A recent increase in the severity of silver scurf of potato has caused significant economic losses in many potato-producing areas in the United States. The increase in disease severity appears to be due, at least in part, to the development of thiabendazole (TBZ) resistance in the Helminrhosporium solani population. We evaluated the TBZ sensitivity, temperature response, virulence, and genotypic variability of H. solani isolates from upstate New York (UNY) counties and Suffolk County, New York, (SNY) on Long Island. The growth of TBZ-resistant isolates was inhibited by 50% at a TBZ concentration of 25 μg/ml. Half of the 14 potato tuber samples collected during 1988-1990 in New York (NY) were infected with H. solani isolates that were resistant to TBZ at 25 μg/ml
No takes yet. Share an insight, caveat, or question.
C. L. Merida (1994) studied this question.