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Compatibility of entomopathogenic fungi and botanicals against sucking pests of okra: an eco-friendly approach

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Title Compatibility of entomopathogenic fungi and botanicals against sucking pests of okra: an eco-friendly approach
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Creator Halder J, Divekar PA and Rani AT
 
Subject Entomopathogenic fungi, Neem oil, Okra, Jassids, Whitefly, Predators, Efficiency
 
Description Not Available
Background: Okra, Abelmoschus esculentus (Linn.) Moench, is one of the most important traditional vegetables in
India. The crop is attacked severely by sucking pests, viz., jassid, Amrasca biguttula biguttula Ishida, and whitefly,
Bemisia tabaci Genn., throughout its growth period. To control these sucking pests, different entomopathogenic
fungi (EPF), viz., Beauveria bassiana, Metarhizium anisopliae, and Lecanicillium lecanii were tested alone and their 1:1
combinations with neem oil against these sucking pests and compared to Imidacloprid 17.8% SL as chemical
control under field conditions during 2018 and 2019.
Results: Among the EPF tested, the lowest jassid (1.16, 1.27 leaf-1) and whitefly (1.33, 0.84 leaf-1) population was recorded in
plots treated with L. lecanii during the two consecutive years. Combination of L. lecanii and neem oil at half of their
recommended concentrations had the lowest jassid and whitefly population among all the treatments and maximum
reduction over control and at par with chemical control, i.e., Imidacloprid 17.8 SL at 0.33 ml l−1
. Moreover, all these
biopesticides were found relatively safe to the polyphagous predators (Micraspis discolor, Menochilus sexmaculatus, and
spiders) and at par with untreated control. In contrast, Imidacloprid 17.8 SL was the most toxic among all the treatments
with the lowest numbers of spiders and ladybird beetles.
Conclusion: Combination of the EPF like B. bassiana, M. anisopliae, and L. lecanii with neem oil at half of their recommended
concentrations could be a viable ecofriendly option in the management of the sucking pests of okra, along with the
conservation of natural enemies.
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Date 2022-11-10T05:52:51Z
2022-11-10T05:52:51Z
2021-02-20
 
Type Research Paper
 
Identifier Halder, J., Divekar, P.A. & Rani, A.T. Compatibility of entomopathogenic fungi and botanicals against sucking pests of okra: an ecofriendly approach. Egypt J Biol Pest Control 31, 30 (2021). https://doi.org/10.1186/s41938-021-00378-6
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http://krishi.icar.gov.in/jspui/handle/123456789/74988
 
Language English
 
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Publisher Not Available