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VOL. 5, ISSUE 2 (2023)
Toxicity of some essential oils on Thrips tabaci (Thysanoptera: Thripidae) and potential phytotoxicity of seeds onion plants Allium cepa
Authors
El-Ashram D, Shaaban Abd-Rabou, Maha S A Haridy
Abstract
Natural oils play an important role in reducing the population density
of insect pests, in addition to several advantages that make them the best
compared to insecticides. As, it is distinguished by its lack of resistance to
insect pests, and the use of oils in integrated control programs reduces
environmental pollution problems and ultimately obtains a healthy food product.
In this study, it includes experimenting with several natural oils, namely
lemon oil, mint oil, and neem oil, and comparing them with mineral oil in terms
of the exterminating ability of thrips that infect onion plants, as well as
knowing the phytotoxicity of these oils on onion seeds. The results showed that
the highest death rate of Thrips tabaci Lindeman (Thysanoptera:
Thripidae) was recorded for lemon oil, as it ranged from 58.68% to 83.0 %at
concentrations from 1 ml to 5 ml /L. of water, while the lowest death rate was
recorded for neem oil, where the death rate ranged from 49.3 %to 61.5% at
concentrations from 1 to 5 ml /L. of water, while the death rates were average
for both peppermint and mineral oil. The LC50 values for the lemon oil were
0.6053 ml/l. We found that lemon oil had the highest effect on the germination
rate, and the germination rate reached 30% compared to the control. Also,
results indicated that the highest phytotoxicity was mineral oil at a
concentration of 20 ml / L., where the toxicity percentage was phytotoxicity
reached 68.0%, while the treatment with peppermint oil was the least in terms
of phytotoxicity.
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Pages:77-82
How to cite this article:
El-Ashram D, Shaaban Abd-Rabou, Maha S A Haridy "Toxicity of some essential oils on <i>Thrips tabaci</i> (Thysanoptera: Thripidae) and potential phytotoxicity of seeds onion plants <i>Allium cepa</i>". International Journal of Agriculture and Plant Science, Vol 5, Issue 2, 2023, Pages 77-82
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