Abstract
Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize, was recently recorded in the Mediterranean Region of Turkey. The pest is considered to be an invasive species, displacing indigenous stem borers in many parts of the world. The aim of the study was to determine the effect of commonly used insecticides in a maize production system in Turkey on egg hatch and mortality of first instar larvae of C. partellus under laboratory conditions (27±2ºC, 70% RH and 14:10 h L:D photoperiod) at the Plant Protection Department, Faculty of Agriculture, University of Çukurova. Eight insecticides registered for indigenous lepidopteran pests were used at the recommended rates. The percentage of hatched egg masses were significantly different. The smallest percentage was 30.6% with deltamethrin. The percentages of hatched egg masses were greater than 80% for all other insecticides. Mortality of hatched larvae was significantly different. The highest and lowest mortalities of hatched larvae were 84.5% and 38.2% with emamectin-benzoate and lambda-cyhalothrin, respectively. Seventy-two h after exposure of the first instar larvae to sprayed maize leaf disks, the lowest and highest mortalities were 62.6% and 96.7% with indoxacarb and emamectin-benzoate, respectively. Survival analyses revealed that hazard ratios ranged from 4.91 (95% CI: 1.66-14.6) to 15.6 (95% CI: 5.33-45.6) with chlorpyrifos-ethyl and emamectin-benzoate, respectively. The mortality of first instar larvae was about 16, 10 and 9 times that of the control with emamectin-benzoate, lambda-cyhalothrin and deltamethrin, respectively. Feeding activity of larval stage was reduced by all treatments. The implications of this study are discussed.
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Claims 12
Claim · model-written summary
Deltamethrin yielded the smallest percentage of hatched Chilo partellus egg masses, 30.6%.
- Treatment
- deltamethrine0
- Interactor
- Chilo partellus
_Figure_27c.jpg?width=60)
Chilo partelluse1pest - Outcome
- percentage of hatched egg massese0
- Direction
- smalleste0
- Value
- 30.6%e0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Figure_27c.jpg?width=500)
Verbatim
e0“The percentage of hatched egg masses were significantly different. The smallest percentage was 30.6% with deltamethrin.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
All other insecticides yielded more than 80% hatched egg masses.
- Treatment
- all other insecticidese0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- percentages of hatched egg massese0
- Direction
- greater thane0
- Value
- 80%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentages of hatched egg masses were greater than 80% for all other insecticides.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
Emamectin-benzoate produced the highest mortality of hatched larvae, 84.5%.
- Treatment
- emamectin-benzoatee0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- mortalities of hatched larvaee0
- Direction
- higheste0
- Value
- 84.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mortality of hatched larvae was significantly different. The highest and lowest mortalities of hatched larvae were 84.5% and 38.2% with emamectin-benzoate and lambda-cyhalothrin, respectively.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
Lambda-cyhalothrin produced the lowest mortality of hatched larvae, 38.2%.
- Treatment
- lambda-cyhalothrine0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- mortalities of hatched larvaee0
- Direction
- loweste0
- Value
- 38.2%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mortality of hatched larvae was significantly different. The highest and lowest mortalities of hatched larvae were 84.5% and 38.2% with emamectin-benzoate and lambda-cyhalothrin, respectively.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
Indoxacarb gave the lowest first instar larval mortality after 72 h on sprayed maize leaf disks, 62.6%.
- Treatment
- indoxacarbe0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- mortalitiese0
- Direction
- loweste0
- Value
- 62.6%e0
- Qualifier
- Seventy-two h after exposure of the first instar larvae to sprayed maize leaf diskse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seventy-two h after exposure of the first instar larvae to sprayed maize leaf disks, the lowest and highest mortalities were 62.6% and 96.7% with indoxacarb and emamectin-benzoate, respectively.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
Emamectin-benzoate gave the highest first instar larval mortality after 72 h on sprayed maize leaf disks, 96.7%.
- Treatment
- emamectin-benzoatee0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- mortalitiese0
- Direction
- higheste0
- Value
- 96.7%e0
- Qualifier
- Seventy-two h after exposure of the first instar larvae to sprayed maize leaf diskse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seventy-two h after exposure of the first instar larvae to sprayed maize leaf disks, the lowest and highest mortalities were 62.6% and 96.7% with indoxacarb and emamectin-benzoate, respectively.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
Chlorpyrifos-ethyl had a larval survival hazard ratio of 4.91.
- Treatment
- chlorpyrifos-ethyle0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- hazard ratiose0
- Direction
- ranged frome0
- Value
- 4.91e0
- Qualifier
- 95% CI: 1.66-14.6e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hazard ratios ranged from 4.91 (95% CI: 1.66-14.6) to 15.6 (95% CI: 5.33-45.6) with chlorpyrifos-ethyl and emamectin-benzoate, respectively.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
Emamectin-benzoate had a larval survival hazard ratio of 15.6.
- Treatment
- emamectin-benzoatee0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- hazard ratiose0
- Direction
- ranged frome0
- Value
- 15.6e0
- Qualifier
- 95% CI: 5.33-45.6e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“hazard ratios ranged from 4.91 (95% CI: 1.66-14.6) to 15.6 (95% CI: 5.33-45.6) with chlorpyrifos-ethyl and emamectin-benzoate, respectively.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
First instar larval mortality with emamectin-benzoate was about 16 times control.
- Treatment
- emamectin-benzoatee0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- mortality of first instar larvaee0
- Direction
- times that ofe0
- Value
- 16e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mortality of first instar larvae was about 16, 10 and 9 times that of the control with emamectin-benzoate, lambda-cyhalothrin and deltamethrin, respectively.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
First instar larval mortality with lambda-cyhalothrin was about 10 times control.
- Treatment
- lambda-cyhalothrine0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- mortality of first instar larvaee0
- Direction
- times that ofe0
- Value
- 10e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mortality of first instar larvae was about 16, 10 and 9 times that of the control with emamectin-benzoate, lambda-cyhalothrin and deltamethrin, respectively.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
First instar larval mortality with deltamethrin was about 9 times control.
- Treatment
- deltamethrine0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- mortality of first instar larvaee0
- Direction
- times that ofe0
- Value
- 9e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mortality of first instar larvae was about 16, 10 and 9 times that of the control with emamectin-benzoate, lambda-cyhalothrin and deltamethrin, respectively.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
Claim · model-written summary
All insecticide treatments reduced larval feeding activity.
- Treatment
- all treatmentse0
- Interactor
- Chilo partellusChilo partelluse1pest
- Outcome
- Feeding activity of larval stagee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Feeding activity of larval stage was reduced by all treatments.”
e1“Chilo partellus Swinhoe, 1885 (Lepidoptera: Crambidae), a destructive pest of maize”
The same questions in other papers
emamectin benzoate · Chilo partellus · Zea mays (maize)Results agree
2 papers in the same direction as this paper
- positive
- positive
chlorpyrifos · Chilo partellus · Zea mays (maize)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
deltamethrin · Chilo partellus · Zea mays (maize)Results agree
4 papers in the same direction as this paper
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- positive
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1 paper more in this group
See all 5 papers →insecticide · Chilo partellus · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
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See all 9 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.