Abstract
Corn cob fusariosis symptoms were observed at four localities of Poland: Radzikow /Central region/, Kobierzyce /South West/, Swadzim /Central West/ and Smolice /Central South/, during the 1985 and 1986 growing season. SpeciesF. subglatinans was found as dominating, causing in about 95% of affected cobs symptoms of "pink ear rot". The other important species ofFusarium which infected corn cobs wereF. culmorum, F. graminearum, F. sporotrichioides, F. avenaceum, F. moni1i forme. A first time in Poland was found the speciesF. crookhiellense. The intensity of particular genotypes fusariosis was expressed as fusariosis index /Fi/ ranging from 0 to 500. Susceptibility to Fusarium ear rot differed significantly between examined corn hybrids and varieties from 0 to 245 Fi, it let to eliminate hybrids very susceptible toFusaria infection of cob.
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