TY - JOUR AU - Doyle, J. F. AU - O'reilly, H. J. AU - Nyland, G. AU - Bearden, B. AU - Bethell, R. AU - Hemstreet, C. AU - Morehead, G. AU - Sibbett, S. TI - Distribution of pear decline virus in California orchards JF - California Agriculture JO - Calif Agr Y1 - 1970/06/01 VL - 24 IS - 6 SP - 14 EP - 15 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v024n06p14 AB - 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.