Abstract:

The relation of the pathogen quantity of tobacco bacterial wilt in the first leaf at the bottom of a tobacco plant and the outbreak regularity of the disease in different flue-cured tobacco varieties was investigated. The result showed that it was significantly relative between the pathogen quantity of tobacco bacterial wilt and the outbreak regularity of it in different flue-cured tobacco varieties. And the outbreak of the disease in fields was often increased with the development of the pathogen quantity. Therefore, it might be very useful for the forecast and control of tobacco bacterial wilt by the relation of them in south China, especially in Fujian Province.