Abstract
The efficacies of some next-generation insecticides against the rice yellow stem borer (YSB), Scirpophaga incertulas (Walk.), and their compatibilities with natural enemies were investigated during 2014 and 2015. Three newer insecticides, chlorantraniliprole 0.4% G, dinotefuran 20% SG, and methoxyfenozide 24% SC, and two commonly used insecticides, carbufuran 5 G and quinalphos 25 EC, were evaluated in the field for their efficacies against YSB and their non-target effects on natural enemies. Application of chlorantraniliprole 0.4% G at 10.96 kg/hm2 resulted in the greatest reduction in YSB infestation (deadhearts and whiteheads) and greatest increase of yield compared to the untreated control plots, followed by methoxyfenozide 24% SC at 0.41 L/hm2, dinotefuran 20% SG at 0.15 kg/hm2, carbufuran 5 G at 10.96 kg/hm2, and quinalphos 25 EC at 1.50 L/hm2. All the insecticides reduced the numbers of predators viz., lady bird beetles, wolf spiders, carabid beetles, earwigs, green mirid bugs, and damselflies. Numbers of adults of the egg parasitoids Trichogramma sp., Telenomus sp. and Tetrastichus sp. were significantly reduced in insecticide-treated plots compared to untreated control plots. In all field trials, the harmful effects of the five insecticides were in the following rank order (least harmful to most harmful): chlorantraniliprole 0.4% G, carbufuran 5 G, dinotefuran 20% SG, methoxyfenozide 24% SC, and quinalphos 25 EC. On the basis of reduction in YSB infestation, increase in grain yield, and compatibility with natural enemies, chlorantraniliprole 0.4% G was proved to be the best of all the insecticides for YSB management system, although the study suggested minimizing its retail price for enhancement of cost effectiveness in farmers’ fields.
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Claims 8
Claim · model-written summary
Chlorantraniliprole gave the greatest reduction in yellow stem borer infestation relative to untreated plots.
- Taxon
- Rice
Oryza sativat0 - Treatment
- chlorantraniliprole 0.4% G at 10.96 kg/hm2e0
- Interactor
- YSBe0pest
- Outcome
- YSB infestation (deadhearts and whiteheads)e0
- Direction
- greatest reductione0
- Comparator
- untreated control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Ecosystem”
e0“Application of chlorantraniliprole 0.4% G at 10.96 kg/hm2 resulted in the greatest reduction in YSB infestation (deadhearts and whiteheads) and greatest increase of yield compared to the untreated control plots”
Claim · model-written summary
Chlorantraniliprole gave the greatest yield increase relative to untreated plots.
- Taxon
- RiceOryza sativat0
- Treatment
- chlorantraniliprole 0.4% G at 10.96 kg/hm2e0
- Outcome
- yielde0
- Direction
- greatest increasee0
- Comparator
- untreated control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Ecosystem”
e0“Application of chlorantraniliprole 0.4% G at 10.96 kg/hm2 resulted in the greatest reduction in YSB infestation (deadhearts and whiteheads) and greatest increase of yield compared to the untreated control plots”
Claim · model-written summary
Efficacy after chlorantraniliprole ranked methoxyfenozide, dinotefuran, carbufuran and quinalphos in that order.
- Taxon
- RiceOryza sativat0
- Outcome
- followed by methoxyfenozide 24% SC at 0.41 L/hm2, dinotefuran 20% SG at 0.15 kg/hm2, carbufuran 5 G at 10.96 kg/hm2, and quinalphos 25 EC at 1.50 L/hm2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Ecosystem”
e0“followed by methoxyfenozide 24% SC at 0.41 L/hm2, dinotefuran 20% SG at 0.15 kg/hm2, carbufuran 5 G at 10.96 kg/hm2, and quinalphos 25 EC at 1.50 L/hm2”
Claim · model-written summary
All tested insecticides reduced predator numbers.
- Taxon
- RiceOryza sativat0
- Treatment
- All the insecticidese0
- Interactor
- predatorse0other
- Outcome
- numbers of predatorse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Ecosystem”
e0“All the insecticides reduced the numbers of predators viz., lady bird beetles, wolf spiders, carabid beetles, earwigs, green mirid bugs, and damselflies”
Claim · model-written summary
Insecticide treatment significantly reduced egg parasitoid adults relative to untreated plots.
- Taxon
- RiceOryza sativat0
- Treatment
- insecticide-treated plotse0
- Interactor
- egg parasitoidse0other
- Outcome
- Numbers of adults of the egg parasitoids Trichogramma sp., Telenomus sp. and Tetrastichus sp.e0
- Direction
- reducede0
- Comparator
- untreated control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Ecosystem”
e0“Numbers of adults of the egg parasitoids Trichogramma sp., Telenomus sp. and Tetrastichus sp. were significantly reduced in insecticide-treated plots compared to untreated control plots”
Claim · model-written summary
Harm to natural enemies ranked from least to most as chlorantraniliprole, carbufuran, dinotefuran, methoxyfenozide and quinalphos.
- Taxon
- RiceOryza sativat0
- Outcome
- harmful effects of the five insecticidese0
- Qualifier
- least harmful to most harmfule0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Ecosystem”
e0“the harmful effects of the five insecticides were in the following rank order (least harmful to most harmful): chlorantraniliprole 0.4% G, carbufuran 5 G, dinotefuran 20% SG, methoxyfenozide 24% SC, and quinalphos 25 EC”
Claim · model-written summary
The authors judged chlorantraniliprole the best insecticide for yellow stem borer management.
- Taxon
- RiceOryza sativat0
- Interactor
- YSBe0pest
- Outcome
- best of all the insecticides for YSB management systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Ecosystem”
e0“chlorantraniliprole 0.4% G was proved to be the best of all the insecticides for YSB management system”
Claim · model-written summary
The authors suggested reducing the retail price of chlorantraniliprole to improve cost effectiveness in farmers’ fields.
- Taxon
- RiceOryza sativat0
- Outcome
- minimizing its retail price for enhancement of cost effectiveness in farmers’ fieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Ecosystem”
e0“minimizing its retail price for enhancement of cost effectiveness in farmers’ fields”
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See all 6 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.