Apple scab (Venturia inaequalis) and pear scab (Venturia pyrina)
By: by H.P. Barss.
Contributors: Oregon Agricultural College. Extension Service.; Oregon Agricultural College. Dept. of Botany and Plant Pathology.
Series: Cir -- 160.; Circular (Oregon Agricultural College. Extension Service) -- 160.
Publisher: Oregon Agricultural College, Extension Service, Dept. of Botany and Plant Pathology
Place of publication: Corvallis, OR
Language: eng
Subjects: Apple scab -- Oregon.; Apples -- Diseases and pests -- Oregon.; Venturia inaequalis -- Oregon.; Pear scab -- Oregon.; Pear -- Diseases and pests -- Oregon.; Venturia pyrina -- Oregon.
Notes: Caption title.