Search claims · PlantClaims

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

A 1% increase in DSI was associated with a 0.49% decrease in greenhouse yield.

Taxon: canolaBrassica napus var. napuse0
Treatment: DSIe7
Outcome: yielde7
Direction: decreasee7
Value: 0.49%e7
Setting: greenhouse conditionse7

Verbatim

e0
“Clubroot, caused by Plasmodiophora brassicae, is a major disease of canola (Brassica napus)”
✓ located verbatim in the source · abstract, characters 0–91

e7
“Regression analysis indicated that under greenhouse conditions, an increment of 1% in DSI resulted in a decrease of 0.49% in yield; under field conditions, this percentage was reduced to 0.26%”
✓ located verbatim in the source · abstract, characters 1226–1418

Title

Effect of clubroot ( Plasmodiophora brassicae ) on yield of canola ( Brassica napus )

Andrea Botero-Ramírez; Sheau-Fang Hwang; Stephen E. Strelkov Canadian Journal of Plant Pathology 2021. doi:10.1080/07060661.2021.1989801

Other claims from this paper (9)

Intervention effect Clubroot incidence and disease severity index increased with inoculum concentration in both the field and greenhouse.
Observation The susceptible cultivar 45H31 had the highest levels of clubroot disease.
Observation The resistant cultivar 45H29 had the lowest levels of clubroot disease.
Association Yield, pods per plant and 1000-grain weight decreased as the DSI increased in all cultivars.
Association Yield was affected by DSI and cultivar.
Association Yield was not affected by clubroot pathotype.
Association A 1% increase in DSI was associated with a 0.26% reduction in field yield.
Association The rate of yield reduction was similar among canola cultivars.
Association Overall yield loss was lower in resistant canola hosts, as they developed less disease.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

The oil-yield decrease at flowering to stem elongation exceeded that at other stages.

Taxon: canolaBrassica napus var. napust0
Treatment: flowering stage to stem elongation stagee0
Outcome: oil yieldse0
Direction: decreasee0
Comparator: other stagese0

Verbatim

e0
“The decrease of oil yields at the flowering stage to stem elongation stage was more than the other stages.”
✓ located verbatim in the source · abstract, characters 1268–1374

t0
“Canola (Brassica napus L.)”
✓ located verbatim in the source · title, characters 91–117

Title

Effects of Water Deficit Stress on Several Quantitative and Qualitative Characteristics of Canola (Brassica napus L.) Cultivars

Mohammad HOSSEINI; Payman HASSIBI Notulae Scientia Biologicae 2011. doi:10.15835/nsb336135

Other claims from this paper (11)

Association Water deficit and cultivar interacted in biological yield, seed oil yield and harvest index.
Association Water deficit and cultivar interacted in dry matter and economic yield.
Intervention effect Water deficit reduced grain oil yields.
Observation Hyola 308 under early stem elongation to early flowering stress had the lowest oil yield, 1.1 g plants-1.
Observation Hyola 401 without stress had the highest oil yield, 4.3 g plants-1.
Intervention effect Water deficit reduced harvest index at all three stress levels.
Intervention effect Water deficit reduced economic yield.
Intervention effect Water deficit reduced biological yield.
Observation Hyola 401 had a stress susceptibility index of 0.914 under stress from stem elongation to early sac emergence.
Observation Hyola 308 had a stress susceptibility index of 1.12 under the same stress stage.
Association Hyola 308 was more sensitive to water deficit than Hyola 401.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Fresh forage yield decreased at later harvest dates, and the decrease varied among planting ratios.

Taxon: canolaBrassica napus var. napust0
Treatment: harvested at later datese3
Outcome: Fresh forage yielde3
Direction: decreasede3
Qualifier: varied among planted ratiose3

Verbatim

t0
“Evaluation of Winter Canola for Forage Yield and Quality in Comparison to Wheat”
✓ located verbatim in the source · title, characters 0–79

e3
“Fresh forage yield harvested at later dates decreased and this decrease varied among planted ratios particularly with increase of wheat ratio in the intercrop”
✓ located verbatim in the source · abstract, characters 679–837

Title

Evaluation of Winter Canola for Forage Yield and Quality in Comparison to Wheat

U. R. Bishnoi; Suresh Kumar; Srinivasa Rao Mentreddy 2010

Other claims from this paper (6)

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Sulfur tended to decrease saturated fatty acids.

Taxon: CanolaBrassica napus var. napuse2
Treatment: Se0
Outcome: Total saturated fatty acidse1
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“decrease with S”
✓ located verbatim in the source · abstract, characters 1074–1089

e1
“Total saturated fatty acids were greatest”
✓ located verbatim in the source · abstract, characters 959–1000

e2
“Canola yields averaged”
✓ located verbatim in the source · abstract, characters 659–681

Title

Canola variety, nitrogen, phosphorus, and sulfur fertilization affect yield, quality, and fatty acid profile

Stephen Crittenden; George Clayton; Marley Boyce; et al. Canadian Journal of Plant Science 2023. doi:10.1139/cjps-2023-0055

Other claims from this paper (12)

Observation Conventional canola yielded 2.36 t·ha −1 at maximum fertilization.
Observation Low oleic acid canola yielded 2.53 t·ha −1.
Observation High oleic acid canola yielded 2.2 t·ha −1.
Observation High oleic acid canola averaged 75% oleic acid.
Observation Low oleic acid canola averaged 65% oleic acid.
Observation Conventional canola averaged 62% oleic acid.
Observation Total saturated fatty acids were greatest in conventional canola.
Intervention effect Nitrogen tended to increase saturated fatty acids.
Intervention effect Phosphorus did not influence saturated fatty acids.
Observation High oleic acid canola yielded slightly less than the other two varieties.
Observation High oleic acid canola tended toward lower glucosinolate and saturated fatty acid contents.
Recommendation The authors recommend studying canola varieties and fertility management for end-use-specific quality.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Canola seed yield per plant decreased with L. maculans infection.

Taxon: canolaBrassica napus var. napuse1
Interactor: L. maculansPlenodomus lingame0pathogen
Outcome: Seed yield per plante0
Direction: decreasee0

Verbatim

e0
“Seed yield per plant was found to decrease as a consequence of L. maculans infection”
✓ located verbatim in the source · abstract, characters 471–555

e1
“canola (Brassica napus L.)”
✓ located verbatim in the source · abstract, characters 94–120

Title

Yield losses and pyraclostrobin sensitivity in blackleg (Leptosphaeria maculans) of canola

Wang, Yixiao University of Alberta Library 2019. doi:10.7939/r3-3hn0-sa66

Other claims from this paper (4)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Each 1% DSI increment corresponded to 0.49% lower greenhouse yield.

Taxon: canolaBrassica napus var. napust0
Outcome: yielde0
Direction: decreasee0
Value: 0.49%e0
Comparator: DSIe0
Setting: greenhouse conditionse0

Verbatim

e0
“under greenhouse conditions, an increment of 1% in the DSI resulted in a decrease of 0.49% in yield”
✓ located verbatim in the source · abstract, characters 1913–2012

t0
“canola (oilseed rape; Brassica napus)”
✓ located verbatim in the source · abstract, characters 83–120

Title

Studies into clubroot (Plasmodiophora brassicae) epidemiology and resistance

Botero, Andrea University of Alberta Library 2021. doi:10.7939/r3-jned-3q61

Other claims from this paper (16)

Association Clubroot incidence and severity rose with inoculum density in field and greenhouse.
Observation Disease was highest in the susceptible cultivar and lowest in 45H29.
Association Yield, pods per plant and grain weight decreased as disease severity rose.
Association Yield depended on disease severity and cultivar but not pathotype.
Association Each 1% DSI increment corresponded to 0.26% lower field yield.
Observation Yield loss rates were similar among cultivars.
Observation Resistant hosts had lower overall yield losses because clubroot was less severe.
Observation Pathogen inoculum formed patches, mostly by field edges and entrances.
Observation Infested patches expanded by an average diameter of 221.3 m from 2017 to 2019.
Association Soil pH and boron, calcium and magnesium concentrations showed no important effect on pathogen inoculum density.
Observation Three QTLs controlling disease severity were identified.
Association Combining three resistance alleles significantly decreased disease severity.
Association PbBn_rsp_C03 controlled resting spores per plant and reduced production by 40%.
Observation Two QTLs overlapped in a region controlling both traits.
Observation Three disease resistance and defense genes were indicated in the overlapping region.
Recommendation The authors recommend considering both DSI and RSP in clubroot resistance breeding.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Late sowing decreased canola grain yield and quality.

Taxon: canolaBrassica napus var. napust0
Treatment: late sowing timee7
Outcome: canola grain yield and qualitye7
Direction: decreasee7

Not reportedComparator

Verbatim

e7
“The late sowing time increased the natural weed pressure leading to a decrease in both canola grain yield and quality”
✓ located verbatim in the source · abstract, characters 1354–1471

t0
“Canola”
✓ located verbatim in the source · title, characters 0–6

Title

Canola cultivar performance in weed-infested field plots confirms allelopathy ranking from in vitro testing

Md Asaduzzaman; David J. Luckett; Raymond B. Cowley; et al. Biocontrol Science and Technology 2014. doi:10.1080/09583157.2014.942596

Other claims from this paper (11)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Heat did not decrease stomatal conductance.

Taxon: CanolaBrassica napus var. napust0
Treatment: heate0
Outcome: stomatal conductancee0
Direction: note0

Not reportedComparator

Verbatim

e0
“The stomatal conductance decreased under drought and heat + drought treatments but not under heat.”
✓ located verbatim in the source · abstract, characters 647–745

t0
“Canola”
✓ located verbatim in the source · title, characters 0–6

Title

Canola Responses to Drought, Heat, and Combined Stress: Shared and Specific Effects on Carbon Assimilation, Seed Yield, and Oil Composition

Raed Elferjani; Raju Soolanayakanahally Frontiers in Plant Science 2018. doi:10.3389/fpls.2018.01224

Other claims from this paper (16)

Intervention effect Heat plus drought reduced net photosynthetic assimilation.
Intervention effect Drought reduced net photosynthetic assimilation.
Intervention effect Heat reduced net photosynthetic assimilation to a lesser extent.
Intervention effect Drought decreased stomatal conductance.
Intervention effect Combined heat and drought decreased stomatal conductance.
Intervention effect Heat significantly reduced mesophyll conductance.
Intervention effect Combined heat and drought significantly reduced mesophyll conductance.
Intervention effect Drought alone did not reduce mesophyll conductance.
Intervention effect Heat reduced carboxylation efficiency and electron transport rates.
Intervention effect Heat reduced seed yield by 85.3%.
Intervention effect Drought reduced seed yield by 31%.
Intervention effect Heat decreased seed oil content by 52%.
Intervention effect Heat increased protein content.
Intervention effect Drought increased protein content.
Intervention effect Combined heat and drought increased protein content.
Intervention effect Heat increased saturated fatty oils.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Delaying cultivation decreased canola yield components and seed yield.

Taxon: canolaBrassica napus var. napuse0
Treatment: delaying in culturee4
Outcome: yield components and seed yielde4
Direction: decreasee4

Not reportedComparator

Verbatim

e0
“In order to study the effects of delay cultivation on seed yield and germination parameters in canola, an experiment was conducted in Torbat-Jam region during 2010-2011”
✓ located verbatim in the source · abstract, characters 0–168

e4
“delaying in culture leads to decrease yield components and seed yield subsequently”
✓ located verbatim in the source · abstract, characters 593–675

Title

Study of Delay Cultivation on Seed Yield and Seed Quality of Canola (Brassica Napus L.) Genotypes

Mahdi Bayat Agrotechnology 2012. doi:10.4172/2168-9881.1000108

Other claims from this paper (7)

Intervention effect Changing canola genotype from Hyola 401 to Modena decreased seed yield by 40%.
Intervention effect Changing sowing date from 6 September to 6 November decreased canola seed yield by 10%.
Intervention effect Genotypes could affect canola seed yield more than sowing dates.
Intervention effect Genotypes, sowing dates and their interactions had significant effects on all agronomic traits of canola.
Intervention effect Genotypes, sowing dates and their interaction had significant effects on canola germination parameters.
Intervention effect Sowing dates were more effective than genotypes for canola seed quality and seed vigor.
Recommendation Seed produced at an appropriate sowing date is expected to be more vigorous and to increase canopy and growth rate in the next year.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Potassium deficiency significantly decreased canola seed yield.

Taxon: canolaBrassica napus var. napuse1
Treatment: Potassium deficiencye0
Outcome: canola seed yielde5
Direction: decreasee5
Setting: field plotse1

Not reportedComparator

Verbatim

e0
“Potassium deficiency caused significant: (1) increase in concentrations of nitrogen in youngest mature leaves”
✓ located verbatim in the source · abstract, characters 1067–1176

e1
“Four potassium fertilizer regimes were established in field plots of canola”
✓ located verbatim in the source · abstract, characters 343–418

e5
“decrease in canola seed yield”
✓ located verbatim in the source · abstract, characters 1323–1352

Title

Unmanned aerial vehicle canopy reflectance data detects potassium deficiency and green peach aphid susceptibility in canola

Dustin Severtson; Nik Callow; Ken Flower; et al. Precision Agriculture 2016. doi:10.1007/s11119-016-9442-0

Other claims from this paper (8)

Intervention effect Potassium deficiency significantly increased nitrogen concentration in the youngest mature canola leaves.
Intervention effect Potassium deficiency significantly increased green peach aphid density on canola.
Intervention effect Potassium deficiency significantly decreased vegetation cover in canola.
Intervention effect Potassium deficiency significantly decreased normalized difference vegetation indices (NDVI) in canola.
Method / resource UAV imagery at 65 mm resolution gave higher classification accuracy (72–100 %) than airborne imagery at 8 mm resolution.
Method / resource Bench-top hyperspectral imagery of field plants in laboratory conditions gave classification accuracy of 78–88 %.
Intervention effect Removing non-leaf pixels from UAV data increased classification accuracies for 8 mm and 65 mm images acquired at 96 and 113 days after sowing.
Recommendation The authors conclude that UAV imagery has potential to identify regions with nutrient deficiency in canola.

“yield decrease”

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