By interacting organism › Plants › Portulacaceae

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Essential oils of E. globulus gave 100% post-emergent mortality of Portulaca oleracea at the highest concentrations.

Taxon: Eucalyptus globulusEucalyptus globulust0
Interactor: Portulaca oleraceaPortulaca oleraceae2weed
Outcome: mortalitye2
Value: 100%e2
Qualifier: post-emergent effectse2

Verbatim

t0
“essential oils from young and mature Eucalyptus globulus leaves”
✓ located verbatim in the source · title, characters 61–124

e2
“Herbicidal activity was tested against Portulaca oleracea and Solanum nigrum in pre- and post-emergent assays, showing strong post-emergent effects with 100% mortality at the highest concentrations”
✓ located verbatim in the source · abstract, characters 707–904

Title

How does leaf age affect performance? A comparative study of essential oils from young and mature Eucalyptus globulus leaves in crop protection

Mafalda Pinto; Cristiano Soares; Ana Cristina Figueiredo; et al. Pest Management Science 2026. doi:10.1002/ps.70815

Other claims from this paper (17)

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Nitrogen addition did not significantly change A. retroflexus relative yield with P. oleracea.

Taxon: A. retroflexusAmaranthus retroflexuse0
Treatment: nitrogen additione0
Interactor: P. oleraceaPortulaca oleraceae0other
Outcome: relative yield of A. retroflexuse0
Direction: no significant effecte0

Not reportedComparator

Verbatim

e0
“nitrogen addition had no significant effect on the relative yield of A. retroflexus but significantly increased the relative yield of P. oleracea, thereby weakening the competitive advantage of A. retroflexus.”
✓ located verbatim in the source · abstract, characters 389–598

Title

Nitrogen Forms Alter the Competitive Advantage of the Invasive Plant Amaranthus retroflexus over the Local Species

Fan Yang; Yige Zhang; Wenhui Wang; et al. Nitrogen 2026. doi:10.3390/nitrogen7020057

Other claims from this paper (10)

Intervention effect Nitrogen addition significantly increased P. oleracea relative yield.
Intervention effect Nitrogen addition weakened A. retroflexus competitive advantage with P. oleracea.
Intervention effect Nitrogen addition no significant effect relative yield of M. sativa in the A. retroflexus–M. sativa mixture.
Intervention effect Nitrogen addition increased relative yield of A. retroflexus in the A. retroflexus–M. sativa mixture.
Intervention effect Nitrogen addition enhancing competitive advantage of A. retroflexus in the A. retroflexus–M. sativa mixture.
Intervention effect NO3−-N strengthened A. retroflexus competitive advantage with M. sativa.
Intervention effect NO3−-N weakened A. retroflexus competitive advantage with P. oleracea.
Association A. retroflexus competitive advantage was associated with photosynthetic traits and nitrogen absorption efficiency.
Observation The competitive response included greater leaf number, leaf area and SPAD value.
Observation The competitive response included greater leaf biomass.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrogen addition weakened A. retroflexus competitive advantage with P. oleracea.

Taxon: A. retroflexusAmaranthus retroflexuse0
Treatment: nitrogen additione0
Interactor: P. oleraceaPortulaca oleraceae0other
Outcome: competitive advantage of A. retroflexuse0
Direction: weakeninge0

Not reportedComparator

Verbatim

e0
“nitrogen addition had no significant effect on the relative yield of A. retroflexus but significantly increased the relative yield of P. oleracea, thereby weakening the competitive advantage of A. retroflexus.”
✓ located verbatim in the source · abstract, characters 389–598

Title

Nitrogen Forms Alter the Competitive Advantage of the Invasive Plant Amaranthus retroflexus over the Local Species

Fan Yang; Yige Zhang; Wenhui Wang; et al. Nitrogen 2026. doi:10.3390/nitrogen7020057

Other claims from this paper (10)

Intervention effect Nitrogen addition did not significantly change A. retroflexus relative yield with P. oleracea.
Intervention effect Nitrogen addition significantly increased P. oleracea relative yield.
Intervention effect Nitrogen addition no significant effect relative yield of M. sativa in the A. retroflexus–M. sativa mixture.
Intervention effect Nitrogen addition increased relative yield of A. retroflexus in the A. retroflexus–M. sativa mixture.
Intervention effect Nitrogen addition enhancing competitive advantage of A. retroflexus in the A. retroflexus–M. sativa mixture.
Intervention effect NO3−-N strengthened A. retroflexus competitive advantage with M. sativa.
Intervention effect NO3−-N weakened A. retroflexus competitive advantage with P. oleracea.
Association A. retroflexus competitive advantage was associated with photosynthetic traits and nitrogen absorption efficiency.
Observation The competitive response included greater leaf number, leaf area and SPAD value.
Observation The competitive response included greater leaf biomass.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

NO3−-N weakened A. retroflexus competitive advantage with P. oleracea.

Taxon: A. retroflexusAmaranthus retroflexuse0
Treatment: NO3−-N treatmente0
Interactor: P. oleraceaPortulaca oleraceae0other
Outcome: advantage of A. retroflexuse0
Direction: weakenede0

Not reportedComparator

Verbatim

e0
“The effect of NO3−-N treatment varied markedly between the two mixed-culture systems: it strengthened the advantage of A. retroflexus when grown with M. sativa yet weakened the advantage when grown with P. oleracea.”
✓ located verbatim in the source · abstract, characters 820–1035

Title

Nitrogen Forms Alter the Competitive Advantage of the Invasive Plant Amaranthus retroflexus over the Local Species

Fan Yang; Yige Zhang; Wenhui Wang; et al. Nitrogen 2026. doi:10.3390/nitrogen7020057

Other claims from this paper (10)

Intervention effect Nitrogen addition did not significantly change A. retroflexus relative yield with P. oleracea.
Intervention effect Nitrogen addition significantly increased P. oleracea relative yield.
Intervention effect Nitrogen addition weakened A. retroflexus competitive advantage with P. oleracea.
Intervention effect Nitrogen addition no significant effect relative yield of M. sativa in the A. retroflexus–M. sativa mixture.
Intervention effect Nitrogen addition increased relative yield of A. retroflexus in the A. retroflexus–M. sativa mixture.
Intervention effect Nitrogen addition enhancing competitive advantage of A. retroflexus in the A. retroflexus–M. sativa mixture.
Intervention effect NO3−-N strengthened A. retroflexus competitive advantage with M. sativa.
Association A. retroflexus competitive advantage was associated with photosynthetic traits and nitrogen absorption efficiency.
Observation The competitive response included greater leaf number, leaf area and SPAD value.
Observation The competitive response included greater leaf biomass.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Portulaca oleracea had the highest density among dicotyledon weeds in summer in parsley fields.

Taxon: Petroselinum crispumPetroselinum crispume0
Interactor: Portulaca oleraceaPortulaca oleraceae4weed
Outcome: densitye4
Value: 14.1 plants m-2e4
Setting: In summere4

Verbatim

e0
“Parsley (Petroselinum crispum (Mill.) Nyman ex A.W. Hill) is an important vegetable”
✓ located verbatim in the source · abstract, characters 0–83

e4
“In summer, Portulaca oleracea had both the highest density (14.1 plants m-2) and prevalence (59.5%) among dicotyledons, while Cyperus rotundus exhibited similar dominance among monocotyledons (8.7 plants m-2, 46.5%)”
✓ located verbatim in the source · abstract, characters 997–1212

Title

Weed Species, Control Methods and Their Effects on Yield and Quality in Parsley Fields of İzmir Province of Türkiye

Yıldız Sokat; Çetin Özkul Horticultural Studies 2025. doi:10.16882/hortis.1612248

Other claims from this paper (12)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Portulaca oleracea had a prevalence of 59.5% among dicotyledon weeds in summer in parsley fields.

Taxon: Petroselinum crispumPetroselinum crispume0
Interactor: Portulaca oleraceaPortulaca oleraceae4weed
Outcome: prevalencee4
Value: 59.5%e4
Setting: In summere4

Verbatim

e0
“Parsley (Petroselinum crispum (Mill.) Nyman ex A.W. Hill) is an important vegetable”
✓ located verbatim in the source · abstract, characters 0–83

e4
“In summer, Portulaca oleracea had both the highest density (14.1 plants m-2) and prevalence (59.5%) among dicotyledons, while Cyperus rotundus exhibited similar dominance among monocotyledons (8.7 plants m-2, 46.5%)”
✓ located verbatim in the source · abstract, characters 997–1212

Title

Weed Species, Control Methods and Their Effects on Yield and Quality in Parsley Fields of İzmir Province of Türkiye

Yıldız Sokat; Çetin Özkul Horticultural Studies 2025. doi:10.16882/hortis.1612248

Other claims from this paper (12)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Herbicide treatment 2 gave 100% control of Portulaca oleracea.

Taxon: TOMATOSolanum lycopersicumt0
Treatment: tretmana 2)e2
Interactor: P. oleraceaPortulaca oleraceae2weed
Outcome: u suzbijanju vrste P. oleraceae2
Direction: higherinferrede2
Value: 100%e2

Not reportedComparator

Verbatim

t0
“PROCESSING TOMATO”
✓ located verbatim in the source · title, characters 63–80

e2
“Efikasnost tretmana 2) u suzbijanju vrste P. oleracea bila je 100%”
✓ located verbatim in the source · abstract, characters 2251–2317

Title

SELECTIVITY AND EFFICACY OF SOME HERBICIDES IN WEED CONTROL IN PROCESSING TOMATO

Jovanović, Darko; Savić, Slađana; Šikuljak, Danijela; et al. RIVeC (Institute for Vegetable Crops, Smederevska Palanka, Serbia) 2025

Other claims from this paper (4)

Intervention effect Herbicide treatment 2 applied before transplanting gave the best control of Echinochloa crus-galli, with 81.50% dry-mass reduction.
Intervention effect Both herbicide treatments caused phytotoxicity to tomato.
Intervention effect Herbicide treatment 1 applied before planting gave the largest tomato dry-mass reduction, 81.23%.
Intervention effect Herbicide treatment 2 applied after planting gave the smallest tomato dry-mass reduction, 52.43%.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Portulaca oleracea seeds were among the most susceptible to the essential oils.

Taxon: Artemisia annua L.Artemisia annuat0
Treatment: EOse1
Interactor: Portulaca oleraceaPortulaca oleraceae0weed
Outcome: Portulaca oleraceae0
Direction: most susceptiblee0

Not reportedComparator

Verbatim

t0
“Artemisia annua L.”
✓ located verbatim in the source · title, characters 27–45

e0
“The most susceptible seeds were Sinapis alba, Papaver rhoeas, and Portulaca oleracea”
✓ located verbatim in the source · abstract, characters 1069–1153

e1
“The possible phytotoxicity of the EOs on seeds”
✓ located verbatim in the source · abstract, characters 969–1015

Title

Effect of Plant Density on Artemisia annua L. Biomass and Essential Oil Yield and Its Weed Seed Germination Suppression

Flavio Polito; Michele Denora; Donato Casiello; et al. Agriculture 2025. doi:10.3390/agriculture15131330

Other claims from this paper (14)

Observation Essential oil yield increased from year one to year two for 20D density, from 0.117 to 0.439%.
Observation Essential oil yield increased from year one to year two for 40D density, from 0.157 to 0.550%.
Observation Oxygenated monoterpenes increased in year two.
Observation Oxygenated sesquiterpenes disappeared in year two.
Observation Sesquiterpene hydrocarbons were the principal oil class in year one.
Observation Oxygenated monoterpenes predominated in year two.
Observation Artemisia ketone was present in all essential oils at 8.05–65.77%.
Observation Eucalyptol was present in all essential oils at 4.70–13.14%.
Observation β-selinene was present in all essential oils at 5.38–37.53%.
Observation Trans-caryophyllene at 11.65% appeared only in first-year essential oils.
Intervention effect Sinapis alba seeds were among the most susceptible to the essential oils.
Intervention effect Papaver rhoeas seeds were among the most susceptible to the essential oils.
Intervention effect Second-year oils had greater phytotoxicity, with up to 100% germination effects on P. rhoeas and P. oleracea.
Intervention effect Root elongation inhibition reached 100% at higher tested oil concentrations.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Second-year oils had greater phytotoxicity, with up to 100% germination effects on P. rhoeas and P. oleracea.

Taxon: Artemisia annua L.Artemisia annuat0
Treatment: 2nd yeare0
Interactor: P. rhoeasPapaver rhoease0weed
Second interactor: P. oleraceaPortulaca oleraceae0weed
Outcome: germination of P. rhoeas and P. oleraceae0
Direction: greatere0
Value: up to 100%e0

Not reportedComparator

Verbatim

t0
“Artemisia annua L.”
✓ located verbatim in the source · title, characters 27–45

e0
“The phytotoxicity was greater in the 2nd year, with more marked effects on the germination of P. rhoeas and P. oleracea (up to 100%)”
✓ located verbatim in the source · abstract, characters 1155–1287

Title

Effect of Plant Density on Artemisia annua L. Biomass and Essential Oil Yield and Its Weed Seed Germination Suppression

Flavio Polito; Michele Denora; Donato Casiello; et al. Agriculture 2025. doi:10.3390/agriculture15131330

Other claims from this paper (14)

Observation Essential oil yield increased from year one to year two for 20D density, from 0.117 to 0.439%.
Observation Essential oil yield increased from year one to year two for 40D density, from 0.157 to 0.550%.
Observation Oxygenated monoterpenes increased in year two.
Observation Oxygenated sesquiterpenes disappeared in year two.
Observation Sesquiterpene hydrocarbons were the principal oil class in year one.
Observation Oxygenated monoterpenes predominated in year two.
Observation Artemisia ketone was present in all essential oils at 8.05–65.77%.
Observation Eucalyptol was present in all essential oils at 4.70–13.14%.
Observation β-selinene was present in all essential oils at 5.38–37.53%.
Observation Trans-caryophyllene at 11.65% appeared only in first-year essential oils.
Intervention effect Sinapis alba seeds were among the most susceptible to the essential oils.
Intervention effect Papaver rhoeas seeds were among the most susceptible to the essential oils.
Intervention effect Portulaca oleracea seeds were among the most susceptible to the essential oils.
Intervention effect Root elongation inhibition reached 100% at higher tested oil concentrations.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Root elongation inhibition reached 100% at higher tested oil concentrations.

Taxon: Artemisia annua L.Artemisia annuat0
Treatment: higher concentrations testede0
Interactor: P. rhoeasPapaver rhoease1weed
Second interactor: P. oleraceaPortulaca oleraceae1weed
Outcome: inhibition of root elongatione0
Direction: inhibitione0
Value: 100%e0

Not reportedComparator

Verbatim

t0
“Artemisia annua L.”
✓ located verbatim in the source · title, characters 27–45

e0
“The inhibition of root elongation reached 100% for those at the higher concentrations tested”
✓ located verbatim in the source · abstract, characters 1289–1381

e1
“P. rhoeas and P. oleracea”
✓ located verbatim in the source · abstract, characters 1249–1274

Title

Effect of Plant Density on Artemisia annua L. Biomass and Essential Oil Yield and Its Weed Seed Germination Suppression

Flavio Polito; Michele Denora; Donato Casiello; et al. Agriculture 2025. doi:10.3390/agriculture15131330

Other claims from this paper (14)

Observation Essential oil yield increased from year one to year two for 20D density, from 0.117 to 0.439%.
Observation Essential oil yield increased from year one to year two for 40D density, from 0.157 to 0.550%.
Observation Oxygenated monoterpenes increased in year two.
Observation Oxygenated sesquiterpenes disappeared in year two.
Observation Sesquiterpene hydrocarbons were the principal oil class in year one.
Observation Oxygenated monoterpenes predominated in year two.
Observation Artemisia ketone was present in all essential oils at 8.05–65.77%.
Observation Eucalyptol was present in all essential oils at 4.70–13.14%.
Observation β-selinene was present in all essential oils at 5.38–37.53%.
Observation Trans-caryophyllene at 11.65% appeared only in first-year essential oils.
Intervention effect Sinapis alba seeds were among the most susceptible to the essential oils.
Intervention effect Papaver rhoeas seeds were among the most susceptible to the essential oils.
Intervention effect Portulaca oleracea seeds were among the most susceptible to the essential oils.
Intervention effect Second-year oils had greater phytotoxicity, with up to 100% germination effects on P. rhoeas and P. oleracea.

Portulacaceae 223 claims

223 claims