Nukmal, N., Rosa, E., Apriliyani, _, & Kanedi, M. 2017 Insecticidal Effects of the Flavonoid-rich Fraction of Leaves Extract of Gamal (Gliricidia sepium) on the Coffee Mealybugs (Planococcus citri Risso.). Annual Research & Review in Biology 16(6): 1-9

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Notes: Thin layer chromatography analysis of aqueous and methanolic extracts yielded consecutively one and seven fractions of flavonoid. Both type of extract affected mortality rate of the insects in a concentration-related manner, however based on LC50 and LT50 values the water fractions showed a higher effectiveness than that of methanol. It is suggested that flavonoid-rich fraction of gamal leaf extracts is potent to be used as bioinsecticide for coffee mealybugs, Planococcus citri Risso.