Abstract
Thrips of late are becoming more resurgent in agro-ecosystems especially in India and South Asian countries. One of the reasons attributed is the development of resistance in them to groups of insecticides of organo phosphates, carbamates, synthetic pyrethroids, etc., which form the core of recommendation for thrips management. The chilli thrips, Scirtothrips dorsalis Hood, is no exception and is tending to be an unmanageable pest. In S. dorsalis, besides evidence of resistance, elimination of natural enemies like Orius sp. is evident, which also probably explains the thrips resurgence. Scirtothrips dorsalis is highly polyphagous and of late has become serious on grapes. The damage is manifested as scab on fruit rind, affecting internal and export markets. Fortunately, it does not vector any virus on grapes in India. Farmers have been reporting inefficacy of established chemicals like acephate, dimethoate, monocrotophos, etc. As grapes is an important cash crop of horticulture, management through insecticides, require alternate or new insecticides. So two trials in 2005 on cv. Bangalore Blue following April and October prunings were conducted at the Indian Institute of Horticultural Research (IIHR), Bangalore, S. India to evaluate two doses of a newer molecule viz. Clothianidin [Dantop] on S. dorsalis. Clothianidin 0.006%, Clothianidin 0.008% were compared with monocrotophos 0.05%, dimethoate 0.06% and acephate 0.1125%. There was an untreated check. Each treatment was replicated five times; a vine constituted a replicate. These data were subjected to ANOVA, after arc sine transformation. The critical difference (CD) at p < 0.05 was the test criterion. In the first trial it was found that all the insecticides tried were superior to check and were on par at p < 0.05. However, Clothianidin 0.008% gave the best control with a low mean of 0.26% berry damage/bunch as compared to 4.42% in the unsprayed check. The trend was the same in the second trial also with Clothianidin 0.008% giving the best control with 0.64% berry damage/bunch as compared to 8.49% in the unsprayed check. It was on par with acephate and monocrotophos, but significantly superior to Clothianidin 0.006% and dimethoate.
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Claims 4
Claim · model-written summary
All tested insecticides outperformed the untreated check in the first trial and were statistically comparable.
- Taxon
- grapest0
- Treatment
- all the insecticides triede0
- Interactor
- S. dorsalis
Scirtothrips dorsalise1pest - Outcome
- superiore0
- Direction
- superiore0
- Comparator
- checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the first trial it was found that all the insecticides tried were superior to check and were on par at p < 0.05”
t0“grapes is an important cash crop”
e1“Clothianidin [Dantop] on S. dorsalis.”
Claim · model-written summary
Clothianidin 0.008% yielded 0.26% berry damage per bunch versus 4.42% in the untreated check in the first trial.
- Taxon
- grapest0
- Treatment
- Clothianidin 0.008%e0
- Interactor
- S. dorsalisScirtothrips dorsalise1pest
- Outcome
- berry damage/bunche0
- Direction
- lowe0
- Value
- 0.26%e0
- Qualifier
- 4.42%e0
- Comparator
- unsprayed checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clothianidin 0.008% gave the best control with a low mean of 0.26% berry damage/bunch as compared to 4.42% in the unsprayed check”
t0“grapes is an important cash crop”
e1“Clothianidin [Dantop] on S. dorsalis.”
Claim · model-written summary
Clothianidin 0.008% yielded 0.64% berry damage per bunch versus 8.49% in the untreated check in the second trial.
- Taxon
- grapest0
- Treatment
- Clothianidin 0.008%e0
- Interactor
- S. dorsalisScirtothrips dorsalise1pest
- Outcome
- berry damage/bunche0
- Direction
- beste0
- Value
- 0.64%e0
- Qualifier
- 8.49%e0
- Comparator
- unsprayed checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Clothianidin 0.008% giving the best control with 0.64% berry damage/bunch as compared to 8.49% in the unsprayed check”
t0“grapes is an important cash crop”
e1“Clothianidin [Dantop] on S. dorsalis.”
Claim · model-written summary
Clothianidin 0.008% was comparable to acephate and monocrotophos but superior to Clothianidin 0.006% and dimethoate in the second trial.
- Taxon
- grapest0
- Treatment
- Clothianidin 0.008%e1
- Interactor
- S. dorsalisScirtothrips dorsalise2pest
- Outcome
- superiore0
- Direction
- superiore0
- Comparator
- Clothianidin 0.006% and dimethoatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was on par with acephate and monocrotophos, but significantly superior to Clothianidin 0.006% and dimethoate”
e1“However, Clothianidin 0.008% gave the best control”
e2“Clothianidin [Dantop] on S. dorsalis.”
t0“grapes is an important cash crop”
The same questions in other papers
clothianidin · Scirtothrips dorsalis · VitisResults agree
1 paper in the same direction as this paper
- positive
insecticide · Scirtothrips dorsalis · VitisResults agree
1 paper in the same direction as this paper
- positive
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.