บทคัดย่องานวิจัย

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Scleroderris canker in New York State: attempts to justify and cope with regulatory action.

Hudler, G. W. and Neal, B. G.

European Journal of Forest Pathology Year: 1990 Vol: 20 Issue: 2 Pages: 106-112 Ref: 8 ref.

1990

บทคัดย่อ

Scleroderris canker in New York State: attempts to justify and cope with regulatory action.

Experiments were performed (a) to determine whether Gremmeniella abietina could cause infections south of its currently known southern limit, (b) to test the relative susceptibility of various conifer species grown as Christmas trees in NY, and (c) to examine possible postharvest treatments to eradicate the pathogen from cut trees without damaging their quality. Field infection tests showed that the disease could occur up to 300 km south of the current limit; Pinus resinosa, P. sylvestris, P. nigra and P. densiflora were all susceptible, while Pseudotsuga menziesii and Picea glauca were not infected. Immersion of diseased seedlings in hot (55 deg C) water and immersion in or spraying with dilute sodium hypochlorite eradicated the pathogen with no apparent loss in needle colour or retention.