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Subject: First report of Botryosphaeria rhodina on pistachios found in California
Date posted: January 07, 2003
Source: Plant Disease Notes Nov 2002 (vol. 86 no.11, p.1273)
Kern County, California pistachio (Pistacia vera L.) growers identified the fungus Botryosphaeria rhodina as the causal agent of a shoot blight on their summer of 2000 and 2001 pistachio crops. Commercial orchards are typically plagued with a panicle and shoot blight caused by Botryosphaeria dothidea. Symptoms of B. rhodina are similar to B. dothidea but B. rhodina only affects the shoots and not the shoots and panicles as with B. dothidea. This is the first report worldwide for B. rhondina on pistachio. Surveys are being conducted to delimit the spread in California.