Efficacies of physical barriers for preventing blue-stain of Japanese red pine logs

IRG/WP 07-20359

H Taniuchi, T Koiwa, H Masuya, S Doi

This paper deals with field trials on physical barriers to prevent blue stain on Japanese red pine logs using a fly screen, bark and leaves of Japanese cedar as covering materials. These barriers arrested blue stain and bark beetle attacks to low levels than control for 1 month except covering with a small amount of bark. Covering with the fly screen and a large amount of bark permissibly suppressed blue stain for more than 1 month. The fly screen will be enough for practical use to prevent blue stain of pine logs.

Keywords: blue-stain, Japanese red pine, bark beetle, physical barrier

Conference: 07-05-20/24 Jackson, USA

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