Zinc chloride treatment for pear blight cankers
By: Leonard H. Day ...
Series: California. Agricultural Extension Service. Circular -- 45; Circular (University of California Agricultural Extension Service) -- 45.
Publisher: University of California, College of Agriculture
Published: 1930
Place of publication: Berkeley, Calif
Language: eng
Number of pages: 13
Subjects: Pear; Zinc chloride; Fire-blight; Diseases and pests