Abstract
Abstract Fumigant activity of the essential oil extracted from Tridax procumbens L. (Asterales: Asteraceae) by water distillation was assessed against Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), together with its effect on the germination of three Thai varieties of rice, Oryza sativa L. (Poales: Poaceae). Tridax procumbens essential oil contains 25 compounds with five principal components as 1,2-cyclooctanediol (11.49%), hexanal (5.34%), 4-heptenal (4.92%), 2,4-nonadienal (3.10%), and 1,6-dimethylhepta-1,3,5-triene (1.67%). Tridax procumbens essential oil was a fumigant toxin to S. zeamais adults with a median lethal concentration (LC50) of 1,509.79 µl/L air 24 h after exposure. The highest concentration of 250 µl/L air of T. procumbens essential oil showed low efficacy in killing adults of S. zeamais at 24 h with 10% mortality. This concentration also affected newly emerged progeny (F1) of S. zeamais compared to the control, with the highest reduction of 92.87%, and also decreased seed germination of the three varieties of Thai rice RD6, Kham Na Sinuan, and KDML at 94.25, 96.0, and 93.25%, respectively, compared with the control (98.0–98.75%). Results indicate that essential oil from T. procumbens has potential for application on stored products to control progeny of S. zeamais that cause seed damage.
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Claims 7
Claim · model-written summary
Tridax procumbens oil contained 25 compounds, including five principal components.
- Taxon
- Tridax procumbens
Tridax procumbense0 - Outcome
- compoundse0
- Value
- 25 compoundse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tridax procumbens essential oil contains 25 compounds with five principal components as 1,2-cyclooctanediol (11.49%), hexanal (5.34%), 4-heptenal (4.92%), 2,4-nonadienal (3.10%), and 1,6-dimethylhepta-1,3,5-triene (1.67%).”
Claim · model-written summary
The oil had a 24 hour LC50 against adult S. zeamais of 1,509.79 µl/L air.
- Taxon
- Oryza sativa L.
Oryza sativae0 - Treatment
- Tridax procumbens essential oile1
- Interactor
- S. zeamais
Sitophilus zeamaise1pest - Outcome
- S. zeamais adults with a median lethal concentration (LC50)e1
- Value
- 1,509.79 µl/L aire1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice, Oryza sativa L.”
e1“Tridax procumbens essential oil was a fumigant toxin to S. zeamais adults with a median lethal concentration (LC50) of 1,509.79 µl/L air 24 h after exposure.”
Claim · model-written summary
At 250 µl/L air the oil caused 10% adult mortality after 24 hours.
- Taxon
- Oryza sativa L.Oryza sativae0
- Treatment
- 250 µl/L air of T. procumbens essential oile1
- Interactor
- S. zeamaisSitophilus zeamaise1pest
- Outcome
- mortalitye1
- Value
- 10%e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice, Oryza sativa L.”
e1“The highest concentration of 250 µl/L air of T. procumbens essential oil showed low efficacy in killing adults of S. zeamais at 24 h with 10% mortality.”
Claim · model-written summary
At 250 µl/L air the oil reduced S. zeamais progeny by up to 92.87% versus control.
- Taxon
- Oryza sativa L.Oryza sativae0
- Treatment
- This concentratione1
- Interactor
- S. zeamaisSitophilus zeamaise1pest
- Outcome
- newly emerged progeny (F1) of S. zeamaise1
- Direction
- reductione1
- Value
- 92.87%e1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice, Oryza sativa L.”
e1“This concentration also affected newly emerged progeny (F1) of S. zeamais compared to the control, with the highest reduction of 92.87%”
Claim · model-written summary
The oil lowered RD6 seed germination to 94.25%.
- Taxon
- Oryza sativa L.Oryza sativae0
- Material
- RD6e1
- Outcome
- seed germinatione1
- Direction
- decreasede1
- Value
- 94.25e1
- Comparator
- the controle1
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice, Oryza sativa L.”
e1“decreased seed germination of the three varieties of Thai rice RD6, Kham Na Sinuan, and KDML at 94.25, 96.0, and 93.25%, respectively, compared with the control (98.0–98.75%).”
Claim · model-written summary
The oil lowered Kham Na Sinuan seed germination to 96.0%.
- Taxon
- Oryza sativa L.Oryza sativae0
- Material
- Kham Na Sinuane1
- Outcome
- seed germinatione1
- Direction
- decreasede1
- Value
- 96.0e1
- Comparator
- the controle1
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice, Oryza sativa L.”
e1“decreased seed germination of the three varieties of Thai rice RD6, Kham Na Sinuan, and KDML at 94.25, 96.0, and 93.25%, respectively, compared with the control (98.0–98.75%).”
Claim · model-written summary
The oil lowered KDML seed germination to 93.25%.
- Taxon
- Oryza sativa L.Oryza sativae0
- Material
- KDMLe1
- Outcome
- seed germinatione1
- Direction
- decreasede1
- Value
- 93.25%e1
- Comparator
- the controle1
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice, Oryza sativa L.”
e1“decreased seed germination of the three varieties of Thai rice RD6, Kham Na Sinuan, and KDML at 94.25, 96.0, and 93.25%, respectively, compared with the control (98.0–98.75%).”
The same questions in other papers
botanical · Sitophilus zeamais · Oryza sativa (rice)Results agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.