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Survey of hardwood defoliation in the Turtle Mountains, North Dakota

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Survey of hardwood defoliation in the Turtle Mountains, North Dakota

Tunnock, Scott; United States. Forest Service. Northern Region. State & Private Forestry
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Name: no. 73-19_ocr.pdf
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URI: http://hdl.handle.net/1957/3285
Date: 1973

Description:

A looper, probably the Bruce spanworm, Operophtera bruceata (Hulst), defoliated more than 15,650 acres of quaking aspen in the Turtle Mountains of North Dakota in the spring of 1973.
Subject: Hardwoods -- Diseases and pests -- North Dakota -- Turtle Mountains
Operophtera -- North Dakota -- Turtle Mountains
Defoliation -- North Dakota -- Turtle Mountains

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