Jacobson, M., Reed, D.K., Crystal, M.M., Moreno, D.S., & Soderstrom, E.L. 1978 Chemistry and biological activity of insect feeding deterrents from certain weed and crop plants.. Entomologia Experimentalis et Applicata 24: 448-457.

Notes: [Conference title: Proceedings of the 4th International Symposium - Insect and Host Plant, Chapman, R.F. & Bernays, E.A. (Eds.) - held at Fulmer Grange, Slough, England, 4-9 June 1978.] Concentrations of 0.01-1.0% of a hexane extract of the seed of neem (Azadirachta indica) and several of its chromatographic fractions significantly deterred feeding by Aonidiella aurantii (Mask.), A. citrina (Coq.), Planococcus citri (Risso), Panonychus citri (McG.) and Aleurothrixus floccosus (Mask.).