are each selectively pathogenic on a limited number of crops. Even within one crop, different formae speciales may occur and cause different symptoms.…
years. On other fields on the same farm, no seed potatoes can be grown for one year after infection. Life cycle and appearance of Bacterial canker of…
are each selectively pathogenic on a limited number of crops. Even within one crop, different 'formae speciales' may occur and cause different…
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