Gummy stem blight
and plant parts from previous crop that may serve as inoculum source for the new crop prevent condensation on all plant parts at all times Extra Silicon [...] occur, hence the name gummy stem blight. On the lesions, black specks, the new fruiting bodies with spores, become visible. On the leaves, round and extending [...] the main source of dispersal of disease upwards in the crop and the conidia for spread of the disease downwards. How to prevent Gummy stem blight Before cropping: