Efficacy of Native, Commercial Bacillus thuringiensis and Fungal Formulations Against Okra Shoot and Fruit Borer
DOI:
https://doi.org/10.55446/IJE.2023.943Keywords:
Earias vittella, okra, chlorantraniliprole, Metarhizium anisopliae, Beauveria bassiana, Bacillus thuringiensis, management, cumulative efficacy.Abstract
Okra shoot and fruit borer commonly known as spotted bollworm is a major pest of the economically important crops, viz., cotton and okra. Field experiment was conducted with 13 treatments including seven native Bt isolate treatments viz., 49, 51, 52, 55, 16, HD1 and 493 along with commercial Bt treatment (Dipel), three Entomopathogenic fungal treatments viz., Metarhizium anisopliae, Beauveria bassiana, Metarhizium rileyi, one chemical check viz., chlorantraniliprole and untreated control. The cumulative efficacy of treatments tested for the management E. vitella on okra during kharif 2021-2022 revealed that all the treatments were found effective over untreated control (20.08%). Among the treatments, Chlorantraniliprole 18.5% SC @ 0.27 ml l-1 was found superior with lowest mean fruit infestation (8.05%) and it was on par with M. rileyi (1x108 CFU g-1) @ 5 g l-1 (9.70%), isolate 493 (1x1010 CFU g-1) @ 3 g l-1 (9.17%), M. anisopliae (1x108 CFU g-1) @ 5 g l-1 (9.90%) and isolate 16 (1x1010 CFU g-1) @ 3 g l-1 (9.87%).
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Angela P, Francisco R, Gregorio A, Jose C, Juan B. 2017. ADEL-R (Analysis and design of experiments with R for Windows) Version 2.0, International Maize and Wheat Improvement Center.
Bansode A G, Patil C S, Jadhav S S. 2015. Efficacy of insecticides against shoot and fruit borer, E. vittella infesting okra. Pest Management in Horticultural Ecosystems 21(1): 106-109.
Biswas S, Das K, Ghosh S K. 2009. Field efficacy of different insecticides and neem against Earias vittella (Fab.) on okra. Journal of Entomological Research 33(4): 331-333.
Gurve P, Singh B, Singh B K, Murthy B S R. 2016. Screening and evaluation of certain bio-pesticides against Earias vittella (Fabricius) on okra (Abelmoschus esculentus (L.) Moench). Doctoral thesis. Gujarat agricultural university, Anand, India.
Hilder V A, Boulter D. 1999. Genetic engineering of crop plants for insect resistance a critical review. Crop Protection. 18: 177-191.
Hosamani A C, Chowdary L, Bheemanna R M, Hanchinal S. 2011. Field bioefficacy of Rynaxypyr 20 Sc against fruit borer complex in okra. Annals of Plant Protection Sciences 19(2): 463-464.
Jat K L, Pareek B L. 2003. Biophysical and bio-chemical factors of resistance in brinjal against, Leucinodes orbonalis. Indian Journal of Entomology 65(2): 252-258.
Malik K, Jabeen F, Talpur M M A, Andleeb S, Farooq A. 2013. Pesticidal activity of Pakistani Bacillus thuringiensis isolates against Helicoverpa armigera (Hubner) and Earias vittella (Lepidoptera: Noctuidae). IOSR Journal of Pharmacy and Biological Sciences 4(6): 9-12.
Memon A J, Abro G H, Syed T S. 2004. Varietal resistance of okra against Earias spp. Journal of Entomology 1(1): 1-5.
Misra H P, Dash D D, Mahapatro D. 2002. Efficacy of some insecticide against ‘okra’ fruit borer and leaf roller. Annals of plant protection sciences 10: 51-54.
Suman, C L, Wahi S D, Mohan N J. 1984. Distribution pattern of okra shoot and fruit borer (E. vittella Fab.) under natural conditions. Indian Journal of Entomology. 45: 362-364.
Venkanna R, Balikai R A, Patil R H. 2015. Management of Okra fruit borers using insecticide molecules. Annals of Plant Protection Sciences 23(1): 158-199.