Environmental Entomology (1992) 21, 837-844

J. Hough-Goldstein and S.P. Hahn (1992)
Antifeedant and oviposition deterrent activity of an aqueous extract of Tanacetum vulgare L. on two cabbage pests
Environmental Entomology 21 (4), 837-844
Abstract: In laboratory choice and. no-choice tests, an aqueous extract of tansy, Tanacetum vulgare L. (Compositae), reduced feeding on cabbage leaf disks by imported cabbageworms, Artogeia (=Pieris) rapae (L.). Imported cabbageworms reared on cabbage leaves treated with tansy extract took longer to develop to pupation, and pupae weighed less than insects reared on control leaves. In oviposition choice tests, imported cabbageworms laid three times as many eggs on control (water-sprayed) cabbage plants as on tansy-treated plants. Diamondback moths, Plutella xylostella (L.), laid more than twice as many eggs on control as on tansy-treated plants. In both spring and fall cabbage field trials, 1 and 5% tansy treatments reduced insect numbers significantly on at least some dates. Insect damage ratings at harvest were significantly lower for tansy-treated plants than for plants treated with either water or water plus surfactant, although higher than damage ratings for Bacillus thuringiensis-treated plants. The surfactant used with the tansy treatments, 1% (vol/vol) Triton B-1956 (now Latron B-1956), reduced cabbage head weights substantially in water plus surfactant control treatments compared with the water-only treatment.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)

Research topic(s) for pests/diseases/weeds:
control - general

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plutella xylostella	Cabbage (Brassica oleracea)	U.S.A. (NE)
	Pieris rapae	Cabbage (Brassica oleracea)	U.S.A. (NE)