Dipping Strawberry Plants in Fungicides before Planting to Control Anthracnose

Research in Plant Disease 2014;20(1):54-58.
Published online December 15, 2014.

딸기 탄저병 방제를 위한 정식 전 살균제 침지처리 효과

남명현¹* · 이인하¹ · 김홍기²**

¹충남농업기술원 논산딸기시험장, ²충남대학교 응용생물학과

Dipping Strawberry Plants in Fungicides before Planting to Control Anthracnose

Myeong Hyeon Nam1*, In Ha Lee1 and Hong Gi Kim2**

¹Nonsan Strawberry Experiment Station, Chungnam ARES, Nonsan 320-862, Korea
²Department of Applied Biology, Chungnam National University, Daejeon 305-764, Korea

Correspondence: Myeong Hyeon Nam?,

Myeong Hyeon Nam Tel : +82-41-733-3161 Fax: +82-41-733-3163 E-mail: namtel7@korea.kr

Hong Gi Kim Tel : +82-42-821-5768 Fax: +82-42-823-8679 E-mail: hgkim@cnu.ac.kr

Received: January 09, 2014 Revised: February 06, 2014 Accepted: March 10, 2014

Abstract

Anthracnose crown rot (ACR), caused by Colletotrichum fructicola, is a serious disease of strawberry in Korea. The primary inoculums of ACR were symptomless strawberry plants, plant debris, and other host plants. To effectively control anthracnose in symptomless transplanted strawberries, it is necessary to use diseasefree plants, detect the disease early, and apply a fungicide. Therefore, in 2010 and 2011, we evaluated the efficacy of pre-plant fungicide dips by using strawberry transplants infected by C. fructicola for the control of anthracnose. Dipping plants in prochloraz-Mn for 10 min before planting was most effective for controlling anthracnose in symptomless strawberry plants and resulted in more than 76% control efficacy. Azoxystrobin showed a control efficacy of over 40%, but plants treated with pyraclostrobin, mancozeb and iminoctadine tris showed high disease severity. The control efficacy of the dip treatment with prochloraz-Mn did not differ with temperature and time. Treatment with prochloraz-Mn for more than an hour caused growth suppression in strawberry plants. Therefore, the development of anthracnose can be effectively reduced by dipping strawberry plants for 10 min in prochloraz-Mn before planting.

Key Words: Anthracnose, Disease control, Prochloraz-Mn, Symptomless strawberry plant