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Sadawarte, A. K.
- Bioefficacy of New Chemistry Molecules against Sucking Pests of Bt Transgenic Cotton
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Authors
Affiliations
1 Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, AKOLA (M.S.), IN
1 Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, AKOLA (M.S.), IN
Source
International Journal of Plant Protection, Vol 8, No 1 (2015), Pagination: 7-12Abstract
Studies were conducted to evaluate some new chemistry insecticide molecules as foliar application for their bioefficacy against major sucking pests and toxicity against predators of Bt transgenic cotton at Department of Entomology, Dr. Panjabrao Deshmukh Krishi Vidyapeth, Akola during 2013-2014 with eight treatment and three replications. After third spray the application of flonicamid 50 WG@ 0.02 per cent, dinotefuran 20 SG @ 0.008 per cent and imidacloprid 30.5 SC @ 0.005 per cent proved effective in recording minimum aphid population i.e. 1.27, 1.37 and 1.92 aphids per leaf, respectively. The treatment with dinotefuran 20 SG @ 0.008 per cent and 0.006 per cent, fipronil 5 SC @ 0.015 per cent, acetamiprid 20 SP @ 0.004 per cent and flonicamid 50 WG @ 0.02 per cent successfully checked the incidence of leafhopper with in the range of 0.63 to 0.93 leafhoppers/leaf at third spray. The application of fipronil 5 SC @ 0.015 per cent, flonicamid 50 WG @ 0.02 per cent, imidacloprid 30.5 SC @ 0.005 per cent, dinotefuran 20 SG @ 0.008 per cent and acetamiprid 20 SP @ 0.004 per cent effectively minimized the incidence of thrips population with in the range of 2.59 to 3.60 thrips per leaf at the end of third spray. Whereas, acetamiprid 20 SP @ 0.004 per cent proved effective in lowering down the whitefly population (0.99 whiteflies/leaf), which was closely followed by flonicamid 50 WG @ 0.02 per cent (1.10 whiteflies/leaf), fipronil 5SC @ 0.015 per cent (1.11 whiteflies/leaf), dinotefuran 20 SG @ 0.008 per cent (1.20 whiteflies/leaf), and imidacloprid 30.5 SC @ 0.005 per cent (1.34 whiteflies/leaf). However, during the present studies no deleterious effect of insecticidal treatments were observed on population of natural enemies. The highest seed cotton yield was recorded in the plot sprayed with fipronil0.015 per cent, which was closely followed by dinotefuran 0.008 per cent, flonicamid 0.02 per cent, imidacloprid 0.005 per cent, acetamiprid 0.004 per cent and dinotefuran 0.006 per cent. On the basis of economics, imidacloprid 0.005 per cent proved to be the most economically viable treatment followed by acetamiprid 0.004 per cent, fipronil 0.015 per cent, dinotefuran 0.006 per cent and flonicamid 0.02 per cent. The present findings indicates that these insecticides can be suitably incorporated in an integrated management programme of sucking pests of cotton.Keywords
Cotton, Pests, Dinotefuran, Flonicamid, Yield, ICBR.
- Laboratory evaluation of Aschersonia aleyrodis (Webber) against citrus blackfly, Aleurocanthus woglumi (Ashby) and whitefly, Dialeurodes citri (Ashmead)
Abstract Views :129 |
PDF Views:84
Authors
Affiliations
1 Department of Agricultural Entomology, Post Graduate Institute, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola – 444104, Maharashtra, India., IN
2 Department of Agricultural Entomology, Post Graduate Institute, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola – 444104, Maharashtra, India ., IN
3 AICRP on Fruits, Dr Panjabrao Deshmukh Krishi Vidyapeeth Akola – 444104, Maharashtra, India., IN
1 Department of Agricultural Entomology, Post Graduate Institute, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola – 444104, Maharashtra, India., IN
2 Department of Agricultural Entomology, Post Graduate Institute, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola – 444104, Maharashtra, India ., IN
3 AICRP on Fruits, Dr Panjabrao Deshmukh Krishi Vidyapeeth Akola – 444104, Maharashtra, India., IN
Source
Journal of Biological Control, Vol 36, No 2 & 3 (2022), Pagination: 130 - 135Abstract
Red whitefly fungus, Aschersonia aleyrodis (Webber) is a fungal pathogen of nymphs of blackfly, Aleurocanthus woglumi (Ashby) and whitefly, Dialeurodes citri (Ashmead) on the citrus plant. It is used as a promising biological control agent. In the present study, attempts have been made to check the efficacy of A. aleyrodis biopesticides for the management of citrus blackfly and whitefly under laboratory condition. Probit analysis for LC50 values of 2nd instar nymph was calculated 1.1 x 108 spore/ml and 1.8 x 107 spore/ml and LT50 values, 8.14 to 13.77 days and 6.88 to 9.72 days were derived for 2nd instar nymph of citrus blackfly and whitefly at respective concentration. Cross infectivity was found non-pathogenic to citrus aphids and mealybugs. Among the insecticides, Dimethoate 30 % EC was observed compatible with A. aleyrodis as it shows less inhibition at the half and recommended dose of insecticide.Keywords
Aschersonia aleyrodis, Aleurocanthus woglumi, biological control, entomopathogenic fungusFull Text
References
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