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Toxicity of plant volatile oils against Callosobruchus maculatus Sushmita TH*, Gupta M. K., Kumar Chetan, Karthik S. Department of Entomology, College of Agriculture *Email: pipithockchom@gmail.com
Online published on 23 July, 2019. Abstract Five plant volatile oils were evaluated against adults of Callosobruchus maculatus with fumigation and contact toxicity methods. Patchouli oil gave the lowest LC50 value and thus the most toxic one, followed by cinnamon oil. The descending order of contact toxicity in LC50 values was: patchouli oil (0.033%) > cinnamon oil (0.082%) > ginger oil (0.122%) > garlic oil (0.217%) > lemon oil (0.334%). The order of relative toxicity was as: patchouli oil (10.12) > cinnamon oil (4.07) > garlic oil (1.53) > ginger oil (1.26) > lemon oil (1.00) as revealed by the contact toxicity. As regards fumigant toxicity the order with LC50 values was: cinnamon oil (0.060%) > ginger oil (0.243%) > lemon oil (1.442%) > patchouli oil (8.358%) > garlic oil (187.416%). In terms of relative toxicity it was: cinnamon oil (3123.6) > ginger oil (771.25) > lemon oil (129.96) > patchouli oil (22.42) > garlic oil (1.00) with fumigation method. Top Keywords Callosobruchus maculatus, plant volatile oils, cinnamon, patchouli, ginger, garlic, lemon, relative toxicity, fumigation. Top | |
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