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RISS 인기검색어
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- 저자 : 박덕환 ( D. H. Park ) (검색결과 3 건)
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박덕환 ( D. H. Park ),변주환 ( J. H. Byeon ),원헌섭 ( H. S. Won ),유재홍 ( J. H. Yoo ),조세열 ( S. Y. Cho ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2012 강원 농업생명환경연구 Vol.24 No.1
In 2010 to 2011, "Gondalbi" (Ligularia stenocephala) leaves and roots with abnormal characteristics, such as leaf spot and blight, necrosis, powdery mildew, chlorosis, and root rot symptoms were collected in field of Yanggu, Gangwon Province. Similar symptoms have been reported by local farmers since 2008, and they required the identity of those associated pathogens to build up environment-friendly control strategies. Symptoms were primarily divided to black spotted leaf blight, anthracnose, brown leaf spot, leaf blight, powdery mildew, vein necrosis, chlorosis, and root rot based on their typical characteristics, which are the most frequent lesions produced in leaves and roots. In the field, the productions of black spotted leaf blight, anthracnose, brown leaf spot, and leaf blight diseases were highest with daily mean diurnal temperature regimes from 10 to 20℃ and >60% relative humidity; root rot and chlorosis severities was highest in the range of 5 to 10℃, whereas >20℃ of diurnal temperature at the late of harvesting season appeared to be related to vein necrosis and powdery mildew. Twelve fungal stains were isolated from disease samples using potato dextrose agar (PDA) supplemented with kanamycin. Phylogenetic analysis on the basis of partial sequences of the 18S rDNA and ITS region of twelve isolates and reference fungi available in the GenBank, the isolates from black spotted leaf blight, anthracnose, brown leaf spot, and root rot diseases were similarly clustered into Phoma glomerata, Colletotrichum spp., Alternaria brassicae, and Rhizoctonia spp., respectively. To our knowledge, this is the first documented report of the presence of several fungal pathogens and these occurrences increase a significant economic impact to "Gondalbi" at Yanggu country.
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박덕환 ( Park,D. H. ),이재홍 ( J. H. Lee ),정태성 ( T. S. Jeong ),황세정 ( S. J. Hwang ),홍대기 ( D. K. Hong ),원헌섭 ( H. S. Won ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2019 강원 농업생명환경연구 Vol.31 No.1
본 연구는 기후 온난화 등의 원인으로 사과재배 적지로 평가받고 있는 강원도 사과재배 농가의 병해충 방제용 농약사용 경향을 파악하고자 실시되었다. 강원도 7개시 · 군 132 사과재배 농가 농약사용실태 분석 결과, 살균제 및 살충제 각각 8회 살포 농가가 대부분으로, 조사시점인 2017년을 기점으로 각각 10년 및 20년 이전에 비해 살포횟수가 대폭 감소한 것으로 조사되었다. 가장 많이 사용된 살균제는 Dithianon, Tebuconazole 및 Mancozeb 등의 수화제였고, 살충제는 Spirotetramat, Acetamiprid 및 Chlorantraniliprole 등이 사용되는 것으로 조사되어, 미등록 및 비적용 약제의 사용은 이루어지지 않고 있었다. 따라서 적정 농약의 사용을 위하여, 앞으로도 지속적인 병해충 방제용 농약사용실태 조사가 필요하며 이를 통한 강원도 사과재배 맞춤형 농약 및 방제력의 선정이 필요하다. This study was conducted to analyze trends in the usage of fungicides and insecticides in 132 apple orchards in Gangwon Province, where the apple cultivation area has recently increase. The number of treatments with both fungicides and insecticides was eight per orchard, indicating that the number of treatments has reduced compared with that 10-20 years ago. The most frequently used fungicides and insecticides were dithianon, tebuconazole, and mancozeb, and spirotetramat, acetamiprid, and chlorantraniliprole WP, respectively. In addition, the cultivators in Gangwon Province are not treated with unregistered pesticides; thus, we assumed that the apple orchards in Gangwon Province might be appropriate in terms of usage of pesticides based on the guide from RDA (Rural Development Administration). We hope to further develop the adapted control strategies using pesticides in apple orchards in Gangwon Province via continuous monitoring.
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