Search claims · PlantClaims

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The decline in top growth rate was attributed to fewer leaves reducing blade dry weight.

Taxon: OnionAllium cepat0
Outcome: decrease in the dry weight of the leaf bladese0
Qualifier: decrease in leaf numbere0

Verbatim

e0
“which was due to a decrease in the dry weight of the leaf blades caused by decrease in leaf number.”
✓ located verbatim in the source · abstract, characters 739–838

t0
“Onion”
✓ located verbatim in the source · title, characters 61–66

Title

The Pattern of Dry‐Matter Distribution during Development in Onion

D. N. Iortsuun; A. A. Khan Journal of Agronomy and Crop Science 1989. doi:10.1111/j.1439-037x.1989.tb00698.x

Other claims from this paper (10)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Hydrocortisone decreased Allium cepa root length and dry weight.

Taxon: Allium cepaAllium cepae0
Organ / stage: rootse0
Treatment: hydrocortisonee0
Outcome: length and dry weighte0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“hydrocortisone treatment resulted in a considerable decrease of the length and dry weight of Allium cepa roots”
✓ located verbatim in the source · abstract, characters 381–491

Title

Inhibitory effect of adrenaline and hydrocortisone on the growth of Allium cepa roots.

J Kanta; E Sichová; I Pejsková; et al. PubMed 1977

Other claims from this paper (3)

Intervention effect Adrenaline decreased Allium cepa root length, number and dry weight.
Intervention effect Adrenaline reduced root DNA less than extracellular root components.
Intervention effect Hydrocortisone influenced root DNA and extracellular components.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Increasing irrigation salinity decreased onion dry weight, bulb weight and total yield.

Taxon: OnionAllium cepat0
Treatment: increasing levels of salinity of irrigation watere0
Outcome: dry weight, bulb weight, total yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“increasing levels of salinity of irrigation water caused a significant decrease in soil reaction degree, soil organic matter content, dry weight, bulb weight, total yield, and NPK absorbed by the plant”
✓ located verbatim in the source · abstract, characters 1169–1370

t0
“Onion”
✓ located verbatim in the source · title, characters 113–118

Title

Role of Conocarpus Lancifolius Residues on Some Soil Chemical Properties, NPK Concentration, Growth and Yield of Onion Under Different Water Salinity Levels

Hussam Y. Khodier; Kamal H. Al-Dulaimi; Bassam R. Sarheed IOP Conference Series Earth and Environmental Science 2025. doi:10.1088/1755-1315/1487/1/012074

Other claims from this paper (7)

Intervention effect Increasing Conocarpus residues increased soil organic matter.
Intervention effect Increasing Conocarpus residues increased onion dry weight, bulb weight and total yield.
Intervention effect Increasing Conocarpus residues increased plant NPK uptake.
Intervention effect Increasing Conocarpus residues decreased soil electrical conductivity and pH.
Intervention effect Increasing irrigation salinity decreased soil pH and organic matter.
Intervention effect Increasing irrigation salinity decreased onion NPK uptake.
Intervention effect Measured characteristics were lower at 30-15 cm than 0-15 cm.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

SB20/13 reduced onion bulb dry weight in experiment two.

Taxon: onionAllium cepat0
Treatment: SB20/13e0
Outcome: dry weighte0
Direction: decreasee0
Value: 1.3-1.7%e0
Comparator: controle0

Verbatim

e0
“Covering with nonwovens caused a decrease in dry weight (SB20/13 and SB21/13, by 1.3-1.7%, respectively) and L-ascorbic acid (all nonwovens, by 15.6% for SB21/13 up to 22% for SB20/13) in onion bulbs in comparison to the control.”
✓ located verbatim in the source · abstract, characters 1409–1638

t0
“overwintering onion”
✓ located verbatim in the source · title, characters 77–96

Title

Effect of biodegradable nonwoven covers on yield and chemical composition of overwintering onion

Andrzej Kalisz; Agnieszka Sękara; Andrzej Jurkow; et al. Italus Hortus 2020. doi:10.26353/j.itahort/2020.1.4154

Other claims from this paper (12)

Intervention effect SB21/13 increased marketable onion yield by 24% in experiment one.
Intervention effect SB21/13 increased onion harvest index by 3% in experiment one.
Intervention effect SB20/13 decreased mean onion bulb weight by 15.3% relative to control.
Intervention effect SB21/13 produced onion bulbs with 3.2-3.7% lower dry weight.
Intervention effect SB28/13 produced the lowest bulb L-ascorbic acid content, 6.3-10.3% below other treatments.
Intervention effect SB20/13 onion bulbs contained 10.6% more sugar than controls.
Intervention effect SB28/13 raised first-grade onion yield by 47% in experiment two.
Intervention effect SB21/13 had the highest mean bulb weight in experiment two.
Intervention effect SB21/13 reduced onion bulb dry weight in experiment two.
Intervention effect SB21/13 reduced bulb L-ascorbic acid by 15.6%.
Intervention effect SB20/13 reduced bulb L-ascorbic acid by 22%.
Recommendation The authors consider biodegradable nonwoven covers suitable for open-field winter onion cultivation because yield was not reduced relative to polypropylene.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

SB21/13 reduced onion bulb dry weight in experiment two.

Taxon: onionAllium cepat0
Treatment: SB21/13e0
Outcome: dry weighte0
Direction: decreasee0
Value: 1.3-1.7%e0
Comparator: controle0

Verbatim

e0
“Covering with nonwovens caused a decrease in dry weight (SB20/13 and SB21/13, by 1.3-1.7%, respectively) and L-ascorbic acid (all nonwovens, by 15.6% for SB21/13 up to 22% for SB20/13) in onion bulbs in comparison to the control.”
✓ located verbatim in the source · abstract, characters 1409–1638

t0
“overwintering onion”
✓ located verbatim in the source · title, characters 77–96

Title

Effect of biodegradable nonwoven covers on yield and chemical composition of overwintering onion

Andrzej Kalisz; Agnieszka Sękara; Andrzej Jurkow; et al. Italus Hortus 2020. doi:10.26353/j.itahort/2020.1.4154

Other claims from this paper (12)

Intervention effect SB21/13 increased marketable onion yield by 24% in experiment one.
Intervention effect SB21/13 increased onion harvest index by 3% in experiment one.
Intervention effect SB20/13 decreased mean onion bulb weight by 15.3% relative to control.
Intervention effect SB21/13 produced onion bulbs with 3.2-3.7% lower dry weight.
Intervention effect SB28/13 produced the lowest bulb L-ascorbic acid content, 6.3-10.3% below other treatments.
Intervention effect SB20/13 onion bulbs contained 10.6% more sugar than controls.
Intervention effect SB28/13 raised first-grade onion yield by 47% in experiment two.
Intervention effect SB21/13 had the highest mean bulb weight in experiment two.
Intervention effect SB20/13 reduced onion bulb dry weight in experiment two.
Intervention effect SB21/13 reduced bulb L-ascorbic acid by 15.6%.
Intervention effect SB20/13 reduced bulb L-ascorbic acid by 22%.
Recommendation The authors consider biodegradable nonwoven covers suitable for open-field winter onion cultivation because yield was not reduced relative to polypropylene.

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Epicuticular wax per dry weight decreased significantly between late one-leaf and late two-leaf stages in both field and growth room.

Taxon: onionAllium cepae1
Organ / stage: late two-leaf stagese0
Outcome: epicuticular wax per unit dry weighte0
Direction: decreasee0
Comparator: late one-leafe0
Setting: field and growth room conditionse0

Verbatim

e0
“A significant decrease in epicuticular wax per unit dry weight between the late one-leaf and late two-leaf stages occurred under both field and growth room conditions”
✓ located verbatim in the source · abstract, characters 811–977

e1
“tolerance of onion seedlings to the herbicide”
✓ located verbatim in the source · abstract, characters 401–446

e2
“between the late one-leaf and late two-leaf stages”
✓ located verbatim in the source · abstract, characters 874–924

Title

RESPONSE OF ONION (Allium cepa) TO OXYFLUORFEN DURING EARLY SEEDLING DEVELOPMENT

W. C. AKEY; V. SOUZA MACHADO Canadian Journal of Plant Science 1985. doi:10.4141/cjps85-050

Other claims from this paper (6)

Associationobservedoriginal resultmeasured

Claim · model-written summary

Epicuticular wax per unit dry weight increased as onion seedlings aged in general.

Taxon: onionAllium cepae1
Organ / stage: plant agee0
Outcome: epicuticular wax per unit dry weighte0
Direction: increasee0

Verbatim

e0
“there was a progressive decrease in spray retention and a corresponding increase in epicuticular wax per unit dry weight as plant age increased”
✓ located verbatim in the source · abstract, characters 460–603

e1
“tolerance of onion seedlings to the herbicide”
✓ located verbatim in the source · abstract, characters 401–446

e2
“between the late one-leaf and late two-leaf stages”
✓ located verbatim in the source · abstract, characters 874–924

Title

RESPONSE OF ONION (Allium cepa) TO OXYFLUORFEN DURING EARLY SEEDLING DEVELOPMENT

W. C. AKEY; V. SOUZA MACHADO Canadian Journal of Plant Science 1985. doi:10.4141/cjps85-050

Other claims from this paper (6)

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Reducing irrigation from 100% to 50% of the water supply decreased onion dry mass, leaf iron content and average bulb weight.

Taxon: onionAllium cepae2
Treatment: reducing irrigation levels from 100 to 50% of the water supplye1
Outcome: dry mass, iron content in the leaves, the average weight of bulbse1
Direction: decreasee1
Comparator: 100e1
Setting: Fallujah, Iraqe0

Verbatim

e0
“A field experiment was conducted in Fallujah, Iraq during the autumn season in 2019”
✓ located verbatim in the source · abstract, characters 89–172

e1
“The results show a significant decrease in plant height, number of bulbs, total chlorophyll content, dry mass, iron content in the leaves, the average weight of bulbs and total yield of bulbs by reducing irrigation levels from 100 to 50% of the water supply”
✓ located verbatim in the source · abstract, characters 571–828

e2
“yield of onion (Allium cepa L.)”
✓ located verbatim in the source · abstract, characters 277–308

Title

Response of onion growth and yield grown in soils of semi-arid regions to foliar application of iron under water stress conditions

Gar, Laith Farhan; Bader, Basem Rahem; Al-Esawi, Jabbar Shihab Eyada; et al. DOAJ (DOAJ: Directory of Open Access Journals) 2021. doi:10.15159/jas.21.06

Other claims from this paper (6)

Intervention effect Reducing irrigation from 100% to 50% of the water supply decreased onion plant height, bulb number and total chlorophyll content.
Intervention effect Reducing irrigation from 100% to 50% of the water supply decreased total onion bulb yield.
Intervention effect Foliar spraying with iron significantly increased most of the measured onion traits.
Intervention effect The combination of 100% water supply and 100 mg L–1 iron gave the highest onion total yield, 4 332 Mg ha–1.
Intervention effect The combination of 75% of water supply and 100 mg L–1 iron gave the highest onion water use efficiency, 84.7%.
Intervention effect Iron and irrigation level interacted significantly for most measured onion traits.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Rise in exchangeable sodium percentage decreased dry matter production of onion and garlic

Taxon: onion and garlicAllium cepa Allium sativume0
Organ / stage: stages of growthe0
Treatment: rise in ESPe0
Outcome: dry matter productione0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“There was continuous decrease in dry matter production at I (30 days after tranplanting and sowing of onion and garlic, respectively) and U (at harvesting) stages of growth and in diameter, weight and yield of bulb of the two test crops with rise in ESP”
✓ located verbatim in the source · abstract, characters 228–481

Title

Effect of Exachangeable Sodium Percentage on Growth, Yield and Chemical Composition of Onion and Garlic

S. B. Singh; I. P. Abrol Journal of the Indian Society of Soil Science 1985

Other claims from this paper (6)

Intervention effect Rise in exchangeable sodium percentage decreased bulb diameter, weight and yield of onion and garlic
Association Exchangeable sodium percentage had a significant negative correlation with bulb yield
Association Sodium content increased with higher exchangeable sodium percentage in both crops
Association Calcium content decreased with higher exchangeable sodium percentage in both crops
Observation Potassium content fell in onion only
Association Onion was more sensitive to sodic condition than garlic

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Extract coating improved onion fresh and dry weight.

Taxon: onionAllium cepae0
Treatment: dipping in polyvinyl alcohol/carboxymethyl cellulose (PVA/CMC) incorporated with Jania rubens extracte0
Outcome: fresh and dry weighte0
Direction: improvede0
Comparator: infected onion and PVA/CMC coatinge0

Verbatim

e0
“dipping in polyvinyl alcohol/carboxymethyl cellulose (PVA/CMC) incorporated with Jania rubens extract significantly improved the physiological status (fresh and dry weight), provided a stronger and more sustained reduction in oxidative stress markers (H 2 O 2 and MDA), and a prolonged decrease in fungal colony-forming units over two months compared to infected onion and PVA/CMC coating”
✓ located verbatim in the source · abstract, characters 787–1175

Title

Algal extract as a key protective agent: Jania rubens–enriched PVA/CMC coatings for postharvest onion disease control

Doaa E. Elsherif; Fatmah A. Safhi; Mai A. El-Esawy; et al. BMC Plant Biology 2026. doi:10.1186/s12870-026-08563-1

Other claims from this paper (7)

Observation The algal extract inhibited the tested onion fungi.
Observation The extract contained several bioactive compounds.
Intervention effect Extract coating reduced onion oxidative stress markers.
Intervention effect Extract coating decreased fungal colony-forming units over two months.
Observation The extract damaged fungal hyphae ultrastructure.
Observation The extract downregulated fungal cell wall, ergosterol, and antioxidant genes.
Recommendation The authors propose extract coatings for postharvest onion preservation.

“decrease in dry weight”

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