grey-brown. This is, in fact, the sporulation of the pathogens extruding from the stomata. In lettuce, the foot is infected first and this causes the…
is low, infection may remain latent until conditions are more favourable. This makes it more difficult to recognize infected fields. Damage symptoms…
the spring. The bacteria are also introduced in a crop in new transplants. This bacterium is very resistant to desiccation and can survive well in dry…
to stop the fungus from spreading. This gum blocks the xylem and causes the wilting which is the main symptom of this Fusarium species. Higher up in…
soil happens via water, since the zoospores can readily move through water. This explains why the disease spreads more rapidly when the water content…
spread to neighbouring plants. The zoospores disperse via water. Therefore, this disease spreads most rapidly in wet conditions with a high water…
wilts and rots. White, fluffy fungal mycelium grows on the lesions, giving this disease its name cottony soft rot. In the mycelium, big, dark…
Alternaria solani Early blight General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the…
Botryotinia fuckeliana Botrytis General Grey mould ( Botryotinia fuckeliana / Botrytis cinerea ) is a commonly found fungus in many environments. It…
Fusarium oxysporum Fusarium wilt General Fusarium is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a…
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