Symptoms often appear first on older leaves near the ground as dark brown spots surrounded by a zone of yellowing or chlorosis.
Fusarium ear blight
Patches of early senescence and bleaching on the ears, with harvested grains appearing pale, shrivelled and often tinged with pink pigmentation
Light Leaf Spot
Disease of oilseed rape and some vegetable brassicas, caused by the fungus, Pyrenopeziza brassicae.
Net blotch of barley (causal pathogens: Pyrenophora teres f. sp. teres (Net form) & P. teres f.sp. maculata (spot form)
Septoria leaf blotch
Following the latent phase, where the fungus can develop undetected by eye, pale brown lesions appear on the leaves with small dark fungal bodies inside.
Take-all root disease
Black necrotic lesions on the roots and patches of prematurely senescing, thin and stunted plants with small ears and little or no grain filling.