Research in Plant Disease 2005;11(1):39-42.
Published online June 30, 2005.
딸기 흰가루병 방제를 위한 수확전 약제 처리 시기
남명현, 정석기, 장창순, 송정영, 김홍기
Efficacy by Application Schedule of Fungicides before Harvest Stage for Control of Strawberry Powdery Mildew
Myeong Hyeon Nam, Suck Kee Jung, Chang Soon Jang, Jeong Young Song, Hong Gi Kim
Powdery mildew, caused by Sphaerotheca aphanis var. aphanis, is an economically significant disease of strawberry in Korea. When powdery mildew is not controlled adequately, it often spreads rapidly through strawberry plants and damage is associated with reduced yields. Proper timing of fungicide applications is, therefore, essential for effective disease control. This study evaluated the efficacy by application schedule of fungicides before harvest stage for preventing powdery mildew in 2001-2003. The systemic fungicides, azoxystrobin, kresoxim-methyl, and cupper fungicide DBEDC were applied preventively during the first part of the cultivating season. Preventative applications of DBEDC by dipping treatment before transplanting and kresoxim-methyl by foliar spray before blooming stage were one of the most effective control schedule tested to prevent and manage this disease. This research demonstrated the significance of application time to control of powdery mildew, particularly provided elimination unnecessary sprays of agrochemicals and reductioncosts for strawberry growers.
Key Words: Application schedule, Fungicide control, Powdery mildew, Sphaerotheca aphanis, Strawberry

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