Pesticide applications can be reduced by forecasting the occurrence of fireblight bacteria
AuthorsSherman V. Thomson
Milton N. Schroth
William J. Moller
Wilbur O. Reil
James A. Beutel
Clarence S. Davis
Authors AffiliationsSherman V. Thomson is Assistant Professor, Department of Plant Pathology, Berkeley; Milton N. Schroth is Professor, Department of Plant Pathology, Berkeley; William J. Moller is Plant Pathologist, Cooperative Extension, Department of Plant Pathology, Davis; Wilbur O. Reil is Staff Research Associate, Cooperative Extension, Department of Plant Pathology, Davis; James A. Beutel is Cooperative Extension Specialist, Department of Pomology, Davis; Clarence S. Davis is Entomologist, Cooperative Extension, Berkeley.
Hilgardia 31(10):12-14. DOI:10.3733/ca.v031n10p12. October 1977.
Fireblight, caused by the bacterium Erwinio amylovora, is an erratic and devastating disease of pear orchards. Native to North America, it was first observed in California in the 1890s after slowly crossing the continent from the east, decimating pear orchards in its path. Fireblight has the potential to destroy an established orchard in one season if uncontrolled. With 37,440 acres of hearing trees producing a crop of 353,500 tons valued at $44 million, California pear producers have traditionally spared little in their protection efforts to keep the disease in check.
Also in this issue:Guilt by association
Hydrilla, a new noxious aquatic weed in California
Vineyard management and nematode populations
Biological control: Pitting insects against insects
Walnut varieties differ in susceptibility to codling moth damage
Jojoba wax extraction and bleaching
Controlling powdery mildew in field roses
Beet free periods—the key to higher sugar beet yields
New and redescribed species of Ledermuelleria from North America (Acarina: Stigmaeidae)