Abstract
93 The Journal of Plant Protection Sciences, 1(1) : 92-95, 2009 Ca = number of insects in untreated check after insecticide application. Cb = number of insects in untreated check before insecticide application. The percent reductions were transformed to angular values from which analysis of variance was calculated for determining critical difference (CD) at 5 percent level of significance. The green chilli yield and number of chilli per plant was recorded treatment wise at each picking and two years data were pooled and subjected to statistical analysis. These data were also used to work out the economics of different insecticidal treatment by taking into consideration application cost (labour charges and cost of insecticides) and the market price of marketable additional green chilli obtained in different treatments. Results and Discussion It is evident from Table 1 that acetamiprid and thiamethoxam and those followed by neem pesticide and BT were most effective against thrips as there was a higher percent reduction in the population of thrips (78.9 to 93.3%). Neem pesticide (ultineem) and Bt and there combination were moderately effective against thrips (43.4 to 51.4%). In control plot thrips population were increased 45.96% on third day and 62.5% on tenth day. After final observation the mean of four sprayings were recorded. The population reduction was recorded with acetamiprid ranked first followed by the thiamethoxam. All the chemicals significantly reduced thrips population over control. Different type of sucking pests such as thrips, jassids, white flies and aphids are highly susceptible to this group of chloronicotinyl insecticide. Vastrad5 reported that thiamethoxam is very effective against aphids, white fly and green bug. Jayewar et al.2 conducted an experiment to record the bio-efficacy of acetamipride against sucking pests of chilli. Other chemicals such as neem pesticides followed by microbial pesticides (Bt) were highly effective against the thrips whereas plant product alternative with microbial pesticides were safer4. The highest yield of green chilli fruit (40.5 q.ha-1), higher cost benefit ratio of 1 : 16.97 alongwith highest reduction of thrips was recorded with acetamiprid followed by thiamethoxam (33.1 q.ha-1) (Table 2). It was comparable to that of accetamiprid and thiamethoxam followed either by neem pesticide or microbial pesticide. The descending order of effectiveness of various treatment in managing chilli thrips in present studies was four sprays of accetamiprid > four sprays of thiamethoxam > two sprays of acetameprid + two sprays of neem pesticide > two sprays of thiamethoxam + two sprays of neem pesticide > two sprays of acetamiprid + two sprays of Bt > two sprays of thiamethoxam + two sprays of Bt > four pesticide of neem pesticide > two sprays of neem + two sprays of Bt > four sprays of Bt. Literature Cited Henderson CF Tilton EW. 1955 Tests with the acaricides against the brown wheat mite. Journal of Economic Entomology 48 : 157 – 61. Jayewar NE Mundhe DR Wadnerkar DW Zanwar PR Narwade BP. 2003 Evaluation of acetamiprid 20 SP against sucking pests of chilli. Pestology 27 : 17-20. ^%Patel VN Gupta HCL. 1998 Estimation of losses and management of thrips infesting chillies In : National Seminar on “Entomology in 21st Century” Biodiversity, Sustainability, Environmental safety and Human Health held at Udaipur,India, 99 pp. Rai AB Solanki VY. 2002 Chilli leaf curl suppression through the integration of chemical, botanical and microbial control of sucking pests. Indian Journal of Hill Farming 15 : 26-34. Vastrad AS. 2003 Neonicotinoids : current success and future outlook. Pestology 27 : 60-63. 94 The Journal of Plant Protection Sciences, 1(1) : 92-95, 2009 Tr ea tm en ts D os e Av . N o. o f t hr ip s % re du ct io n/ in cr ea se (+ ) o f t hr ip s Po ol ed m ea n % o f % re du ct io n N o. o f f ru its Y ie ld be fo re sp ra yi ng /le af a ft er sp ra y at v ar io us in te rv al re du ct io n/ in cr ea se (+ ) ov er co nt ro l pe r p la nt (q /h a)
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Claims 10
Claim · model-written summary
Acetamiprid and thiamethoxam were most effective against thrips, reducing populations by 78.9 to 93.3%.
- Taxon
- chillit0
- Treatment
- acetamiprid and thiamethoxame0
- Interactor
- Scirtothrips dorsalis Hood
Scirtothrips dorsalist0pest - Outcome
- population of thripse0
- Direction
- reductione0
- Value
- 78.9 to 93.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“acetamiprid and thiamethoxam and those followed by neem pesticide and BT were most effective against thrips as there was a higher percent reduction in the population of thrips (78.9 to 93.3%)”
t0“thrips, Scirtothrips dorsalis Hood infesting chilli”
Claim · model-written summary
Neem pesticide and Bt were moderately effective against thrips, reducing populations by 43.4 to 51.4%.
- Taxon
- chillit0
- Treatment
- Neem pesticide (ultineem) and Bt and there combinatione0
- Interactor
- Scirtothrips dorsalis HoodScirtothrips dorsalist0pest
- Outcome
- thripse0
- Direction
- effectivee0
- Value
- 43.4 to 51.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neem pesticide (ultineem) and Bt and there combination were moderately effective against thrips (43.4 to 51.4%)”
t0“thrips, Scirtothrips dorsalis Hood infesting chilli”
Claim · model-written summary
Thrips populations increased by 45.96% on the third day in control plots.
- Taxon
- chillit0
- Interactor
- Scirtothrips dorsalis HoodScirtothrips dorsalist0pest
- Outcome
- thrips populatione0
- Direction
- increasede0
- Value
- 45.96%e0
- Qualifier
- third daye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In control plot thrips population were increased 45.96% on third day”
t0“thrips, Scirtothrips dorsalis Hood infesting chilli”
Claim · model-written summary
Thrips populations increased by 62.5% on the tenth day in control plots.
- Taxon
- chillit0
- Interactor
- Scirtothrips dorsalis HoodScirtothrips dorsalist0pest
- Outcome
- thrips populatione0
- Direction
- increasede0
- Value
- 62.5%e0
- Qualifier
- tenth daye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In control plot thrips population were increased 45.96% on third day and 62.5% on tenth day”
t0“thrips, Scirtothrips dorsalis Hood infesting chilli”
Claim · model-written summary
Acetamiprid ranked first for thrips population reduction, followed by thiamethoxam.
- Taxon
- chillit0
- Treatment
- acetamipride0
- Interactor
- Scirtothrips dorsalis HoodScirtothrips dorsalist0pest
- Outcome
- population reductione0
- Direction
- ranked firste0
- Comparator
- thiamethoxame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The population reduction was recorded with acetamiprid ranked first followed by the thiamethoxam”
t0“thrips, Scirtothrips dorsalis Hood infesting chilli”
Claim · model-written summary
All chemicals significantly reduced thrips populations relative to control.
- Taxon
- chillit0
- Treatment
- All the chemicalse0
- Interactor
- Scirtothrips dorsalis HoodScirtothrips dorsalist0pest
- Outcome
- thrips populatione0
- Direction
- reducede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the chemicals significantly reduced thrips population over control”
t0“thrips, Scirtothrips dorsalis Hood infesting chilli”
Claim · model-written summary
Acetamiprid produced the highest green chilli fruit yield, 40.5 q.ha-1.
Verbatim
e0“The highest yield of green chilli fruit (40.5 q.ha-1), higher cost benefit ratio of 1 : 16.97 alongwith highest reduction of thrips was recorded with acetamiprid followed by thiamethoxam (33.1 q.ha-1)”
Claim · model-written summary
Thiamethoxam produced green chilli fruit yield of 33.1 q.ha-1.
Verbatim
e0“The highest yield of green chilli fruit (40.5 q.ha-1), higher cost benefit ratio of 1 : 16.97 alongwith highest reduction of thrips was recorded with acetamiprid followed by thiamethoxam (33.1 q.ha-1)”
Claim · model-written summary
Acetamiprid had a cost benefit ratio of 1 : 16.97.
Verbatim
e0“The highest yield of green chilli fruit (40.5 q.ha-1), higher cost benefit ratio of 1 : 16.97 alongwith highest reduction of thrips was recorded with acetamiprid”
Claim · model-written summary
Four sprays of acetamiprid ranked highest for managing chilli thrips.
- Taxon
- chillie0
- Treatment
- four sprays of accetamipride0
- Outcome
- effectivenesse0
- Direction
- descending ordere0
- Comparator
- four sprays of thiamethoxame0
ThripsOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The descending order of effectiveness of various treatment in managing chilli thrips in present studies was four sprays of accetamiprid > four sprays of thiamethoxam”
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application · Thrips · Capsicum (peppers)Results agree
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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.