R. communis 13 claims

Interactor role: other, weed

Literal values, not normalised. 183,098 distinct spellings cover 1,706,259 claims; only letter case and spacing are merged, so “maize”, “corn” and “Zea mays L.” are three separate entries here. The By interacting organism view merges spellings of one organism through NCBI Taxonomy.

13 claims

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Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Castor leaf decomposition byproducts reduced seedling germination.

Taxon: Handroanthus impetiginosusHandroanthus impetiginosust0
Treatment: byproducts of R. communis leaf decompositione0
Interactor: R. communisRicinus communise0weed
Outcome: seedling germinatione0
Direction: negative effectse0

Not reportedComparator

Verbatim

e0
“The byproducts of R. communis leaf decomposition had negative effects on seedling germination”
✓ located verbatim in the source · abstract, characters 1124–1217

t0
“Handroanthus impetiginosus (Mart. ex DC.) Mattos”
✓ located verbatim in the source · abstract, characters 240–288

Title

Dominance of Ricinus communis in the Semi‐Arid Region Mediated by Allelopathy

Bruno M. Alcântara; Felipe R. Santos; José Anderson S. Silva; et al. Weed Research 2026. doi:10.1111/wre.70079

Other claims from this paper (6)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Postgermination adverse effects were most prominent at the highest castor leaf concentration.

Taxon: Handroanthus impetiginosusHandroanthus impetiginosust0
Treatment: highest concentration of R. communis leavese0
Interactor: R. communisRicinus communise0weed
Outcome: negative effectse0
Direction: most prominente0

Verbatim

e0
“negative effects being most prominent at the highest concentration of R. communis leaves”
✓ located verbatim in the source · abstract, characters 1494–1582

t0
“Handroanthus impetiginosus (Mart. ex DC.) Mattos”
✓ located verbatim in the source · abstract, characters 240–288

Title

Dominance of Ricinus communis in the Semi‐Arid Region Mediated by Allelopathy

Bruno M. Alcântara; Felipe R. Santos; José Anderson S. Silva; et al. Weed Research 2026. doi:10.1111/wre.70079

Other claims from this paper (6)

Observation Decomposed castor leaf material contained 10 compounds in five classes.
Observation Phytol and palmitic acid were identified in castor leaf decomposition material.
Intervention effect Castor leaf decomposition byproducts reduced seedling germination.
Intervention effect The two highest leaf litter concentrations reduced seed germination by 90%.
Observation Radicle and hypocotyl tissue thickness varied significantly, with qualitative changes.
Mechanism Castor allelopathy may reduce or eliminate the native tree in the medium to long term.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Aboveground competition ratio for Opuntia was 3.4-fold higher than for Ricinus.

Taxon: O. ficus-indicaOpuntia ficus-indicae0
Interactor: R. communisRicinus communise0other
Outcome: competition in aboveground productivitye0
Direction: highere0
Value: 3.4-folde0
Comparator: R. communise0

Verbatim

e0
“competition in aboveground productivity measured by the logarithmic response ratio for O. ficus-indica was 3.4-fold and 5.9-fold higher than for R. communis and S. marginatum, respectively”
✓ located verbatim in the source · abstract, characters 898–1086

Title

An inferior competitor is a successful invader due to its stress tolerance and productivity

Yohannes B. Tesfay; Annika Blaschke; Juergen Kreyling Scientific Reports 2023. doi:10.1038/s41598-023-48152-y

Other claims from this paper (11)

Observation Opuntia was a weak competitor in pairwise greenhouse experiments.
Mechanism Fallen Opuntia cladodes underwent vegetative growth contributing to spread.
Observation Aboveground competition ratio for Opuntia was 5.9-fold higher than for Solanum.
Observation Ricinus was facilitated belowground by Opuntia, with ratio − 1.00 ± 0.69.
Observation Opuntia suffered high belowground competition.
Intervention effect Under water shortage, aboveground competition for Solanum decreased 5.7-fold.
Intervention effect Under water shortage, aboveground competition for Opuntia increased 1.4-fold.
Observation Opuntia produced 4.3 times more aboveground biomass than Ricinus.
Observation Opuntia produced 3.8 times more aboveground biomass than Solanum.
Observation Opuntia produced 27 times more belowground biomass than Ricinus.
Observation Opuntia produced 2.8 times more belowground biomass than Solanum.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

A 15% Ricinus communis leaf extract reduced Cyperus seedling shoot and root emergence, length and dry matter accumulation.

Taxon: C. rotundusCyperus rotunduse0
Treatment: R. communis aqueous extract leaves (15% concentration)e0
Interactor: R. communisRicinus communise0other
Outcome: Soot and root emergence, length, and dry matter accumulatione0
Direction: reducede0

Not reportedComparator

Verbatim

e0
“Soot and root emergence, length, and dry matter accumulation of C. rotundus seedlings were reduced due to the allelopathy caused by R. communis aqueous extract leaves (15% concentration) and under purple or red light spectrum radiation.”
✓ located verbatim in the source · abstract, characters 1131–1367

t0
“Cyperus rotundus”
✓ located verbatim in the source · title, characters 94–110

Title

Allelopathy of Ricinus communis and light spectrum variation decrease emergence and growth of Cyperus rotundus

Rener Luciano de Souza Ferraz; Patrícia da Silva Costa; Guilherme Felix Dias; et al. Bioscience Journal 2023. doi:10.14393/bj-v39n0a2023-63062

Other claims from this paper (2)

Intervention effect Purple light reduced Cyperus seedling shoot and root emergence, length and dry matter accumulation.
Intervention effect Red light reduced Cyperus seedling shoot and root emergence, length and dry matter accumulation.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

R. communis extract at 75% completely suppressed S. indicus seed germination at five and ten days.

Taxon: S. indicusSporobolus indicuse0
Treatment: R. communis and C. papaya at 75%e0
Interactor: R. communisRicinus communise0other
Outcome: S. indicus seed germinatione0
Direction: completely suppressede0
Qualifier: at five and ten dayse0

Not reportedComparator

Verbatim

e0
“The P. tenellus extracts at all dilutions and those of R. communis and C. papaya at 75% completely suppressed S. indicus seed germination at five and ten days”
✓ located verbatim in the source · abstract, characters 740–898

Title

Green leaves and seeds alcoholic extract controls Sporobulus indicus germination in laboratory conditions

Jean Flaviel de Sousa Macêdo; Lylian Souto Ribeiro; Riselane de Lucena Alcântara Bruno; et al. Scientific Reports 2020. doi:10.1038/s41598-020-58321-y

Other claims from this paper (3)

Observation Chemical component concentrations varied among alcoholic extracts.
Intervention effect P. tenellus extract at all dilutions completely suppressed S. indicus seed germination at five and ten days.
Intervention effect C. papaya seed extract at 75% completely suppressed S. indicus seed germination at five and ten days.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

The 5% Ricinus treatment was least effective on Malachra root length.

Taxon: Malachra capitataMalachra capitatae2
Treatment: T1 of R. communise0
Interactor: R. communisRicinus communise0other
Outcome: root lengthe0
Direction: least effectivee0

Not reportedComparator

Verbatim

e0
“T1 of R. communis was least effective on root length”
✓ located verbatim in the source · abstract, characters 894–946

e1
“T1=5%”
✓ located verbatim in the source · abstract, characters 418–423

e2
“Malachra capitata”
✓ located verbatim in the source · abstract, characters 369–386

Title

Allelopathic effect of some plants on morphological attributes of invasive alien weed: Malachra capitata (L.)L.

Vaishali Ramgunde; Alka Chaturvedi GSC Biological and Pharmaceutical Sciences 2019. doi:10.30574/gscbps.2019.6.2.0020

Other claims from this paper (6)

Intervention effect Vitex leaf leachate significantly inhibited Malachra growth at all tested concentrations.
Intervention effect Ricinus leaf leachate significantly inhibited Malachra growth at all tested concentrations.
Association Increasing leachate concentration reduced Malachra root and shoot length.
Association Increasing leachate concentration reduced Malachra flowers, fruits and seeds.
Intervention effect Leachates totally inhibited branching except for the 5% Vitex treatment.
Intervention effect Leachates of both source plants negatively affected Malachra dry and fresh weight.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

R. communis was among the most allelopathic plants against redroot pigweed.

Taxon: redroot pigweede0
Treatment: R. communise0
Interactor: R. communisRicinus communise0other
Outcome: most allelopathice0
Direction: most allelopathice0

Not reportedComparator

Verbatim

e0
“The most allelopathic against the redroot pigweed were R. communis, N. tabacum, and D. inoxia.”
✓ located verbatim in the source · abstract, characters 548–642

Title

Assessment of some medicinal plants for their allelopathic potential against redroot pigweed (Amaranthus retroflexus)

Marzieh Sabagh Nekonam; Jamshid Razmjoo; Hasan Kraimmojeni; et al. Journal of Plant Protection Research 2014. doi:10.2478/jppr-2014-0014

Other claims from this paper (10)

Intervention effect All tested aqueous extracts significantly inhibited pigweed germination, seedling length and weight in the laboratory.
Intervention effect N. tabacum was among the most allelopathic plants against redroot pigweed.
Intervention effect D. inoxia was among the most allelopathic plants against redroot pigweed.
Intervention effect Extracts significantly inhibited pigweed dry weight, height and leaf area in the greenhouse.
Intervention effect Powder significantly inhibited pigweed dry weight, height and leaf area in the greenhouse.
Intervention effect Extracts significantly inhibited pigweed survivor numbers and chlorophyll amount in the greenhouse.
Intervention effect Powder significantly inhibited pigweed survivor numbers and chlorophyll amount in the greenhouse.
Association Higher concentrations produced stronger inhibition in the pigweed germination bioassay.
Association Higher powder concentrations produced stronger inhibition of pigweed.
Recommendation The authors propose tested plant powders and extracts as natural herbicides and mulches against redroot pigweed.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

R. communis extract reduced parthenium germination percentage by 79%.

Taxon: partheniumPartheniume0
Treatment: ALE of R. communise0
Interactor: R. communisRicinus communise0other
Outcome: germination percentagee0
Direction: reductionse0
Value: 79%e0

Not reportedComparator

Verbatim

e0
“ALE of R. communis showed maximum reductions in germination percentage (79%), germination index (89%) and seedling biomass (88%) as well as maximum delays in mean germination time (211%) and time to 50% germination (265%) of parthenium”
✓ located verbatim in the source · abstract, characters 356–591

Title

Tree species as a potential source of bio-herbicides for controllingParthenium hysterophorusL.

Muhammad Ehsan Safdar; Asif Tanveer; Abdul Khaliq; et al. Natural Product Research 2013. doi:10.1080/14786419.2013.790028

Other claims from this paper (10)

Intervention effect R. communis extract reduced parthenium germination index by 89%.
Intervention effect R. communis extract reduced parthenium seedling biomass by 88%.
Intervention effect R. communis extract delayed mean parthenium germination time by 211%.
Intervention effect R. communis extract delayed time to 50% parthenium germination by 265%.
Intervention effect Z. mauritiana extract reduced parthenium seedling length by 47%.
Intervention effect Z. mauritiana extract reduced parthenium seedling vigour index by 97%.
Observation R. communis extract had an LC50 of 1.04% against parthenium.
Observation Z. mauritiana extract had an LC50 of 1.44% against parthenium.
Recommendation The authors identify R. communis as a potential bio-herbicide source against the weed.
Recommendation The authors identify Z. mauritiana as a potential bio-herbicide source against the weed.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

R. communis extract reduced parthenium germination index by 89%.

Taxon: partheniumPartheniume0
Treatment: ALE of R. communise0
Interactor: R. communisRicinus communise0other
Outcome: germination indexe0
Direction: reductionse0
Value: 89%e0

Not reportedComparator

Verbatim

e0
“ALE of R. communis showed maximum reductions in germination percentage (79%), germination index (89%) and seedling biomass (88%) as well as maximum delays in mean germination time (211%) and time to 50% germination (265%) of parthenium”
✓ located verbatim in the source · abstract, characters 356–591

Title

Tree species as a potential source of bio-herbicides for controllingParthenium hysterophorusL.

Muhammad Ehsan Safdar; Asif Tanveer; Abdul Khaliq; et al. Natural Product Research 2013. doi:10.1080/14786419.2013.790028

Other claims from this paper (10)

Intervention effect R. communis extract reduced parthenium germination percentage by 79%.
Intervention effect R. communis extract reduced parthenium seedling biomass by 88%.
Intervention effect R. communis extract delayed mean parthenium germination time by 211%.
Intervention effect R. communis extract delayed time to 50% parthenium germination by 265%.
Intervention effect Z. mauritiana extract reduced parthenium seedling length by 47%.
Intervention effect Z. mauritiana extract reduced parthenium seedling vigour index by 97%.
Observation R. communis extract had an LC50 of 1.04% against parthenium.
Observation Z. mauritiana extract had an LC50 of 1.44% against parthenium.
Recommendation The authors identify R. communis as a potential bio-herbicide source against the weed.
Recommendation The authors identify Z. mauritiana as a potential bio-herbicide source against the weed.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

R. communis extract reduced parthenium seedling biomass by 88%.

Taxon: partheniumPartheniume0
Treatment: ALE of R. communise0
Interactor: R. communisRicinus communise0other
Outcome: seedling biomasse0
Direction: reductionse0
Value: 88%e0

Not reportedComparator

Verbatim

e0
“ALE of R. communis showed maximum reductions in germination percentage (79%), germination index (89%) and seedling biomass (88%) as well as maximum delays in mean germination time (211%) and time to 50% germination (265%) of parthenium”
✓ located verbatim in the source · abstract, characters 356–591

Title

Tree species as a potential source of bio-herbicides for controllingParthenium hysterophorusL.

Muhammad Ehsan Safdar; Asif Tanveer; Abdul Khaliq; et al. Natural Product Research 2013. doi:10.1080/14786419.2013.790028

Other claims from this paper (10)

Intervention effect R. communis extract reduced parthenium germination percentage by 79%.
Intervention effect R. communis extract reduced parthenium germination index by 89%.
Intervention effect R. communis extract delayed mean parthenium germination time by 211%.
Intervention effect R. communis extract delayed time to 50% parthenium germination by 265%.
Intervention effect Z. mauritiana extract reduced parthenium seedling length by 47%.
Intervention effect Z. mauritiana extract reduced parthenium seedling vigour index by 97%.
Observation R. communis extract had an LC50 of 1.04% against parthenium.
Observation Z. mauritiana extract had an LC50 of 1.44% against parthenium.
Recommendation The authors identify R. communis as a potential bio-herbicide source against the weed.
Recommendation The authors identify Z. mauritiana as a potential bio-herbicide source against the weed.