Abstract

Abstract A description is provided for Ploioderma cedri . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Cedrus deodara . DISEASE: This fungus is a pathogen of Cedrus deodara , causing premature defoliation. The incidence of the disease varies from 5-6% of trees in a plantation in Himachal Pradesh (the type locality) to 100% of trees in a natural stand in Jammu & Kashmir. The first symptoms were paling of infected regions of the needles, which then turned yellow and fell prematurely. The effect on the economic potential of the plantation has not been assessed and no treatments have yet been recommended. GEOGRAPHICAL DISTRIBUTION: Asia: India (Himachal Pradesh, Jammu & Kashmir). TRANSMISSION: Presumably by air-borne ascospores in humid conditions.

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