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Aphicidal Efficacy of Emulsified Soybean Oil Against Aphis gossypii Glover (Homoptera: Aphididae)
The mortalities of Aphis gossypii treated with various concentrations of soybean oil
The mortalities of Aphis gossypii treated with various concentrations of soybean oil

Author:Jih-Zu Yu

Abstract:

    A study on the mortality of cotton aphid (Aphis gossypii Glover) treated with soybean oil and its emulsifier was conducted in laboratory under 25℃ ± 1℃.  Results revealed that the aphicidal efficacy of soybean oil emulsion was available.  The LC50 and LC90 of soybean oil were 1.09–1.28 and 3.96–5.78 mL/L, respectively.  The emulsifier was also effective against cotton aphid.  The emulsifier and soybean oil in the ratio of 0.25 to 1 had no significant difference from 2:1, and there was no difference among Sigma-Aldrich R&D grade and 3 market products of soybean oil comparing their aphicidal efficacy.  However, the edible soybean oil emulsified with Tween 80 and Span 80 is potentially preventable for A. gossypii control.

Key words:Aphis gossypii, Soybean oil, Emulsifier

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Journal of
Taiwan Agricultural Research
Vol. 72, No.3 (2023) ISSN: 2790-086X Vol. 72, No.3 (2023)
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