Abstract
Laboratory and field evaluation on the effect of sequential application of dicofol, omethoate and cypermethrin insecticides on the susceptibility, biology and population density of the mite Tetranychus cinnabarinus were studied through the course of the present investigation. The results obtained may be sum.marized as follows: 1. The susceptibility of adult female mites to dicofol, omethoate and cypermethrin applied sequentially over three generations was studied. Susceptibility was varied due to the type of chemical as well as to the scheme of insecticidal sequences used. 2. Biological studies indicate that the life span of selected mites was extended, this was more pronounced in the schemes of (cypermethrin / cypermethrin / cypermethrin) - and (cypermethrin / dicofol / omethoate) - selected strains. Also, egg production was significantly increased in case of (cypermethrin / cypermethrin / cypermethrin) - selected strain, while decreased in case of (omethoate / omethoate / omethoate) - selected strain. The percent of hatchability was significantly decreased, this was highly occurred in (cypermethrin / omethoate / dicofol) - selected strain. 3. Field studies show that plots sprayed successively three times with dicofol recorded the highest reduction in mite population infesting soybean plants. The contrary was obtained in plots sprayed successively three times with cypermethrin. This indicate the necessity of using specific potent acaricide on soybean in case cypermethrin is used to control the cotton leafworm to avoid outbreak of mite infestation.
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Claims 9
Claim · model-written summary
Susceptibility of adult female mites varied with the type of chemical and the scheme of insecticide sequences.
- Taxon
- Tetranychus cinnabarinus
Tetranychus cinnabarinust0 - Treatment
- type of chemical as well as to the scheme of insecticidal sequencese0
- Outcome
- Susceptibilitye0
- Direction
- variede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tetranychus cinnabarinus”
e0“Susceptibility was varied due to the type of chemical as well as to the scheme of insecticidal sequences used”
Claim · model-written summary
Mite life span was extended in cypermethrin / cypermethrin / cypermethrin selected strains.
- Taxon
- Tetranychus cinnabarinusTetranychus cinnabarinust0
- Treatment
- (cypermethrin / cypermethrin / cypermethrin)e1
- Outcome
- life spane1
- Direction
- extendede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tetranychus cinnabarinus”
e1“the life span of selected mites was extended, this was more pronounced in the schemes of (cypermethrin / cypermethrin / cypermethrin) - and (cypermethrin / dicofol / omethoate) - selected strains”
Claim · model-written summary
Mite life span was extended in cypermethrin / dicofol / omethoate selected strains.
- Taxon
- Tetranychus cinnabarinusTetranychus cinnabarinust0
- Treatment
- (cypermethrin / dicofol / omethoate)e1
- Outcome
- life spane1
- Direction
- extendede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tetranychus cinnabarinus”
e1“the life span of selected mites was extended, this was more pronounced in the schemes of (cypermethrin / cypermethrin / cypermethrin) - and (cypermethrin / dicofol / omethoate) - selected strains”
Claim · model-written summary
Egg production was significantly increased in the cypermethrin / cypermethrin / cypermethrin selected strain.
- Taxon
- Tetranychus cinnabarinusTetranychus cinnabarinust0
- Treatment
- (cypermethrin / cypermethrin / cypermethrin)e2
- Outcome
- egg productione2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tetranychus cinnabarinus”
e2“egg production was significantly increased in case of (cypermethrin / cypermethrin / cypermethrin) - selected strain, while decreased in case of (omethoate / omethoate / omethoate) - selected strain”
Claim · model-written summary
Egg production decreased in the omethoate / omethoate / omethoate selected strain.
- Taxon
- Tetranychus cinnabarinusTetranychus cinnabarinust0
- Treatment
- (omethoate / omethoate / omethoate)e2
- Outcome
- egg productione2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tetranychus cinnabarinus”
e2“egg production was significantly increased in case of (cypermethrin / cypermethrin / cypermethrin) - selected strain, while decreased in case of (omethoate / omethoate / omethoate) - selected strain”
Claim · model-written summary
Percent hatchability was significantly decreased, most strongly in the cypermethrin / omethoate / dicofol selected strain.
- Taxon
- Tetranychus cinnabarinusTetranychus cinnabarinust0
- Treatment
- (cypermethrin / omethoate / dicofol)e3
- Outcome
- percent of hatchabilitye3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tetranychus cinnabarinus”
e3“The percent of hatchability was significantly decreased, this was highly occurred in (cypermethrin / omethoate / dicofol) - selected strain”
Claim · model-written summary
Soybean plots sprayed successively three times with dicofol had the highest reduction in mite population.
- Taxon
- soybean
Glycine maxe4 - Treatment
- sprayed successively three times with dicofole4
- Interactor
- mitee4pest
- Outcome
- mite populatione4
- Direction
- highest reductione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“plots sprayed successively three times with dicofol recorded the highest reduction in mite population infesting soybean plants”
Claim · model-written summary
The contrary was obtained in soybean plots sprayed successively three times with cypermethrin.
- Taxon
- soybeanGlycine maxe4
- Treatment
- sprayed successively three times with cypermethrine5
- Interactor
- mitee4pest
- Outcome
- mite populatione4
- Direction
- contrarye5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“plots sprayed successively three times with dicofol recorded the highest reduction in mite population infesting soybean plants”
e5“The contrary was obtained in plots sprayed successively three times with cypermethrin”
Claim · model-written summary
A specific potent acaricide is needed on soybean when cypermethrin is used against cotton leafworm, to avoid mite outbreak.
- Taxon
- soybeanGlycine maxe6
- Outcome
- avoid outbreak of mite infestatione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“necessity of using specific potent acaricide on soybean in case cypermethrin is used to control the cotton leafworm to avoid outbreak of mite infestation”
The same questions in other papers
cypermethrin · pest · Glycine max (soybean)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
application · pest · Glycine max (soybean)Positive and negative results
24 papers in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- negative
26 papers more in this group
See all 30 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.