Abstract
The black cutworm Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae) can damage the cotton seedlings and induce destructive yield loss. Seed coating with systemic insecticides is a cost-effective alternative to control A. ipsilon during the early stage of cotton, but the control efficacy and exposure risk to honeybees remain unclear. This study evaluated the control effects of the anthranilic diamide insecticide chlorantraniliprole on A. ipsilon in cotton crops and the corresponding exposure risks to honeybees. Field studies revealed the control efficacy of chlorantraniliprole at 2 or 4 g/kg seed was greater than 75%, which was comparable to its spray control during the seedling development stage. A residual toxicity trial revealed that chlorantraniliprole treatment had a dose-response control effect on A. ipsilon during the 19 days after sowing. The residue levels of chlorantraniliprole in the stem bases and soil were found consistent with the residual toxicity against A. ipsilon. In the cotton flowering period, the highest detection frequency and residue of chlorantraniliprole were found in pollen from the plots treated with 4 g/kg seed. By using 2 independent risk assessment approaches, the exposure risk of chlorantraniliprole seed treatments were evaluated to be acceptable to honeybees. Overall, chlorantraniliprole coated with 2 g/kg seed was an effective alternative for controlling A. ipsilon at the cotton seedling stages.
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Claims 6
Claim · model-written summary
Chlorantraniliprole seed treatment at 2 or 4 g/kg seed gave control efficacy greater than 75% against A. ipsilon in cotton in field studies, comparable to spray control during seedling development.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- chlorantraniliprole at 2 or 4 g/kg seede1
- Interactor
- A. ipsilon
_Figure_22e.jpg?width=60)
Agrotis ipsilone0pest - Outcome
- control efficacye1
- Direction
- greatere1
- Value
- 75%e1
- Comparator
- spray controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Figure_22e.jpg?width=500)
Verbatim
e0“on A. ipsilon in cotton crops”
e1“the control efficacy of chlorantraniliprole at 2 or 4 g/kg seed was greater than 75%, which was comparable to its spray control”
Claim · model-written summary
Chlorantraniliprole treatment had a dose-response control effect on A. ipsilon in cotton during the 19 days after sowing.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- chlorantraniliprole treatmente1
- Interactor
- A. ipsilonAgrotis ipsilone1pest
- Outcome
- dose-response control effecte1
- Qualifier
- 19 days after sowinge1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on A. ipsilon in cotton crops”
e1“chlorantraniliprole treatment had a dose-response control effect on A. ipsilon during the 19 days after sowing”
Claim · model-written summary
Chlorantraniliprole residue levels in cotton stem bases and soil were consistent with the residual toxicity against A. ipsilon.
- Taxon
- cottonGossypium hirsutume0
- Organ / stage
- stem basese1
- Interactor
- A. ipsilonAgrotis ipsilone1pest
- Outcome
- residue levels of chlorantraniliprolee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on A. ipsilon in cotton crops”
e1“The residue levels of chlorantraniliprole in the stem bases and soil were found consistent with the residual toxicity against A. ipsilon”
Claim · model-written summary
In the cotton flowering period the highest detection frequency and residue of chlorantraniliprole were found in pollen from plots treated at 4 g/kg seed.
- Taxon
- cottonGossypium hirsutume0
- Organ / stage
- pollene0
- Treatment
- 4 g/kg seede0
- Outcome
- highest detection frequency and residue of chlorantraniliprolee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the cotton flowering period, the highest detection frequency and residue of chlorantraniliprole were found in pollen from the plots treated with 4 g/kg seed”
Claim · model-written summary
Two independent risk assessment approaches evaluated the exposure risk of chlorantraniliprole seed treatments in cotton to honeybees as acceptable.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- chlorantraniliprole seed treatmentse1
- Interactor
- honeybees
_Apis_mellifera_(female)_-_on_viburnum_tinus_flowers.jpg?width=60)
Apis melliferae1pollinator - Outcome
- exposure riske1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Apis_mellifera_(female)_-_on_viburnum_tinus_flowers.jpg?width=500)
Verbatim
e0“on A. ipsilon in cotton crops”
e1“the exposure risk of chlorantraniliprole seed treatments were evaluated to be acceptable to honeybees”
Claim · model-written summary
The authors conclude that seed coating with chlorantraniliprole at 2 g/kg seed is an effective alternative for controlling A. ipsilon at the cotton seedling stages.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- chlorantraniliprole coated with 2 g/kg seede0
- Interactor
- A. ipsilonAgrotis ipsilone0pest
- Outcome
- effective alternative for controlling A. ipsilone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“chlorantraniliprole coated with 2 g/kg seed was an effective alternative for controlling A. ipsilon at the cotton seedling stages”