Abstract
Pomacea canaliculata is dangerous pest to paddy field due to fast action on eating stem and young leaves of paddy. Synthetic pesticides are common method used by farmers to control P. canaliculata infestation. However, the usage of synthetic pesticides gave negative impact to natural environment, aquatic and non-target organisms. Thus, botanical pesticides are alternative methods to control P. canaliculata. The aims of this research are to quantify chemical compound in Peltophorum pterocarpum and Ipomoea aquatica extracts and evaluate antifeedant activity of extracts for controlling P. canaliculata. Ultraviolet-Visible (UV-Vis) spetrophotometer analysis was done to quantify chemical compound in P. pterocarpum and I. aquatica extracts. The result showed all treatments gave the highest amount of lupeol compared with catechin, rutin, salicylic acid, quercetin and kaempferol. Peltophorum pterocarpum extracts in methanol showed highest antifeedant index (AFI) (46.9%) compared with other treatments. Thus, it showed P. pterocarpum extracts in methanol have more abilities to act as an antifeedant. In summary, P. pterocarpum is recommended as an alternative botanical pesticide due to its antifeedant properties on P. canaliculata.
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