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peer-reviewed research article

Distribution of pear decline virus in California orchards

authors

J. F. Doyle, Sun Joaquin Valley Agricultural Research and Extension Center, Parlier
H. J. O'reilly, U. C. Davis, Dept. of Agriculture, Victoria, B. C., Canada
G. Nyland, Dept. of Plant Pathology, U.C. Davis
B. Bearden, Mendocino, El Dorado, Lake, Sacramento and Tulare Counties
R. Bethell, Mendocino, El Dorado, Lake, Sacramento and Tulare Counties
C. Hemstreet, Mendocino, El Dorado, Lake, Sacramento and Tulare Counties
G. Morehead, Mendocino, El Dorado, Lake, Sacramento and Tulare Counties
S. Sibbett, Mendocino, El Dorado, Lake, Sacramento and Tulare Counties

publication information

California Agriculture 24(6):14-15. DOI: 10.3733/ca.v024n06p14. June 1970.

Summary

Summary Not Available – First paragraph follows:

Pear decline virus is present in both healthy and weak appearing pear trees on all common rootstocks in commercial orchards in California. Vigorous condition of any tree probably results from true tolerance of the rootstock to the disease rather than the chance that it may have escaped infection. Research suggests a possible relationship between pear leaf curl and pear decline.

author affiliations

J. Doyle is Pomology Technician, Sun Joaquin Valley Agricultural Research and Extension Center, Parlier. H. J. O'Reilly was Extension Plant Pathologist, U. C. Davis, and is now Provincial Plant Pathologist, British Columbia, Dept. of Agriculture, Victoria, B. C., Canada. G. Nyland is Professor, Dept. of Plant Pathology, U.C. Davis. B. Bearden is Farm Advisor in Mendocino, El Dorado, Lake, Sacramento and Tulare Counties respectively. R. Bethell is Farm Advisor in Mendocino, El Dorado, Lake, Sacramento and Tulare Counties respectively. C. Hemstreet is Farm Advisor in Mendocino, El Dorado, Lake, Sacramento and Tulare Counties respectively. C. Morehead is Farm Advisor in Mendocino, El Dorado, Lake, Sacramento and Tulare Counties respectively. S. Sibbett is Farm Advisor in Mendocino, El Dorado, Lake, Sacramento and Tulare Counties respectively.


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