• 식물병과 농업
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• 제1권1호
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• pp.37-44
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• 1995

This study was carried out to select effective fungicides against white and violet root rot caused by Rosellinia necatrix and Helicobasidium mompa with nine fungicides including thiophanate-methyl from 1993 to 1994. Through laboratory, greenhouse and field trials on inhibitory effect of mycelial growth and disease incidence against the two fungal pathogens, 5 fungicides have been selected finally. Thiopanate-methyl, benomyl, iminoctadine-triacetate and isoprothiolane were proven to have high control effect against R. necatrix. In addition to thiopanate-methyl and benomyl, tolclofos-methyl has been selected for effective control of H. mompa, since it showed prominent control effect in field trial than in laboratory or green house test.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.92.1-92
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• 2003

In order to develop an effective spray program for control of apple white rot with reduced use of fungicides, the control efficacy of several fungicides that has been intensively used for control of the disease was assessed. They were sprayed on the same tree with 15 day interval from late May to early August. Just prior to and after each spray, 100 fruits were bagged with two layered fruit bag to limit the chemical application in only one time, and the disease incidence and latent infection frequency on the bagged apples were examined. Some fungicides such as folpet, iminoctadine-triacetate and azoxystrobin showed a high post-infectional activity even though the former two are non- systemic. Folpet suppressed symptom development, iminoctadine-triacetate reduced infection frequency and azoxystrobin acted in both ways. When those fungicides were ！！ adopted in a spray program, once in a cropping season, their post-infectional activity became much greater. This activity shown by the non-systemic fungicides was supposed to be derived from the peculiar infection process of the white rot fungus of which the pathogen is usually remain latent in the corked cells of lenticel until the apple reach mature stage.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.89.2-90
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• 2003

Potato late blight, caused by Phytophthora infestans, is one of the important diseases in potato cultivation areas. Though the incidence of late blight was depend on the inoculums and climatic condition In each fields, the foliar blight was reached to 100％ under the severe disease pressure condition in 2003. Outbreak of foliar blight was concentrated from May and July and evaluation of ten fungicides to control of late blight was made at Daekwallryoung area in potato fields. Based on the company recommendation, those fungicides were applied by a sprayer at the recommended rates on a weekly application schedule. Effect of ten fungicides on foliar blight was based on area under disease progress curve (AUDPC). Across all fungicides was reduced by 77％ in AUDPC and dimethomorph was reduced by 92％ in AUDPC during the same period, respectively. Those fungicide were inhibited the mycelial growth of isolate with different rate in chemical amended medium and several fungicides were completely limited the growth of isolate.

• Bulletin of the Korean Chemical Society
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• 제13권2호
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• pp.110-112
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• 1992

• The Plant Pathology Journal
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• 제33권6호
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• pp.589-596
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• 2017

Chemical management of dollar spot in turf may lead to the development of Sclerotinia homoeocarpa populations with reduced fungicide sensitivity. The objective of this study was to investigate resistance of S. homoeocarpa isolates to triazole fungicides and to test cross-resistance among three triazole fungicides. A total of 66 isolates of S. homoeocarpa were collected from 15 golf courses across Korea, and tested via in vitro sensitivity assay against hexaconazole, propiconazole and tebuconazole. $EC_{50}$ values of the isolates to these fungicides were distributed in the range of $0.001-1.1\;a.\;i.\;{\mu}g\;ml^{-1}$. Based on the $EC_{50}$ values, twelve representative strains were selected as sensitive isolates including control and insensitive isolates with respect to each fungicide. At a concentration of $0.1\;a.\;i.\;{\mu}g\;ml^{-1}$ for all fungicides, the selected strains were distinguished as sensitive or resistant isolates with the mycelial growth inhibition rate of 50% as the criterion. The $EC_{50}$ values of resistant strains exposed to hexaconazole, propiconazole and tebuconazole were 20-50 times, 50-70 times, and 77 times greater, respectively, than that of the control strains. Two isolates of S. homoeocarpa S0-41 and Sh14-2-1 showed sensitivity toward all the fungicides used, while two other isolates Sh7-5-1 and Sh2-1-1 showed resistance to all fungicides. Each isolate showed similar resistance to the three types of triazole fungicides, whereby cross-resistance of isolates was confirmed in the present study; all three triazole fungicide combinations displayed significant correlation coefficients equivalent to or greater than 0.8.

• Journal of Applied Biological Chemistry
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• 제52권3호
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• pp.126-132
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• 2009

살균제 농약의 고추잎 표면에서의 내우성과 수용해 도와의 관계를 구명하기 위하여 수용해도가 다른 5종의 농약 수용액 혹은 농약 현탁액을 고추잎 표면에 점적처리하고 인공강우한 후 고추잎 표면의 농약 잔류율을 상호 비교하였다. 고추잎에 아세톤 수용액으로 점적처리된 살균제 농약은 인공강우량이 증가함에 따라 고추 잎 표면 잔류율이 급속히 감소하다가 점차 둔화되었으며, 인공강우 초기의 내우성은 농약의 수용해도에 반비례하였다. 수용해도가 18mg/L인 dimethomorph는 2.5mm의 강우에도 유효성분 모두가 소실되었다. 수화제 현탁액은 아세톤 수용액보다 내우성이 현저히 작았지만 수용해도가 작은 농약이 역시 내우성이 큰 것으로 나타났다. 평균입경이 작은 chlorothalonil과 mepanipyrim 액상수화제가 수화제보다 내우성이 컸으며, mepanipyrim 현탁액의 내우성은 입경과 반비례 관계를 나타내었다. 따라서 시험한 5 종의 살균제 농약의 고추 및 표면 내우성은 강우 초기에는 농약의 수용해도와 깊이 연관되어 있으며 후기로 갈수록 농약의 입경과 관계되는 미지 요인이 작용하는 것으로 밝혀졌다.

• International Journal of Industrial Entomology and Biomaterials
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• 제14권2호
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• pp.143-146
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• 2007

Concerns of entomopathogenic fungi as alternative pest control agents are increasing even though chemical pesticides have been used as the main control agents for pests and diseases in crop production. This study was conducted to test the influence of fungicides and insecticides on an isolate of Lecanicillium attenuatum that was reported to have the pathogenicity against cotton aphid, because fungicides and/or insecticides can apply with mycopesticides simultaneous, before and/or after. Fungicides fenbuconazole+thiram and propineb inhibited the spore germination and mycelial growth of L. attenuatum CS625; dimethomorph and procymidone did not affect spore germination or mycelial growth. The insecticide abamectin, deltamethrin, imidachropride, and spinosad had no detrimental effects on spore germination or mycelial growth. Therefore, these results demonstrated that careful selection of pesticides and fungicides can be applied to the integrated pest and disease control with microbial pesticide.

• 아시안잔디학회지
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• 제26권2호
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• pp.102-109
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• 2012

Typhula incarnata에 의한 설부병 방제를 위한 살균제의 효과를 골프코스에서 평가하였다. 살균제의 살포효과, 살균제의 혼용효과, 살균제의 살포방법에 의한 효과 및 살포시기에 의한 설부병의 방제효과에 미치는 영향을 용평 골프장에서 평가하였다. 무처리구는 3종의 살균제처리구보다 병 피해가 더욱 심각하였다. 3종의 살균제(Azoxystrobin, propiconazole, tebuconazole)는 Kentucky bluegrass 종과 creeping bentrasss 종의 잔디에서 80% 이상의 설부병을 방제하는 효과가 있었다. 2종 이상의 혼용살포에 의한 설부병의 방제효과는 Kentucky bluegrass 종에서 93% 이상 방제효과가 있었다. Azoxystrobin 살균제를 관주와 경엽살포에 대한 설부병 방제 효과는 2종의 잔디에서 모두 유의성의 차이가 없었다. 살균제 살포시기에 따른 설부병 방제 효과는 tebuconazole 살포구에서 유의성 있었다. 이른 가을에 살포하는 것이 더 효과적이었다.

• Mycobiology
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• 제46권1호
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• pp.33-46
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• 2018

Gray mold (Botrytis cinerea) is one of the most common diseases of strawberries (Fragaria${\times}$ananassa Duchesne) worldwide. Although many chemical fungicides are used for controlling the growth of B. cinerea, the risk of the fungus developing chemical resistance together with consumer demand for reducing the use of chemical fungicides have necessitated an alternative method to control this pathogen. Various naturally occurring microbes aggressively attack plant pathogens and benefit plants by suppressing diseases; these microbes are referred to as biocontrol agents. However, screening of potent biocontrol agents is essential for their further development and commercialization. In this study, 24 strains of yeast with antagonistic ability against gray mold were isolated, and the antifungal activity of the volatile and diffusible metabolites was evaluated. Putative mechanisms of action associated with the biocontrol capacity of yeast strains against B. cinerea were studied through in vitro and in vivo assays. The volatile organic compounds produced by the Galactomyces candidum JYC1146 could be useful in the biological control of plant pathogens and therefore are potential alternative fungicides with low environmental impact.

• 원예과학기술지
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• 제18권6호
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• pp.827-833
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• 2000

본 실험은 왜화제인 daminozide, chlormequt, uniconazole, paclobutrazole과 triazole계 살균제인 hexaconazole, microbutanil, difenoconazole, terbuconazole, bitertan이 등이 'New Guinea' 임파첸스의 생육에 미치는 영향을 조사하과 수행하였다. 왜화제를 처리한 실험에서 'Anguilla'와 'Papete' 모두 초장과 plant canopy는 모든 종류의 왜화제처리에 의하여 감소하였으며 특히 uniconazole과 pachlobutrazole이 지상부 생육억제에 효과적이었다. 그러나 엽록소 함량은 오히려 증가하였고 줄기의 직경도 증가하는 경향을 보였으나 처리된 약제의 가장 높은 농도에서 효과적이었다. Triazole계 살균제의 실험에서도 왜화제처리 실험의 결과와 유사한 경향으로 'Papete', 'Pagopago', 'Martinique' 모두 초장과 plant canopy가 모든 약제에서 현저하게 감소하였으며 잎의 생장도 억제하였다. 반면에 엽록소 함량은 오히려 증가하였고 줄기의 직경은 처리된 약제의 고농도에서 증가하는 경향을 보였다. 이상과 같은 결과들은 'New Guinea' 임파첸스 분화의 품질향상을 위하여 hexaconazole, microbutanil, difenoconazole, terbuconazole, bitertanol 등과 같은 triazole계 살균제들을 이용할 수 있다는 것을 제시하였다.