Phytotoxic, DPPH scavenging, insecticidal activities and essential oil composition of Achillea vermicularis, A. teretifolia and proposed chemotypes of A. biebersteinii (Asteraceae)

- Chemotypes of A. biebersteinii are proposed. Two proposed chemotypes presented different insecticidal activity.
- Main compounds of the proposed chemotypes were 1,8-cineole/piperitone/camphor and 1,8-cineole/camphor/α-thujone.
- Essential oil composition of A. vermicularis from Turkey was investigated for the first time (1,8-cineole/camphor).
- 1,8-cineole/piperitone/camphor chemotype of A. biebersteinii shown significant contact toxicity against S. granarius ((100.00%) at 0.2 μL/mL).