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International Conference on

Recent Trends in Environmental Sustainability

ESCON22/NMsB/21
Insecticidal activity of chitosan and kaolin and their synergistic effect with
entomopathogenic fungi and nanoparticles against cabbage aphid (Brevicoryne
brassicae L.)

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Ilyas Afridi, Sajjad Ali , M. Anjum Aqueel, Asif Sajjad, Irfan Akram, Muhammad Yasin,
Saqib Ajmal
Department of Entomology, The Islamia University of Bahawalpur, 63100, Bahawalpur,
Pakistan
Correspondence: sajjad.ali@iub.edu.pk
Abstract

Brassica crops are cultivated all over the world. The cabbage aphid, (Brevicoryne brassicae
L.), causes serious damage to these crops all over the globe. Aphid damage to this crop can
result in yields losses up to 50 percent. The injudicious use of pesticides, to manage this issue,
has caused negative environmental effects, disparities in the ecological system, risks to human
health, and harmful effects on non-target organisms. A number of unique strategies for pest
control in agriculture sector to minimize the pest infestation on food sources are required.
Current study evaluated the insecticidal activity of chitosan and kaolin and their synergistic
effect with entomopathogenic fungi (EPF) and nanoparticles against cabbage aphid. Chitosan
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nanoparticles (0.5%) + M. anisopliae (10 ) showed the highest mortality against B. brassicae
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(90%) while lowest mortality (20%) was observed in chitosan (0.5%) + B. bassiana (10 ). The
highest fecundity rate 6.66±2.02 and 6.66±1.20 were recorded in chitosan (0.5%) + M.
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anisopliae (10 ) and chitosan (0.5%) + B. bassiana (10 ) respectively. Whereas, the lowest
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fecundity rate 0.66±0.66 was recorded in Chitosan nanoparticles (1%) + M. anisopliae (10 )
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and Chitosan nanoparticles (1%) + B. bassiana (10 ). So, the use of chitosan, kaolin and their
nanoparticles with EPF could be potential insecticides against soft bodied insect pests and it
may be a good alternative of commercial pesticides.
Keywords: Cabbage aphid; EPF; Nanoparticles; Brassica; Chitosan; Kaolin

Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus

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