Abstract
Oils of andiroba (Carapa guianensis Aubl.), copaiba (Copaifera sp.), Eucaliptus globulus Labill. and Eucaliptus citriodora Hook., neem (Azadirachta indica A. Juss), eugenol, souari nut (Caryocar brasiliense Camb.), rosemary (Lippia gracillis HBK.), and cedar (Cedrela fissilis Vell.) were evaluated in adults of Sitophilus zeamais Mots. (Coleoptera: Curculionidae). In the non-choice test, 20 g of corn grains per plot were treated with 50¿L of each oil and homogenized for two minutes. The plot was infested with eight 0 to 15 days-old S. zeamais adults. The E. globulus, eugenol, rosemary, and neem oils caused 100% mortality in S. zeamais adults. Except for copaiba, all oils caused mortality above 87% and the reduction in emergence of 100%. In the free-choice tests, arenas consisting of two plastic containers symmetrically interconnected to a central box by two plastic tubes were used. Twenty grams of non-treated corn (control) were placed in one of the boxes and the same amount of grain treated with 50¿L of each oil comprised the other treatment. Sixteen non-sexed S. zeamais adults (0-15 days old) were released in the central box. The rosemary, E. citriodora, eugenol and copaiba oils were the most repellent for S. zeamais adults, with repellence percentage varying from 97.3 to 87.7. Rosemary, andiroba, neem, and cedar reduced S. zeamais emergence in 100%, while the reduction caused by the other oils ranged from 72.7 to 97.9%.
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Claims 5
Claim · model-written summary
E. globulus, eugenol, rosemary, and neem oils caused complete adult weevil mortality.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- E. globulus, eugenol, rosemary, and neem oilse1
- Interactor
- S. zeamais
Sitophilus zeamaise1pest - Outcome
- mortality in S. zeamais adultse1
- Value
- 100%e1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn grains”
e1“The E. globulus, eugenol, rosemary, and neem oils caused 100% mortality in S. zeamais adults”
Claim · model-written summary
Except copaiba, oils caused over 87% adult mortality.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- all oilse1
- Outcome
- mortalitye1
- Value
- above 87%e1
- Qualifier
- Except for copaibae1
Not reportedInteractorComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn grains”
e1“Except for copaiba, all oils caused mortality above 87%”
Claim · model-written summary
Rosemary, E. citriodora, eugenol, and copaiba oils were most repellent to adult weevils.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- rosemary, E. citriodora, eugenol and copaiba oilse1
- Interactor
- S. zeamaisSitophilus zeamaise1pest
- Outcome
- repellent for S. zeamais adultse1
- Direction
- most repellente1
- Value
- 97.3 to 87.7e1
- Comparator
- corn (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn (control)”
e1“The rosemary, E. citriodora, eugenol and copaiba oils were the most repellent for S. zeamais adults, with repellence percentage varying from 97.3 to 87.7”
Claim · model-written summary
Rosemary, andiroba, neem, and cedar prevented weevil emergence.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Rosemary, andiroba, neem, and cedare1
- Interactor
- S. zeamaisSitophilus zeamaise1pest
- Outcome
- S. zeamais emergencee1
- Direction
- reducede1
- Value
- 100%e1
- Comparator
- corn (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn (control)”
e1“Rosemary, andiroba, neem, and cedar reduced S. zeamais emergence in 100%”
Claim · model-written summary
Other oils reduced weevil emergence by 72.7 to 97.9%.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- other oilse1
- Interactor
- S. zeamaisSitophilus zeamaise2pest
- Outcome
- S. zeamais emergencee2
- Direction
- reductione1
- Value
- 72.7 to 97.9%e1
- Comparator
- corn (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn (control)”
e1“the reduction caused by the other oils ranged from 72.7 to 97.9%”
e2“S. zeamais emergence”
The same questions in other papers
botanical · Sitophilus zeamais · Zea mays (maize)Positive and negative results
112 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- no effect
113 papers more in this group
See all 117 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.