Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Se100 tended to decrease yield.

Taxon: onionAllium cepae1
Treatment: Se100 treatmente0
Outcome: yielde0
Direction: decreasee0
Qualifier: a tendencye0

Not reportedComparator

Verbatim

e0
“The Se100 treatment had a tendency to decrease bulb size and yield”
✓ located verbatim in the source · abstract, characters 563–629

e1
“applied to onion ‘Hercules’”
✓ located verbatim in the source · abstract, characters 240–267

Title

Selenium treatment under field conditions affects mineral nutrition, yield and antioxidant properties of bulb onion (Allium cepa L.).

P. Põldma; Ulvi Moor; Tõnu Tõnutare; et al. DOAJ (DOAJ: Directory of Open Access Journals) 2013

Other claims from this paper (9)

Intervention effect All Se treatments significantly reduced bulb sulfur content.
Intervention effect Se100 tended to decrease bulb size.
Intervention effect Se50 increased total bulb selenium.
Intervention effect Se50 increased total phenolics.
Intervention effect Se50 increased total antioxidant capacity.
Intervention effect Se50 tended to increase yield.
Intervention effect Se50 converted a larger share of total Se into organic compounds than Se100.
Observation Se10 produced the highest bulb TAC among treatments in 2009.
Recommendation The authors recommend 50 μg·mL-1 Se Na2SeO4 for bulb onion.

Associationobservedoriginal resultsimulated

Claim · model-written summary

Beyond about 943 mm, onion biomass yield is projected to decrease with additional water application.

Taxon: onionAllium cepae0
Treatment: additional water applicatione3
Outcome: biomass yielde3
Direction: will decreasee3

Verbatim

e0
“effect of different irrigation depths on onion (Allium cepa L.) yield”
✓ located verbatim in the source · abstract, characters 165–234

e3
“beyond that, the biomass yield will decrease with additional water application”
✓ located verbatim in the source · abstract, characters 1142–1220

Title

Water Productivity Indices of Onion (Allium cepa) under Drip Irrigation and Mulching in a Semi-Arid Tropical Region of Colombia

César Augusto Terán-Chaves; Luis Montejo-Nuñez; Carina Cordero-Cordero; et al. Horticulturae 2023. doi:10.3390/horticulturae9060632

Other claims from this paper (8)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Phoma terrestris did not decrease onion yield.

Taxon: onionsAllium cepae0
Treatment: P. terrestrise0
Interactor: P. terrestrisSetophoma terrestrise0pathogen
Outcome: yielde1
Direction: did not decreasee1

Not reportedComparator

Verbatim

e0
“When onions were grown in organic field soil, the addition of P. terrestris increased average levels of pink root at harvest from 40% (control) to 52% (amended) in the greenhouse”
✓ located verbatim in the source · abstract, characters 257–435

e1
“yield did not decrease”
✓ located verbatim in the source · abstract, characters 446–468

Title

Interaction ofPhoma terrestrisand Soil Moisture Level on Yield of Two Onion Cultivars Differentially Susceptible to Pink Root

P. M. Coleman Plant Disease 1992. doi:10.1094/pd-76-1213

Other claims from this paper (1)

Intervention effect Adding Phoma terrestris increased pink root in onions grown in greenhouse soil, from 40% to 52%.

Mechanismauthor interpretationreview summarynegativebasis n/a

Claim · model-written summary

Yield decrease in onion results from reduced photosynthetic area, producing smaller bulbs of poorer quality (review statement).

Taxon: OnionAllium cepae0
Outcome: Yield decreasee5
Qualifier: due to a reduced photosynthetic areae5

Verbatim

e0
“Onion (Allium cepa L.) is one of the most important vegetable species grown worldwide”
✓ located verbatim in the source · abstract, characters 0–85

e5
“Yield decrease occurs due to a reduced photosynthetic area, which leads to the formation of smaller bulbs of poorer quality”
✓ located verbatim in the source · abstract, characters 308–431

Title

Stemphylium vesicarium (wallr.) E.G. Simmons: An onion plant pathogen and options for suppression

Ana Takac; Slavica Vukovic Pesticidi i fitomedicina 2023. doi:10.2298/pif2302043t

Other claims from this paper (5)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Se100 tended to decrease bulb size.

Taxon: onionAllium cepae1
Treatment: Se100 treatmente0
Outcome: bulb sizee0
Direction: decreasee0
Qualifier: a tendencye0

Not reportedComparator

Verbatim

e0
“The Se100 treatment had a tendency to decrease bulb size and yield”
✓ located verbatim in the source · abstract, characters 563–629

e1
“applied to onion ‘Hercules’”
✓ located verbatim in the source · abstract, characters 240–267

Title

Selenium treatment under field conditions affects mineral nutrition, yield and antioxidant properties of bulb onion (Allium cepa L.).

P. Põldma; Ulvi Moor; Tõnu Tõnutare; et al. DOAJ (DOAJ: Directory of Open Access Journals) 2013

Other claims from this paper (9)

Intervention effect All Se treatments significantly reduced bulb sulfur content.
Intervention effect Se100 tended to decrease yield.
Intervention effect Se50 increased total bulb selenium.
Intervention effect Se50 increased total phenolics.
Intervention effect Se50 increased total antioxidant capacity.
Intervention effect Se50 tended to increase yield.
Intervention effect Se50 converted a larger share of total Se into organic compounds than Se100.
Observation Se10 produced the highest bulb TAC among treatments in 2009.
Recommendation The authors recommend 50 μg·mL-1 Se Na2SeO4 for bulb onion.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing nitrogen from 100 to 150 kg N ha -1 tended to decrease total bulb yield by 5.3%.

Taxon: onionAllium cepae0
Treatment: 150 kg N ha -1e1
Outcome: total bulb yielde1
Direction: decreasee1
Value: 5.3 %e1
Qualifier: tended toe1
Comparator: 100e1

Verbatim

e0
“onion (Allium cepa L.)”
✓ located verbatim in the source · abstract, characters 212–234

e1
“increasing the rate of N further from 100 to 150 kg N ha -1 tended to decrease total bulb yield by 5.3 %”
✓ located verbatim in the source · abstract, characters 1064–1168

Title

Agronomic and Economic Evaluation of Nitrogen Fertilizer Rates and Intra Row Spacing on Growth and Bulb Yield of Onion (Allium cepa L.) under Rainfall Condition

Kiros Gebretsadik Journals & Books Hosting (International Knowledge Sharing Platform) 2016

Other claims from this paper (11)

Intervention effect Nitrogen rate and spacing interacted in their effects on days to maturity.
Intervention effect Nitrogen rate and spacing interacted in their effects on plant height.
Intervention effect The main nitrogen effect significantly affected most studied parameters.
Intervention effect Spacing affected onion leaf number.
Intervention effect Spacing affected onion yield.
Intervention effect Increasing nitrogen rate prolonged onion days to maturity.
Intervention effect Increasing nitrogen from nil to 150 kg N ha -1 decreased bolting by 62%.
Intervention effect Increasing nitrogen from 50 to 100 kg N ha -1 increased total bulb yield by about 26.7%.
Intervention effect Increasing nitrogen from 50 to 100 kg N ha -1 increased leaf number by about 29%.
Observation The higher marketable yield at 100 kg N ha .-1 was 31.455t ha -1.
Recommendation The budget analysis identified 100 kg N ha -1 with 6 cm spacing as the best treatment for bulb yield and economic benefit under Shire conditions.

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Disease incidence tended to decrease as the number of irrigations increased.

Taxon: onionAllium cepat0
Treatment: number of irrigationse7
Outcome: disease incidencee7
Direction: decreasee7

Verbatim

t0
“YIELD OF ONION AND LEAF PURPLE BLOTCH INCIDENCE”
✓ located verbatim in the source · title, characters 0–47

e7
“There was a trend to decrease the disease incidence with increasing number of irrigations”
✓ located verbatim in the source · abstract, characters 585–674

Title

YIELD OF ONION AND LEAF PURPLE BLOTCH INCIDENCE AS INFLUENCED BY DIFFERENT LEVELS OF IRRIGATION

S. K. Biswas; Abul Khair; P.K. Sarker . Agricultura tropica et subtropica 2010

Other claims from this paper (7)

Intervention effect Irrigation levels did not significantly change leaf purple blotch disease incidence in onion.
Intervention effect Irrigation significantly increased onion bulb yield compared with the non-irrigated control.
Observation The highest onion yields were obtained from irrigation treatments I 1 and I 2.
Observation Total water use was 248 mm in irrigation treatment I 1.
Observation The incremental benefit-cost ratio was highest (28.36) in irrigation treatment I 2.
Observation Leaf purple blotch disease infection was highest in the non-irrigated control (Io), with score 1.96.
Observation Leaf purple blotch disease score was lowest (1.45) in irrigation treatment I 1.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Reducing inorganic fertilizer to 50% of the control did not decrease shallot yield.

Taxon: shallotAllium cepa var. aggregatume2
Treatment: reducing inorganic fertilizer rates to 50% of controle2
Outcome: shallot yielde2
Direction: did not decreasee2
Comparator: controle2
Setting: Srigading Village, Sanden Sub-District, Bantul Districte5

Verbatim

e0
“The intensive application of synthetic/inorganic fertilizer on shallot cultivation”
✓ located verbatim in the source · abstract, characters 0–82

e2
“reducing inorganic fertilizer rates to 50% of control did not decrease shallot yield”
✓ located verbatim in the source · abstract, characters 1241–1325

e5
“This research was conducted from August to November 2016 in Srigading Village, Sanden Sub-District, Bantul District”
✓ located verbatim in the source · abstract, characters 700–815

Title

Effect of reducing rates of NPK, ZA, and KCl fertilizers on the growth and yield of shallot in multiple cropping system in Bantul

Karsidi Karsidi; Endang Sulistyaningsih; Didik Indradewa; et al. Ilmu Pertanian (Agricultural Science) 2020. doi:10.22146/ipas.36816

Other claims from this paper (2)

Intervention effect Multiple cropping with chili did not decrease the growth and yield of shallot compared with monoculture.
Intervention effect Inorganic fertilizer at 25% of the control significantly decreased shallot yield by 12.15%.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Multiple cropping with chili did not decrease the growth and yield of shallot compared with monoculture.

Taxon: shallotAllium cepa var. aggregatume0
Treatment: multiple cropping systeme1
Outcome: growth and yielde1
Direction: did not decreasee1
Comparator: monoculture system (shallot)e4
Setting: Srigading Village, Sanden Sub-District, Bantul Districte5

Verbatim

e0
“The intensive application of synthetic/inorganic fertilizer on shallot cultivation”
✓ located verbatim in the source · abstract, characters 0–82

e1
“multiple cropping system did not decrease the growth and yield of shallot”
✓ located verbatim in the source · abstract, characters 1156–1229

e4
“monoculture system (shallot) and multiple cropping system (shallot – chili)”
✓ located verbatim in the source · abstract, characters 957–1032

e5
“This research was conducted from August to November 2016 in Srigading Village, Sanden Sub-District, Bantul District”
✓ located verbatim in the source · abstract, characters 700–815

Title

Effect of reducing rates of NPK, ZA, and KCl fertilizers on the growth and yield of shallot in multiple cropping system in Bantul

Karsidi Karsidi; Endang Sulistyaningsih; Didik Indradewa; et al. Ilmu Pertanian (Agricultural Science) 2020. doi:10.22146/ipas.36816

Other claims from this paper (2)

Intervention effect Reducing inorganic fertilizer to 50% of the control did not decrease shallot yield.
Intervention effect Inorganic fertilizer at 25% of the control significantly decreased shallot yield by 12.15%.

Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The yield decrease under high-dose ethylene was attributed to fewer seeds per flower.

Taxon: OnionAllium cepat0
Outcome: decreasese0
Qualifier: reduction in the number of seeds per flowere0

Verbatim

e0
“Such decreases were due to a reduction in the number of seeds per flower.”
✓ located verbatim in the source · abstract, characters 1117–1190

t0
“Onion”
✓ located verbatim in the source · title, characters 60–65

Title

Ethylene and Chitosan Affected the Seed Yield Components of Onion Depending More on the Dose than Timing of Application

Daniele Vecchiotti; Francesco G. S. Angeletti; Gianfranco Romanazzi; et al. Horticulturae 2022. doi:10.3390/horticulturae8090781

Other claims from this paper (11)

Intervention effect Early 100% recommended-dose ethylene did not change onion seed yield.
Intervention effect Early 100% recommended-dose ethylene increased thousand seed weight by 3.2%.
Intervention effect The 150% recommended ethylene dose decreased onion seed yield by 33.5% regardless of application timing.
Intervention effect Chitosan had no apparent crop effect at 100% recommended-dose ethylene.
Intervention effect Under 150% recommended-dose ethylene, chitosan increased onion seed yield.
Intervention effect Under 150% recommended-dose ethylene, chitosan slightly increased thousand seed weight without statistical significance.
Observation Fresh onion seed germination was 92%.
Intervention effect Seventeen months of aging reduced onion seed germination by 14%.
Intervention effect Ethylene and chitosan treatments did not change the onion germination pattern.
Mechanism The authors suggested that high-dose ethylene yield loss may reflect delayed flowering during a relatively dry month.
Mechanism The authors proposed that chitosan sustained yield under 150% recommended-dose ethylene through physical protection from transpiration.

“yield decrease”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics