A Severe Epidemic of Marssonina Leaf Blight on Quaking Aspen in Northern Utah PDF Download

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A Severe Epidemic of Marssonina Leaf Blight on Quaking Aspen in Northern Utah

A Severe Epidemic of Marssonina Leaf Blight on Quaking Aspen in Northern Utah PDF Author: Roy O. Harniss
Publisher:
ISBN:
Category : Fungal diseases of plants
Languages : en
Pages : 8

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Book Description
The extent of Marssonina leaf blight (Marssonina populi) on quaking aspen (Populus tremuloides) was observed in northern Utah and adjacent States in 1981 and 1982. Area of the epidemic and symptoms of the disease are described. On 1,000 acres (405 hal) in northern Utah, infection levels were 6 percent slight, 12 percent light, 32 percent moderate, 16 percent moderately heavy, and 34 percent heavy.