Abstract
Possible causes of brown plant hopper resurgence were determined at the net-house of Entomology Division of Bangladesh Rice Research Institute (BRRI) during 2015. Causes of resurgence in the form of resurgence ratios were higher with acetamiprid, acephate, chlorpyrifos, cypermethrin, deltamethrin, fenvalerate, lambda cyhalothrin, thiamethoxam insecticides compared to imidacloprid, cartap, dinotefuran, isoprocarb /MIPC, phenthoate, pymetrozine when even applied at recommended dose. However, thiamethoxam, imidacloprid, isoprocarb / MIPC and cartap applied at sub-lethal dose produced higher resurgence ratio of BPH than others. Isoprocarb / MIPC, a commonly used recommended insecticide was found to have a higher resurgence ratio with the insecticide treatment at the egg stage (1.71) and combination of all stages (0.82). These insecticides influenced on the growth and reproductive physiology of rice brown planthopper and consequently resurgence ratio ranged increased. SAARC J. Agri., 18(1): 117-128 (2020)
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Claims 5
Claim · model-written summary
Eight named insecticides produced higher planthopper resurgence ratios than six comparators at recommended dose.
- Taxon
- rice
Oryza sativae1 - Treatment
- acetamiprid, acephate, chlorpyrifos, cypermethrin, deltamethrin, fenvalerate, lambda cyhalothrin, thiamethoxam insecticidese0
- Interactor
- brown planthopper
Nilaparvata lugense1pest - Outcome
- resurgence ratiose0
- Direction
- highere0
- Comparator
- imidacloprid, cartap, dinotefuran, isoprocarb /MIPC, phenthoate, pymetrozinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resurgence ratios were higher with acetamiprid, acephate, chlorpyrifos, cypermethrin, deltamethrin, fenvalerate, lambda cyhalothrin, thiamethoxam insecticides compared to imidacloprid, cartap, dinotefuran, isoprocarb /MIPC, phenthoate, pymetrozine when even applied at recommended dose.”
e1“rice brown planthopper”
Claim · model-written summary
Sublethal thiamethoxam, imidacloprid, isoprocarb/MIPC and cartap produced higher BPH resurgence ratios than other treatments.
- Taxon
- riceOryza sativae1
- Treatment
- thiamethoxam, imidacloprid, isoprocarb / MIPC and cartap applied at sub-lethal dosee0
- Interactor
- brown planthopperNilaparvata lugense1pest
- Outcome
- resurgence ratio of BPHe0
- Direction
- highere0
- Comparator
- otherse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thiamethoxam, imidacloprid, isoprocarb / MIPC and cartap applied at sub-lethal dose produced higher resurgence ratio of BPH than others.”
e1“rice brown planthopper”
Claim · model-written summary
Isoprocarb/MIPC treatment at the egg stage produced a resurgence ratio of 1.71.
- Taxon
- riceOryza sativae1
- Organ / stage
- egg stagee0
- Treatment
- Isoprocarb / MIPCe0
- Interactor
- brown planthopperNilaparvata lugense1pest
- Outcome
- resurgence ratioe0
- Direction
- highere0
- Value
- 1.71e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isoprocarb / MIPC, a commonly used recommended insecticide was found to have a higher resurgence ratio with the insecticide treatment at the egg stage (1.71)”
e1“rice brown planthopper”
Claim · model-written summary
Isoprocarb/MIPC treatment across all stages produced a resurgence ratio of 0.82.
- Taxon
- riceOryza sativae2
- Organ / stage
- all stagese0
- Treatment
- Isoprocarb / MIPCe1
- Interactor
- brown planthopperNilaparvata lugense2pest
- Outcome
- resurgence ratioe1
- Direction
- highere1
- Value
- 0.82e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combination of all stages (0.82)”
e1“Isoprocarb / MIPC, a commonly used recommended insecticide was found to have a higher resurgence ratio”
e2“rice brown planthopper”
Claim · model-written summary
The insecticides influenced growth and reproductive physiology of the rice planthopper and increased resurgence ratios.
- Taxon
- riceOryza sativae0
- Treatment
- These insecticidese0
- Interactor
- brown planthopperNilaparvata lugense0pest
- Outcome
- resurgence ratioe0
- Direction
- increasede0
- Qualifier
- growth and reproductive physiologye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These insecticides influenced on the growth and reproductive physiology of rice brown planthopper and consequently resurgence ratio ranged increased.”
The same questions in other papers
isoprocarb · Nilaparvata lugens · Oryza sativa (rice)Positive and negative results
1 in the opposite direction
- positive
lambda-cyhalothrin · Nilaparvata lugens · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
cartap · Nilaparvata lugens · Oryza sativa (rice)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
acetamiprid · Nilaparvata lugens · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- negative
- positive
- positive
thiamethoxam · Nilaparvata lugens · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 papers →acephate · Nilaparvata lugens · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →deltamethrin · Nilaparvata lugens · Oryza sativa (rice)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction
- negative
- positive
- positive
4 papers more in this group
See all 8 papers →imidacloprid · Nilaparvata lugens · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 papers →8 of 12 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.