Division Note:F1
United Kingdom
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Detection of R. solanacearum in surface water is most reliable during late spring, summer and autumn seasons when water temperatures exceed 15 °C.
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Repeated sampling at different times in the above mentioned period at designated sampling points will increase the reliability of detection by reducing the effects of climatic variation.
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Take into account the effects of heavy rainfall and the geography of the watercourse to avoid extensive dilution effects that may obscure presence of the pathogen.
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Take surface water samples in the vicinity of host plants if these hosts are present.