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Ri-plasmid in the plant tissue and causes a genetic change in the plant. Damage symptoms The four pathogenic Rhizobium species cause different…
Infection of carrots during post-harvest storage causes dry, sunken, black lesions. Typically, Alternaria causes spots on leaves, petals and stems.…
crops. Even within one crop, different 'formae speciales' may occur and cause different symptoms. This species is the only Fusarium that actually…
and cause primary infection of the leaves. Survival can be several years, up to eight years for several Alternaria spp. Typically, Alternaria causes…
mildew of Cucurbits General Pseudoperonospora cubensis is a plant pathogen causing downy mildew on cucurbit crops like cucumber, cantaloupe, pumpkin,…
nd plant parts, leaf wetness is required. Dispersal is by wind and rain causes the pathogen to be returned to the soil from infected plants. Dispersal…
of crops. Even within one crop, different formae speciales may occur and cause different symptoms. Fusarium oxysporum is the only Fusarium that…
foot rot complex, which causes rotting of the foot and may cause death of the plants. In cucumber and tomato the fungus causes lesions on pruning…
Leveillula Powdery mildew General Powdery mildew is a fungal disease that is caused by many different species of fungi such as Erysiphe, Podosphaera,…
affect plants that are in a sub-optimal condition or suffer from stress, caused for example by too much water, too high or low temperatures or sudden…
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