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Evaluation of Synthetic Insecticides and Essential Oils for the Management of Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae)

Evaluation of Synthetic Insecticides and Essential Oils for the Management of Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae)

Muhammad Arshad1, Muhammad Irfan Ullah1,*, Muhammad Afzal1, Yasir Iftikhar2, Samina Khalid3, Zahoor Hussain4, Jaime Molina-Ochoa5,6 and John E. Foster6

 1Department of Entomology, University of Sargodha, Sargodha, Pakistan

2Department of Plant Pathology, University of Sargodha, Sargodha, Pakistan
3Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari, Pakistan
4Department of Horticulture, University of Sargodha, Sargodha, Pakistan
5Universidad de Colima-Coordinación General de Investigación Científica-Centro Universitario de Investigación y Desarrollo Agropecuario, Km. 40 autopista Colima-Manzanillo, Tecomán, Colima 28930, México
6Department of Entomology, University of Nebraska, Lincoln, USA

*      Corresponding author: mirfanullah@uos.edu.pk

 

ABSTRACT

 Citrus leafminer (CLM), Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae) is a destructive insect pest of citrus nurseries as well as orchards in Pakistan. The aim of this study was to assess the effectiveness of some synthetic insecticides and essential oils against citrus leafminer larvae. Two laboratory bioassays, leaf dip bioassay (LDB) and topical bioassay (TB) were developed to check the efficacy of tested chemicals and essential oils. As seen from results, abamectin showed significant mortality (63.5%) of CLM larvae when topical bioassay was performed. Similarly, the percent mortality of CLM larvae was 53.8% after application of abamectin, when leaf dip bioassay technique was used. However, among tested botanicals, Azadirachta indica oil showed better results with percent CLM mortality of 35.6%, through topical bioassay and 31.8% through leaf dip bioassay. In the case of A. indica, the LC50 value was also observed lower (1.88±0.37, 1.73±0.29) in LDB and TB, respectively, as compared to other botanicals. So, our study suggested that abamectin gave better management of citrus leafminer larvae. However, higher concentrations of A. indica oil can be used to control CLM larvae.

 

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Pakistan Journal of Zoology

August

Vol. 51, Iss. 4, Pages 1203-1598

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