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Article

Chemical Compositions of Ligusticum chuanxiong Oil and Lemongrass Oil and Their Joint Action against Aphis citricola Van Der Goot (Hemiptera: Aphididae)

by 1, 1, 1, 1,2,* and 1,2
1
Research and Development Center of Biorational Pesticide, Northwest Agriculture & Forestry University, Yangling 712100, Shaanxi, China
2
Shaanxi Research Center of Biopesticide Engineering & Technology, Yangling 712100, Shaanxi, China
*
Author to whom correspondence should be addressed.
Academic Editor: Isabel C. F. R. Ferreira
Molecules 2016, 21(10), 1359; https://doi.org/10.3390/molecules21101359
Received: 6 September 2016 / Revised: 9 October 2016 / Accepted: 10 October 2016 / Published: 12 October 2016
(This article belongs to the Collection Bioactive Compounds)
In order to develop novel botanical insecticides, the joint action of Ligusticum chuanxiong oil (LCO) and lemongrass oil (LO) against Aphis citricola van der Goot was determined systematically indoors and outdoors. The chemical profiles of LCO and LO as determined by gas chromatography–mass spectrometry (GC-MS) analysis revealed that the main compounds from LCO were (Z)-ligustilide (44.58%) and senkyunolide A (26.92%), and that of LO were geranial (42.16%) and neral (32.58%), respectively. The mixture of LCO and LO showed significant synergy against A. citricola, with a common-toxicity coefficient (CTC) value of 221.46 at the optimal ratio of LCO to LO (4:1, w:w). Based on the results of solvents and emulsifiers screening, L. chuanxiong oil·Lemongrass oil 20% emulsifiable concentrate (20% LCO·LO EC) was developed, and its stability was confirmed with tests of cold and thermal storage. Field trials indicated that the insecticidal activity of the diluted 20% LCO·LO EC (1000 fold dilution) was comparable to conventional pesticide (20% imidacloprid EC) on A. citricola seven days after application. Thus, the mixture of LCO and LO has the potential to be further developed as a botanical pesticide. View Full-Text
Keywords: lemongrass oil; Ligusticum chuanxiong oil; Aphis citricola van der Goot; botanical aphicides lemongrass oil; Ligusticum chuanxiong oil; Aphis citricola van der Goot; botanical aphicides
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MDPI and ACS Style

Zhang, C.; Liu, R.; He, J.; Ma, Z.; Zhang, X. Chemical Compositions of Ligusticum chuanxiong Oil and Lemongrass Oil and Their Joint Action against Aphis citricola Van Der Goot (Hemiptera: Aphididae). Molecules 2016, 21, 1359. https://doi.org/10.3390/molecules21101359

AMA Style

Zhang C, Liu R, He J, Ma Z, Zhang X. Chemical Compositions of Ligusticum chuanxiong Oil and Lemongrass Oil and Their Joint Action against Aphis citricola Van Der Goot (Hemiptera: Aphididae). Molecules. 2016; 21(10):1359. https://doi.org/10.3390/molecules21101359

Chicago/Turabian Style

Zhang, Chao, Runqiang Liu, Jun He, Zhiqing Ma, and Xing Zhang. 2016. "Chemical Compositions of Ligusticum chuanxiong Oil and Lemongrass Oil and Their Joint Action against Aphis citricola Van Der Goot (Hemiptera: Aphididae)" Molecules 21, no. 10: 1359. https://doi.org/10.3390/molecules21101359

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