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First Report and Virulence Evaluation of Erwinia carotovora subsp. betavasculorum on Sugarbeet in Montana

Nina K. Zidack and Barry J. Jacobsen

6 July 2001


Bacterial vascular necrosis of sugarbeet was identified in Montana. The Montana isolate was found to be more virulent than California isolates when plants were inoculated by injecting Ecb into the petiole. Growers in northern sugarbeet-growing areas should know the potential for this disease during warm summers. Also, the Montana isolate should be used to screen varieties for resistance for Montana growers: California isolates are not suitable. Disease management recommendations are given.


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