Xanthomonas campestris otherwise spread of the said disease may not be prevented and or would occur repeatedly . For greenhouse grown seedlings , it is advised to use new and or sterilized flats and soil less mix . Seedbeds must be mounted on places far from the production fields especially in those areas wherein vegetable crops , particularly crucifers , for at least 2 years . Also , seedbeds must be situated in areas wherein air circulation is good to enable the plants ' foliage to dry quickly...











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