Repellency effects of different plant extracts to cotton mealy bug, Phenococcus solenopsis Tinsley (Hemiptera: Pseudococcidae)
2013
Roonjho, A.R. (Lasbela Univ. of Agriculture, Water and Marine Sciences, Uthal (Pakistan). Dept. of Entomology) | Gillani, W.A. (National Agricultural Research Centre, Islamabad (Pakistan). Inst. of Plant and Environmental Protection) | Rasool, A. (National Agricultural Research Centre, Islamabad (Pakistan). Inst. of Plant and Environmental Protection | Akhtar, N. (National Agricultural Research Centre, Islamabad (Pakistan). Inst. of Plant and Environmental Protection | Mahmood, T. (National Agricultural Research Centre, Islamabad (Pakistan). Inst. of Plant and Environmental Protection | Arsalan, A. (University of Poonch, Rawalakot (Pakistan). Dept. of Entomology) | Afzal, M. (Lasbela Univ. of Agriculture, Water and Marine Sciences, Uthal (Pakistan). Dept. of Entomology) | Khan, I. (Lasbela Univ. of Agriculture, Water and Marine Sciences, Uthal (Pakistan). Dept. of Entomology) | Ranjha, M.A. (Islamia Univ. of Bahawalpur (Pakistan). Dept. of Entomology) | Irfan, M. | Khan, J.
Repelling effects of peach plant Prunus persica L. (Rosales: Rosaceae), Eucalyptus, Eucalyptus globulus L. (Myrtales: Myrtaceae), Ashok, Polyalthia longifolia (Magnoliids: Annonaceae), Milk thistle, Silybum marianum (Asterales: Asteraceae), and Sow thistle, Sonchus oleraceus (Asterales: Asteraceae) extracts each in petroleum ether, acetone and ethanol were evaluated at the concentration of 1000, 500 and 250 ppm against cotton mealy bug (Phenococcus solenopsis) in a free choice bioassay for two weeks. The ethanol extract of Prunus persica was the most effective against cotton mealy bug having highest repellency (72.5%) at 500 ppm dose. The lowest average repellency (26.3 %) was observed in acetone extract of Silybum marianum at 500 ppm dose.
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