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s : One of the family members of Meliaceae that now widely studied in its insecticidal activity is Aglaia genus. Some research results showed that the extracts of the plants A. argantea, A. odorata, A. elliptica, and A. odorattisima can deter the development and growth of insect. Crocidolomia pavonana is major pest of cabbage and inflict severe damage on cabbage plants. Instar 3 larval stage is the active stage of the meal. The part of cabbage that was destroyed is the growing point, so that the formation of the cabbage crop does not happen. The purpose of this research was to test the bioactivity of the stem bark extract of A. odorata against the deterrent activity of C. pavonana. Plant extracts were obtained by maseration method using methanol. The tested insects were male and adult female C. pavonana. Oviposition Deterrent Index of (IPO) at concentration of extract 0 , 25% was 0.12, on concentration 0.50% was 0.35, on concentration 0.75% was 0.66 and on concentration 1% was 0.95. This means that in every treatment there is a different number of eggs laid. The highest Oviposition Deterrent Index is at a concentration of 1% which is 0.95.

Stem Bark Extract Bioactivity of Odorata Lour Aglaia (Meliaceae) Plant on the Deterrent to Oviposition Activities of crocidolomia pavonana fab