Glume blotch (Phaeosphaeria (Leptosphaeria) nodorum)
It can cause considerable damage in wet years, especially where wheat has been grown for several years in succession. Symptoms consist of brown lesions on the glumes and around the nodes. At advanced stage of the disease black spots just like dots can been seen on the lesions. These are fungal spore bodies (pycnidia). The affected leaves become shrivelled with light brown patches on them. Glume blotch is spread by use of infected seeds, rain splash and infected crop residues.
- Use certified disease-free seeds.
- Burn stubble and crop debris after harvest.
- Rotate with non-susceptible crops such fodder grasses or maize.