Abstract
Laboratory and greenhouse experiments were conducted to evaluate the effect of root zone application of some systemic insecticides for control of the brown planthopper (BPH), Nilaparvata lugens, as one of the management option to minimize the adverse effects and maximize the efficacy of insecticide application. Five systemic insecticides, namely, carbofuran, carbosulfan, diazinon, ethoprophos and imidacloprid, as granular formulation were placed in the root zone and measured the mortality, fecundity, and nymphal survivorship of the planthopper. Diazinon and ethoprophos did not show the significant mortality of the BPH. When the BPH were inoculated at the day of carbofuran treatment, adult mortality was shown almost 100% at seven days after treatment and BPH nymphs were remained very few on rice at 25 days after treatment. When carbofuran were placed 10 days before the BPH inoculation, it showed almost 100% adult mortality after one day, and no nymphs were found until 25 day after inoculation. Efficacy of carbofuran on BPH when applied in 10 day-old rice was higher than in 30 day-old rice. These results indicated that the root zone application of carbofuran can control N. lugens effectively with less adverse effect to the natural enemies inhabited on rice plants.
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Claims 8
Claim · model-written summary
Diazinon and ethoprophos did not cause significant mortality of brown planthopper on rice.
- Taxon
- rice
Oryza sativae7 - Treatment
- Diazinon and ethoprophose1
- Interactor
- BPHe1pest
- Outcome
- mortality of the BPHe1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Diazinon and ethoprophos did not show the significant mortality of the BPH”
e7“These results indicated that the root zone application of carbofuran can control N. lugens effectively with less adverse effect to the natural enemies inhabited on rice plants”
Claim · model-written summary
Carbofuran placed when BPH were inoculated gave almost 100% adult mortality at seven days after treatment.
- Taxon
- riceOryza sativae3
- Treatment
- carbofurane2
- Interactor
- BPHe2pest
- Outcome
- adult mortalitye2
- Direction
- increaseinferrede2
- Value
- almost 100%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“When the BPH were inoculated at the day of carbofuran treatment, adult mortality was shown almost 100% at seven days after treatment”
e3“BPH nymphs were remained very few on rice at 25 days after treatment”
Claim · model-written summary
Carbofuran kept BPH nymphs very few on rice at 25 days after treatment.
- Taxon
- riceOryza sativae3
- Treatment
- carbofurane2
- Interactor
- BPHe3pest
- Outcome
- BPH nymphse3
- Direction
- decreaseinferrede3
- Qualifier
- very fewe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“When the BPH were inoculated at the day of carbofuran treatment, adult mortality was shown almost 100% at seven days after treatment”
e3“BPH nymphs were remained very few on rice at 25 days after treatment”
Claim · model-written summary
Carbofuran placed 10 days before BPH inoculation gave almost 100% adult mortality after one day.
- Taxon
- riceOryza sativae3
- Treatment
- carbofuran were placed 10 days before the BPH inoculatione4
- Interactor
- BPHe4pest
- Outcome
- adult mortalitye4
- Direction
- increaseinferrede4
- Value
- almost 100%e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“BPH nymphs were remained very few on rice at 25 days after treatment”
e4“When carbofuran were placed 10 days before the BPH inoculation, it showed almost 100% adult mortality after one day”
Claim · model-written summary
Carbofuran placed 10 days before BPH inoculation gave no nymphs until 25 days after inoculation.
- Taxon
- riceOryza sativae3
- Treatment
- carbofuran were placed 10 days before the BPH inoculatione4
- Interactor
- BPHe4pest
- Outcome
- nymphs were founde5
- Qualifier
- until 25 day after inoculatione5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“BPH nymphs were remained very few on rice at 25 days after treatment”
e4“When carbofuran were placed 10 days before the BPH inoculation, it showed almost 100% adult mortality after one day”
e5“and no nymphs were found until 25 day after inoculation”
Claim · model-written summary
Carbofuran was more effective on BPH when applied to 10 day-old rice than to 30 day-old rice.
- Taxon
- riceOryza sativae6
- Organ / stage
- 10 day-old ricee6
- Treatment
- carbofurane6
- Interactor
- BPHe6pest
- Outcome
- Efficacy of carbofuran on BPHe6
- Direction
- highere6
- Comparator
- 30 day-old ricee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Efficacy of carbofuran on BPH when applied in 10 day-old rice was higher than in 30 day-old rice”
Claim · model-written summary
Root-zone application of carbofuran can control N. lugens effectively, according to the authors.
- Taxon
- riceOryza sativae7
- Treatment
- root zone application of carbofurane7
- Interactor
- N. lugens
Nilaparvata lugense7pest - Outcome
- control N. lugense7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“These results indicated that the root zone application of carbofuran can control N. lugens effectively with less adverse effect to the natural enemies inhabited on rice plants”
Claim · model-written summary
Root-zone carbofuran had less adverse effect on natural enemies inhabiting rice plants.
- Taxon
- riceOryza sativae7
- Treatment
- root zone application of carbofurane7
- Interactor
- natural enemiese7other
- Outcome
- adverse effect to the natural enemiese7
- Direction
- lesse7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“These results indicated that the root zone application of carbofuran can control N. lugens effectively with less adverse effect to the natural enemies inhabited on rice plants”
The same questions in other papers
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See all 29 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.