Residual Efficacy, Appropriate Application Dose and Timing of Copper Bactericides and Establishment of Disease Control System for Bacterial Shoot Blight of Tea

Tomihama, Tsuyoshi; Nakamura, Takahisa

doi:10.5979/cha.2006.102_7

Chagyo Kenkyu Hokoku (Tea Research Journal)

2006

DOI: 10.5979/cha.2006.102_7

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Residual Efficacy, Appropriate Application Dose and Timing of Copper Bactericides and Establishment of Disease Control System for Bacterial Shoot Blight of Tea

Tsuyoshi Tomihama¹,

Takahisa Nakamura²

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Cited by 2 publications

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Environmental Control in Tea Fields to Reduce Infection by Pseudomonas syringae pv. theae

Tomihama¹,

Nonaka²,

Nishi³

et al. 2009

Phytopathology®

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Bacterial shoot blight (BSB) disease, caused by Pseudomonas syringae pv. theae, is a major bacterial disease of tea plants in Japan. BSB mainly occurs in the low-temperature season, and lesion formation by P. syringae pv. theae is enhanced by both low temperature and the presence of ice nucleation-active Xanthomonas campestris (INAX), which catalyzes ice formation at -2 to -4 degrees C and is frequently co-isolated with P. syringae pv. theae from tea plants. Low temperature is thus the most important environmental factor influencing the incidence of BSB; however, the effects of low temperature on infection of the host by P. syringae pv. theae and of environmental controls in fields on the occurrence of the disease are poorly understood. In this study, we show that ice formation on tea leaves by INAX enhanced P. syringae pv. theae invasion into leaf tissue. The natural incidence of BSB in the field was closely related to early autumn frost. Frost protection in late autumn, which prevented ice formation on tea plants, significantly decreased the incidence of BSB, and frost protection combined with bactericide application held the incidence under the economic threshold level. Our data indicate that environmental control in the field based on microbial interactions in the host offers a new strategy for plant disease control.

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Environmental Control in Tea Fields to Reduce Infection by Pseudomonas syringae pv. theae

Tomihama¹,

Nonaka²,

Nishi³

et al. 2009

Phytopathology®

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show abstract

Control efficacy of a basic copper sulfate flowable formulation for bacterial shoot blight on tea plant

Yoshida

2022

Kyushu Pl. Prot Res.

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Residual Efficacy, Appropriate Application Dose and Timing of Copper Bactericides and Establishment of Disease Control System for Bacterial Shoot Blight of Tea

Cited by 2 publications

References 3 publications

Environmental Control in Tea Fields to Reduce Infection by Pseudomonas syringae pv. theae

Environmental Control in Tea Fields to Reduce Infection by Pseudomonas syringae pv. theae

Control efficacy of a basic copper sulfate flowable formulation for bacterial shoot blight on tea plant

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