Canadian Forest Service Publications
Effects of neem seed extract on the growth of fungal associates of the mountain pine beetle. 1996. Nevill, R.J.; Safranyik, L. Journal of the Entomological Society of British Columbia 93: 129-130.
Issued by: Pacific Forestry Centre
Catalog ID: 4724
We investigated the fungicidal activity of neem seed extract, active ingredient azadirachtin, to Ophiostoma clavigerum (Robins. Jeff. & Davids) and Ophiostoma ips (Rumb.), the fungal associates of the mountain pine beetle, Dendroctonus ponderosae Hopk. When added to malt extract agar, concentrations of 100 ppm significantly reduced the growth of both fungal associates and concentrations above 250 ppm killed both fungi.