Abstract
This laboratory study encompasses comparative evaluation of insecticidal potential of indigenous ethnomedicinal flora of Soone Valley and surrounding Salt Range of Pakistan. Acetone extracts (10%) of forty plant species were evaluated against Asian citrus psyllid (Diaphorina citri), armyworm (Spodoptera litura), house mosquito (Culex quinquefasciatus) and subterranean termite (Odontotermes obesus) using twig-dip, leaf-dip, aqueous exposure and filter paper-dip bioassay methods, respectively. Results revealed that the extracts of Mentha longifolia, Sonchus asper and Nerium indicum were the most toxic to D. citri exhibiting 90% mortality. The extracts of Dodonaea viscosa and Olea ferruginea caused highest mortality of S. litura (i.e. 70 and
58%, respectively). Maximum mortality of C. quinquefasciatus larvae was observed by Maerua arenaria (87%), N. indicum (84%) and Withania coagulans (83%) extracts. While, the most toxic plant extracts against O. obesus termites were Periploca aphylla, Rhamnus spp. and Buxus papillosa causing 89, 62 and 52% mortality, respectively. These findings corroborate the effectiveness of indigenous plant extracts as safe and environment friendly alternates to hazardous synthetic
insecticides and suggest the incorporation of these natural compounds in the pest management programs against agricultural and urban insect pests.
Muhammad Zeeshan Majeed, Muhammad Afzal, Muhammad Asam Riaz, Kanwer Shahzad Ahmed, Muhammad Luqman, Mehar Zubair Shehzad, Muhammad Bilal Tayyab, Mujahid Tanvir, Saadia Wahid. (2020) Comparative Toxicity of Phyto-Extracts of Indigenous Flora of Soone Valley against some Insect Pests of Agricultural and Urban Importance, Punjab University Journal of Zoology, Volume 35, Issue 2.
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