딸기탄저병의 시기별 발생과 감염경로 = Seasonal Occurrence and Infection Site of Strawberry Anthracnose

다국어 초록 (Multilingual Abstract)

Seasonal occurrence of strawberry anthracnose in greenhouses caused by Colletotrichum sp. was examined from
1997 through 1999 at three locations, Kyeongju, Goryeong, and Cheongdo in Kyungbuk province, Korea. Also
some factors related to the anthracnose infection such as initial infection sites, inoculation methods, and soil
nature were studied through in vitro and field experiments. The anthracnose disease begun to occur from 15
days after transplanting in early October, and continued but gradually decreased thereafter for 2 months until
December. After transplanting, initial infection mainly occurred through the runner of which the tissue was
more susceptible to the anthracnose than those of the leaf and petiole when the fungal mycelial disk was inoculated.
Postplanting inoculation by irrigation with spore suspension was much more effective in inducing the
anthracnose disease than preplanting soil mix. However, without inoculation, no or little anthracnose occurred
regardless of commercial, non-cultivated or diseased field soils when healthy seedlings were planted. This suggests
that occurrence of strawberry anthracnose in fields may be related to contamination of plant propagules
with the anthracnose pathogen.