Bacterial blight eliminated from California cotton gins W. C.
Schnathorst California Agriculture 21(12):11-11. DOI:
10.3733/ca.v021n12p11. W. C. Schnathorst is USDA Research Plant
Pathologist and Associate in the Experiment Station, Department
of Plant Pathology, University of California, Davis. Abstract
Not Available – First paragraph follows: The bacterial blight
pathogen, Xanthomonas malvacearum on cotton, Gossypium hirsutum,
has not been found in San Joaquin Valley fields since 1961. Its
ability to survive for up to seven years in dried cotton refuse
might lead to long-term contamination of cotton gins, however.
This would in turn provide an opportunity for the pathogen to
again contaminate planting seed, with consequent recurrence of
the disease in the field. Field eradication, dilution of
contaminated refuse, and decreasing viability of the pathogen
with age were expected to result in the disappearance of the
pathogen from cotton gins in California. This report deals with
attempts to determine whether c