Insecticidal and nematicidal essential oils from Argentinean Eupatorium and Baccharis spp.

► Baccharis salicifolia oils had (Z)-β-ocimene, germacrene D, muuroladiene, β-cubebene. ► B. salicifolia oil from location A had α-thujene and α-Phellandrene and isoledene in location B. ► Eupatorium spp. (Eupatorium inulaefolium and Eupatorium viscidum) essential oils strongly affected Myzus persicae. ► B. salicifolia oil (location A) had post-ingestive toxicity to Spodoptera littoralis larvae. ► E. viscidum showed a strong nematicidal effect.