02402naa a2200265 a 450000100080000000500110000800800410001910000190006024501810007926000090026052015080026965300160177765300270179365300260182070000170184670000230186370000210188670000170190770000210192470000230194570000190196870000170198770000190200477301130202311301002020-10-26       2020    bl uuuu     u00u1 u    #d1 aNICULAU, E. S.  aInsecticidal activity of essential oils of Pelargonium graveolens l'Herit and Lippia alba (Mill) N. E. Brown against Spodoptera frugiperda (J. E. Smith).h[electronic resource]  c2020  aLippia alba (Mill) N. E. Brown and Pelargonium graveolens L'Herit are major producers of essential oils (E.O) and have several applications, mainly in the perfumery, cosmetics and pharmaceutical industries. L. alba is an aromatic medicinal plant that occurs in almost all regions of Brazil. Several volatile compounds are present in the E. O of this plant, among which stand out: citral (geranial + neral), linalool, limonene, carvone, camphor and 1,8-cineole. P. graveolens is known as fragrant mallow or geranium and was introduced in India in the early 20th century. Citronellol, geraniol, linalool and citronellate formate are the main components present in oil essential of this species. In this work, insecticidal activity of E. O of Pelargonium graveolens, Lippia alba and compounds geraniol, linalool, 1,8-cineole, limonene, carvone, citral and Azamax?? were evaluated against Spodoptera frugiperda. Topical application assay showed E. O of P. graveolens has acute toxicity against Spodoptera frugiperda larvae (third instar) with LD50 1.13 μg/mg per insect and LD90 2.56 μg/mg per insect. Three E. O of L. alba also exhibited insecticidal activity with LD50 ranging from 1.20 to 1.56 μg/mg per insect and LD90 from 2.60 to 3.75 μg/mg per insect (Table 1). Geraniol, linalool, carvone and citral caused significant mortality of 30, 90, 84 and 64% respectively, compared to negative control. The bioinsecticide, Azamax??, caused lower mortality than the compounds of the E. O.  aLippia alba  aPelargonium graveolens  aSpodoptera frugiperda1 aALVES, P. B.1 aNOQUEIRA, P. C. L.1 aMORAES, V. R. S.1 aMATOS, A. P.1 aFERNANDES, J. B.1 aSILVA, M. F. G. F.1 aCORR??A, A. G.1 aBLANK, A. F.1 aRIBEIRO, L. P.  tIn: REUNI??O ANUAL DA SOCIEDADE BRASILEIRA DE QU??MICA, 43., 2020, Online. Resumos... S??o Paulo: SBQ, 2020.