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Now showing items 21-30 of 79
Plant Diseases: An Introduction
(Pullman, Washington : Washington State University. Extension., 1992-10)
The basics of plant diseases are neatly presented on a single fact sheet. Gives brief explanations and an illustration of one very sick plant showing most common appearances of disease on plants. A great teaching or learning ...
Gray Mold (Botrytis Blight)
(Pullman, Washington : Washington State University. Extension., 1994-11)
This common disease in moist climates becomes a serious pest for tomatoes and cucumbers in greenhouses, for field-raised green beans, strawberries, raspberries, in western Washington; and for ornamentals and onions in ...
Sycamore Anthracnose Leaf and Twig Blight
(Pullman, Washington : Washington State University. Extension., 1997-07)
This plant disease affects sycamore and plane trees. Leaves develop lesions and turn brown. The cause is Apiognomonia veneta, a fungus. Cultural control is recommended. Color photos. 2 pages.
Fire Blight
(Pullman, Washington : Washington State University. Extension., 1996-01)
Most severe on pears and often called pear blight, this disease caused by the bacterium Erwinia amylovora also affects apples, quince, mountain ash, hawthorn, cottoneaster, serviceberry, and other members of the rose family. ...
Powdery Mildew
(Pullman, Washington : Washington State University. Extension., 1998-09)
This bulletin explains the symptoms, biology, and control of powdery mildews, which are caused by several similar fungi. Powdery mildews can affect a wide variety of plants, including ornamental flowers and shrubs, grasses, ...
Diagnosis of plant diseases
(Pullman, Washington : Washington State University. Extension., 1974-07)
Black knot of wild cherry
(Pullman, Washington : Washington State University. Extension., 1974-03)
Plant diseases: Gray mold (Botrytis blight)
(Pullman, Washington : Washington State University. Extension., 1973-02)
White rot of onions
(Pullman, Washington : Washington State University. Extension., 1977-04)
Coryneum blight of stone fruits
(Pullman, Washington : Washington State University. Extension., 1994)