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Time to watch for blackleg symptoms
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Small lesions at the leaf axil (where the stem of a leaf meets the branch) or long lesions the entire height of the plant... "In the past plants only had leaves during the main infection period in the winter, but now plants may have already begun elongation during the winter, so that the plants have stems and branches to be directly infected," Dr Marcroft says... GRDC-funded research undertaken in 2015 by Marcroft Grains Pathology in glasshouses showed that when plants were infected after elongation the upper-stem infections occurred, whereas when they were inoculated during the vegetative stage they developed 'traditional' crown canker but escaped the stem/branch infection...
NVT Online Papers
GRDC Final Reports