables
Intervention effect The lupine extract spray did not significantly differentiate potassium and calcium in cauliflower roses
Intervention effect Nitrogen fertilization increased the crop of both vegetables
Intervention effect Nitrogen fertilization increased the contents of total nitrogen and N-NO3 in both vegetables

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Moskovsky parnikovy yield significantly increased.

Taxon: lettuceLactuca sativat0
Material: Moskovsky parnikovye0
Treatment: seed space storagee1
Outcome: yielde0
Direction: increasee0

Not reportedComparator

Verbatim

e0
“Significant yield increase was recorded for the cv. Moskovsky parnikovy”
✓ located verbatim in the source · abstract, characters 785–856

e1
“Improvement of photosynthetic pigment accumulation due to seed space storage was recorded for the cv. Moskovsky parnikovy”
✓ located verbatim in the source · abstract, characters 952–1073

e2
“only the cvs. Retrovich, Synthesis, Moskovsky parnikovy and Picnik retained seed viability”
✓ located verbatim in the source · abstract, characters 693–783

e3
“the latter cultivar differed from the other cvs. due to the significantly higher proline level and lower MDA levels in leaves”
✓ located verbatim in the source · abstract, characters 1093–1218

e4
“space stress did not cause any significant decrease in antioxidant accumulation of plants”
✓ located verbatim in the source · abstract, characters 1227–1316

t0
“lettuce Lactuca sativa L.”
✓ located verbatim in the source · title, characters 56–81

Title

Peculiarities of biochemical and mineral composition of lettuce Lactuca sativa L. grown from seeds after long-term storage in the International Space Station

V. A. Kharchenko; N. А. Golubkina; L. N. Skrypnik; et al. VEGETABLE CROPS OF RUSSIA 2024. doi:10.18619/2072-9146-2024-2-37-42

Other claims from this paper (8)

Observation Only four named cultivars retained seed viability after storage.
Intervention effect Petrovich, Synthesis and Picnic tended toward lower yield.
Intervention effect Seed space storage improved photosynthetic pigment accumulation in Moskovsky parnikovy.
Observation Moskovsky parnikovy leaves had higher proline than other cultivars.
Observation Moskovsky parnikovy leaves had lower MDA than other cultivars.
Intervention effect Space stress caused no significant decrease in antioxidant accumulation.
Intervention effect V, Se, Fe and Cr concentrations were higher than in controls.
Association Ca, Sr, Cd, Cp, Mg, Mo and Pb were positively correlated.

“yield decrease”

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