First Report of Lasiodiplodia citricola and Neoscytalidium dimidiatum Causing Death of Graft Union of English Walnut in California
California produces 99% of the English walnuts (Juglans regia) in the USA. In August 2012 in Tulare County, about 5,000 out of 90,000 trees were killed in a walnut nursery by a distinct black canker that developed around the graft union. The cankers appeared to be initiated at the heading cut on the...
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Veröffentlicht in: | Plant disease 2013-07, Vol.97 (7), p.993-993 |
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