Leaf mould (Mycovellosiella fulva)
Symptoms of leaf mould are pale-green or yellowish areas with undefined margins that appear on the upper leaf surface. Under humid conditions the lower leaf surfaces of the spots become covered by an olive-green to greyish-purple velvety growth of the fungus.
- Prune and stake to reduce humidity.
- Avoid excessive shading by providing adequate plant and row spacing.
- Avoid wetting leaves when watering.