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Filtering by: Creator Tunnock, Scott Subject Report (United States. Forest Service. Northern Region. Forest Pest Management)

Mountain pine beetle infestations in the northern region during 1985

Creator:

Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry

Resource Type:

Technical Report
Suppression of cranberry girdler damage in beds of Douglas-fir seedlings, Coeur d'Alene Nursery, Idaho Panhandle National Forest, 1984

Creator:

Tunnock, Scott and United States. Forest Service. Northern Region

Abstract:

The cranberry girdler, Chrysoteuchia toparia Zeller, has caused increasing damage to tree seedlings in the Coeur d'Alene Nursery since 1980. Heaviest feeding has occurred on the tap roots of 2+0 Douglas-fir stock. By 1983, 8.2 percent of the seedlings examined in seedbeds were injured by this moth. A spray program...

Resource Type:

Technical Report
Evaluation of a hemlock sawfly outbreak in the northern tip of Idaho, 1985

Creator:

Tunnock, Scott and United States. Forest Service. Northern Region

Abstract:

A rare outbreak of hemlock sawfly, Neodiprion tsugae Middleton, was detected in August in drainages near the Canadian border in Idaho infesting several thousand acres. Some stands of western hemlock and subalpine fir were severely defoliated. Understory Engelmann spruce trees were lightly defoliated. The sawfly overwinters in the egg stage...

Resource Type:

Technical Report
Evaluation of larch casebearer parasites on the Flathead National Forest, Montana, 1985

Creator:

Tunnock, Scott, Bousfield, Wayne E., and United States. Forest Service. Northern Region

Abstract:

An evaluation during the summer of 1985 showed that parasites were still exerting control on the larch casebearer on the Flathead NF. Parasitism ranged from 4 to 60 percent and averaged 25.2 percent in the 12 areas surveyed. Four species of parasites were involved. The most abundant was Agathis pumila...

Resource Type:

Technical Report