关键词: 杉木(45NK49GG), 杉叶散斑壳, 叶枯病(落针病), 植物病害(49LB)

Abstract: Needley cast caused by Lophodermium unicinatum Dark.in seed orchard occured from April on.Peak of their occurrence was both in late May to early June and in late August to middle September of every Year.Ascospore appeared in March till October in ascocarps of the causal fungus.Peak of ascospore dispersal was both in late April till early may and in middle and late June.L.uncinatum was isolated from green needles, green scales of cone and petioles with bark.Integrated management including scarifing, fertilizing and heaping the soil over and around the roots of trees, pruning and spraying with topsin-M for controlling the disease was effective by 88.8%.

Key words: CHINESE FIR, LOPHODERMIUM UNCINATUM DARK, NEEDLE CAST, PLANT DISEASE, TOP HELLING