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Sharp eyespot caused by Rhizoctonia cerealis was assessed in four winter wheat crops surveyed at four locations in north-central Poland in 2006–2009. At the four locations symptoms developed on 41.9–67.7 % of shoots of all plants (average of 4 years) and on 49–73.5 % of shoots of diseased plants (average of 4 years). Slight (category 1) disease was most frequent, occurring on 24.4–41.3 % of shoots...
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