Abstract
ABSTRACT: Pequi fruit peels contain steroids, triterpenes, flavonoids, tannins, and saponins, compounds that are potentially useful for integrated pest management. As such, the aim of this study was to evaluate the insecticidal activity of aqueous extracts of pequi fruit peels on Spodoptera frugiperda. Field-grown corn plants of the cultivar ‘Al Alvaré’ were sprayed with extract concentrations of 0.8%, 2.5%, 5%, and 10% (v/v) 40 and 47 days after germination. The pequi peels were chopped, oven dried (65°C for 72 hours), and ground in a grinding mill. The resulting powder was used to prepare a base-line extract (10%), and the other concentrations evaluated were prepared by diluting this extract. The intensity of the damage caused by S. frugiperda caterpillars was evaluated 43, 46, 50, and 53 days after germination, using a visual scoring scale. Application of the extract decreased the amount of damage caused by the caterpillars. The 5% extract concentration was the most effective, while the 10% extract concentration showed evidence of phytotoxicity after the second spraying. These results suggest that the pequi extract is toxic to the S. frugiperda caterpillars and can be used for the management of this pest.
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Claims 5
Claim · model-written summary
Application of the pequi extract decreased caterpillar damage to field-grown corn.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- Application of the extracte1
- Interactor
- caterpillarse1pest
- Outcome
- amount of damagee1
- Direction
- decreasede1
- Setting
- Field-growne0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field-grown corn plants”
e1“Application of the extract decreased the amount of damage caused by the caterpillars”
Claim · model-written summary
The 5% pequi extract concentration was the most effective treatment in corn.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- 5% extract concentratione1
- Outcome
- most effectivee1
- Direction
- most effectivee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field-grown corn plants”
e1“The 5% extract concentration was the most effective”
Claim · model-written summary
The 10% pequi extract concentration showed phytotoxicity in corn after the second spraying.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- 10% extract concentratione1
- Outcome
- phytotoxicitye1
- Qualifier
- after the second sprayinge1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field-grown corn plants”
e1“the 10% extract concentration showed evidence of phytotoxicity after the second spraying”
Claim · model-written summary
Pequi extract can be used for management of S. frugiperda in corn.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- pequi extracte1
- Interactor
- S. frugiperda caterpillars
.jpg?width=60)
Spodoptera frugiperdae1pest - Outcome
- management of this peste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Aqueous extract of pequi fruit to control Spodoptera frugiperda in corn”
e1“These results suggest that the pequi extract is toxic to the S. frugiperda caterpillars and can be used for the management of this pest”
Claim · model-written summary
Pequi extract is toxic to S. frugiperda caterpillars.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- pequi extracte1
- Interactor
- S. frugiperda caterpillarsSpodoptera frugiperdae1pest
- Outcome
- toxice1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Field-grown corn plants”
e1“These results suggest that the pequi extract is toxic to the S. frugiperda caterpillars and can be used for the management of this pest”
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See all 90 papers →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.