A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is
Journal of Crop Protection
Essential oils (EOs) extracted from aerial parts of Aster indamellus Grierson, Calamintha umbrosa Benth. and Erigeron annuus (L.) Pres. were analyzed by GC, GC/MS. The major acetylenic constituent (cis-lachnophyllum ester) of E. annuus was isolated and characterized by 1 H and 13 C-NMR spectra. Their toxicity and repellent effect against Lipaphis erysimi was tested. Oils of E. annuus and C. umbrosa exhibited higher toxicity on direct spray and by fumigation. LC 50 value of E. annuus oil wasfatcat:rmzhs6xvcvadzfbollbv5mozay