Abstract
Sucking pest complex (yellow mite, thrips and aphids) in chilli cause considerable economic damage to chilli cultivation. A field experiment was conducted to assess the bioefficacy, phytotoxicity and residue dynamics of fipronil 5% SC in chilli crop. Three doses of fipronil (20, 40, 80 g ai ha-1) along with a conventional insecticide (dimethoate 30% EC @ 300 g ai ha-1) and untreated control were tested. Applications of fipronil at 40 and 80 g ai ha-1 were equally effective against chilli thrips, mites and aphids and had significantly higher green chilli fruit yield. After three rounds of foliar application of 40 g ai ha-1 at an interval of 15 days, population of thrips, mites and aphids were reduced by 79.2, 32.7 and 78.5%, respectively, as compared to untreated control. Applications of fipronil 5% SC did not cause any phytotoxic symptoms. Natural enemies (predatory pentatomid bug, lady bird beetle and spider) were not affected by fipronil application. A laboratory validated method using gas chromatography equipped with micro-electron capture detector was employed. The half-lives of fipronil in green chilli were estimated to be 2.3, 3.1 and 2.7 days for 20, 40 and 80 g ai ha-1 treatments, respectively. The dietary exposures of the residues on each sampling day based on the average daily consumption of 0.0055 kg chilli per day were less than the maximum permissible intake (MPI) of 0.0032 mg person-1 day-1 for 20 and 40 g ai ha-1 and dietary exposures was less than MPI value 1 days after application in 80 g ai ha-1 treatment. The results are useful for schedule spraying of fipronil for the management of insect pest in chilli.
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Claims 13
Claim · model-written summary
Fipronil at 40 g ai ha-1 was effective against the chilli sucking pest complex.
- Taxon
- chillie1
- Treatment
- fipronil at 40e0
- Interactor
- chilli thripse0pest
- Outcome
- effective against chilli thrips, mites and aphidse0
Not reportedComparatorDirection
Verbatim
e0“Applications of fipronil at 40 and 80 g ai ha-1 were equally effective against chilli thrips, mites and aphids”
e1“chilli crop”
Claim · model-written summary
Fipronil at 80 g ai ha-1 was equally effective against the chilli sucking pest complex.
- Taxon
- chillie1
- Treatment
- fipronil at 40 and 80 g ai ha-1e0
- Interactor
- chilli thripse0pest
- Outcome
- effective against chilli thrips, mites and aphidse0
Not reportedComparatorDirection
Verbatim
e0“Applications of fipronil at 40 and 80 g ai ha-1 were equally effective against chilli thrips, mites and aphids”
e1“chilli crop”
Claim · model-written summary
Fipronil at 40 and 80 g ai ha-1 gave significantly higher green chilli yield.
- Taxon
- chillie0
- Treatment
- fipronil at 40 and 80 g ai ha-1e0
- Outcome
- green chilli fruit yielde0
- Direction
- highere0
Not reportedComparator
Verbatim
e0“Applications of fipronil at 40 and 80 g ai ha-1 were equally effective against chilli thrips, mites and aphids and had significantly higher green chilli fruit yield”
Claim · model-written summary
Three foliar applications at 40 g ai ha-1 reduced thrips by 79.2% versus untreated control.
- Taxon
- chillie1
- Treatment
- foliar application of 40 g ai ha-1e0
- Outcome
- population of thripse0
- Direction
- reducede0
- Value
- 79.2e0
- Comparator
- untreated controle0
ThripsOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After three rounds of foliar application of 40 g ai ha-1 at an interval of 15 days, population of thrips, mites and aphids were reduced by 79.2, 32.7 and 78.5%, respectively, as compared to untreated control”
e1“chilli crop”
Claim · model-written summary
Three foliar applications at 40 g ai ha-1 reduced mites by 32.7% versus untreated control.
Verbatim
e0“After three rounds of foliar application of 40 g ai ha-1 at an interval of 15 days, population of thrips, mites and aphids were reduced by 79.2, 32.7 and 78.5%, respectively, as compared to untreated control”
e1“chilli crop”
Claim · model-written summary
Three foliar applications at 40 g ai ha-1 reduced aphids by 78.5% versus untreated control.
Verbatim
e0“After three rounds of foliar application of 40 g ai ha-1 at an interval of 15 days, population of thrips, mites and aphids were reduced by 79.2, 32.7 and 78.5%, respectively, as compared to untreated control”
e1“chilli crop”
Claim · model-written summary
Fipronil caused no phytotoxic symptoms in chilli.
Not reportedComparator
Verbatim
e0“Applications of fipronil 5% SC did not cause any phytotoxic symptoms”
e1“chilli crop”
Claim · model-written summary
Fipronil did not affect natural enemies.
- Taxon
- chillie1
- Treatment
- fipronil applicatione0
- Interactor
- predatory pentatomid buge0biocontrol_agent
- Outcome
- Natural enemiese0
- Direction
- not affectede0
Not reportedComparator
Verbatim
e0“Natural enemies (predatory pentatomid bug, lady bird beetle and spider) were not affected by fipronil application”
e1“chilli crop”
Claim · model-written summary
Fipronil half-life in green chilli was 2.3 days after the 20 g ai ha-1 treatment.
Verbatim
e0“The half-lives of fipronil in green chilli were estimated to be 2.3, 3.1 and 2.7 days for 20, 40 and 80 g ai ha-1 treatments, respectively”
Claim · model-written summary
Fipronil half-life in green chilli was 3.1 days after the 40 g ai ha-1 treatment.
Verbatim
e0“The half-lives of fipronil in green chilli were estimated to be 2.3, 3.1 and 2.7 days for 20, 40 and 80 g ai ha-1 treatments, respectively”
Claim · model-written summary
Fipronil half-life in green chilli was 2.7 days after the 80 g ai ha-1 treatment.
Verbatim
e0“The half-lives of fipronil in green chilli were estimated to be 2.3, 3.1 and 2.7 days for 20, 40 and 80 g ai ha-1 treatments, respectively”
Claim · model-written summary
Dietary fipronil exposure was below the permissible intake after 20 and 40 g ai ha-1 applications.
- Outcome
- dietary exposures of the residuese0
- Direction
- less thane0
- Comparator
- maximum permissible intakee0
Not reportedTaxon
Verbatim
e0“dietary exposures of the residues on each sampling day based on the average daily consumption of 0.0055 kg chilli per day were less than the maximum permissible intake (MPI) of 0.0032 mg person-1 day-1 for 20 and 40 g ai ha-1”
Claim · model-written summary
Dietary exposure fell below permissible intake one day after the 80 g ai ha-1 treatment.
- Treatment
- 80 g ai ha-1 treatmente0
- Outcome
- dietary exposurese0
- Direction
- less thane0
- Comparator
- MPI valuee0
Not reportedTaxon
Verbatim
e0“dietary exposures was less than MPI value 1 days after application in 80 g ai ha-1 treatment”
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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.