A new disease, powdery mildew, caused by Oidiopsis taurica on Capsium spp.

고추에 발생하는 흰가루병

Recently, a powdery mildew on the leaves of Capsium spp., Pimento and pepper, occurred greatly in the vinyl-house at Seungchon area, Chonnam province. According to the field survey, the disease is severe at high temperature and high humidity conditions in the vinyl house. Diseased loaves were severely fallen and remained only several top leaves, thus the setting and thickening of fruits were greatly depressed. The pathogenic fungus was identified as Oidiopsis taurica(Lev.) Arn., imperfect stage of Leveillula taurica (Lev.) Arn., The perfect stage of fungus was not observed. Optimum temperatures for conidial germination ranged at $25-30^{\circ}C$ with high humidity.

최근 전남 광산군 일원의 비닐하우스 고추 재배단지에 흰가루병이 많이 발생하고 있어 포장 조사 결과 병은 고온 다습상태하에서 발생이 많다. 이병엽은 대부분 떨어지고 위에 몇잎만 남아 착과나 수량을 저하시킨다. 병원균은 Oidiopsis taurica (Lev.) Sal.로 동정되었으며 분생포자 발아적온은 다습상태하에서 $25\~30^{\circ}C$의 범위였다.