• Title/Summary/Keyword: Benomyl

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Inhibition of Penicillium Bulb Rot by Fungicides and Culture Broth of Antagonistic Bacteria during Storage of Lilium Oriental Hybrids (살균제 및 길항세균 배양액 처리에 의한 백합 저장구근의 부패 발생억제)

  • Kim, Byung Sup;Lee, In Kwon;Hong, See Jin;Kim, Hak Ki;Park, Se Won
    • Horticultural Science & Technology
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    • v.19 no.4
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    • pp.591-595
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    • 2001
  • This study was conducted to find out the proper chemicals and doses for controlling the bulb disease of Lilium Oriental hybrids 'Capablanca' and 'Marco Polo' cultivars during storage, and to ascertain any disadvantage of the treatment on shoot growth and flower development. Bulbs of 'Casablanca' and 'Marco Polo' cultivars were dipped in some fungicide solutions, including azoxystrobin, benomyl+thiram, and prochloraz, and culture broth of antagonistic bacteria for one hour. The rot was apparently inhibited by azoxystrobin and prochloraz solution dippings and it was not by benomyl+thiram in bulbs produced domestically. To improve physiological integrity, calcium chloride was treated. However, this treatment had no positive effects on bulb rot of lily. When bulbs were dipped in one-fifth of diluted broth. But the bulb rot was inhibited effectively as compared with untreated during storage. Benomyl+thiram and that with calcium inhibited the sprouting in 'Casablanca' and 'Marco Polo' cultivars during cultivation. Calcium and benomyl+thiram treatments decreased growth of leaf and flower but with no statistically significant difference. Other fungicidal materials treated to bulbs showed no effect on vegetative growth and flower quality.

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Developmental Abnormality in Agricultural Region and Toxicity of the Fungicide Benomyl on Korea salamander, Hynobius leechii (한국산 도롱뇽(Hynobius leechii)의 농경지에서의 배 발생 이상과 살균제 Benomyl의 독성효과)

  • Choi, Yeoung-Ju;Yoon, Chun-Sik;Park, Joo-Hung;Jin, Jung-Hyo;Cheong, Seon-Woo
    • Korean Journal of Ecology and Environment
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    • v.35 no.3 s.99
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    • pp.198-212
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    • 2002
  • A numerical variation and abnormalities were studied on egg bags and embryos of Korean salamander, Hynobius leechii from agricultural habitat. The teratogenic and toxic effects of fungicide benomyl were also investigated with early embryos from non-agricultural habitat. We collected 144 egg bags from agricultural region, and 3418 of early embryos were contained. The lengths of egg bags were varied from 10 to 23 cm and the most frequent length was 19 cm. The number of embryos was varied from 7 to 43, and the most frequent range was 22 to 26. Spontaneous abnormalities were occurred in 406 embryos among 116 egg bags, and 24 kinds of external abnormalities were found. Individuals showing severe external defect were histologically studied and they showed optic dyspalsia, thyroid carcinoma, somatic muscular dysplasia, partial biaxial structure, decrease of red blood cells in the heart, cephalic degeneration and intestinal dysplasia. 385 embryos from non-agricultural region were exposed to 200 nM${\sim}$ 1 ${\mu}$M of benomyl at blastula or gastrula for 12 days. All embryo were dead in the concentration of 1 ${\mu}$M (LD$_{100}$) and 75% of embryos were dead in 800nM of benomyl. Speciflc effect due to benomyl was acrania or cephalic dysplasia and this restult suggests that the benomyl inhibit stongly to the development of neural tissue. These abnormal developments may be caused by antimitotic action, inhibition of tubulin complex, destruction of microtubule, inhibitions of neurulation and closing of neural fold, and by the inhibition of the movement of neural crest cells.

Chemical Control of Fusarium Wilt of Strawberry Caused by Fusarium oxysporum f. sp. fragariae (딸기$\cdot$시들음병(Fusarium oxysporum f. sp. fragariae)의 약제방제)

  • Cho Chong Taik;Moon Byung Ju
    • Korean Journal Plant Pathology
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    • v.1 no.1
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    • pp.28-32
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    • 1985
  • The experiments were carried out to investigate a practical method for controlling wilt of strawberry by fungicides in vitro and in field. Captafol and benomyl were the most effective in inhibiting chlamydos-pore germination and mycelial growth of the fungi. In field tests, captafol, benomyl and thiophanate-methyl showed some control effect against the disease. The propagule number of F. oxysporum f. sp. fragariae in soil was greatly reduced by soil drenches of captabol, whereas that of Trichoderma sp. was increased.

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Simultaneous detection of residual fungicide in Bean Sprouts by Solid-phase Extraction (고체상 추출법에 의한 콩나물 중의 잔류농약 동시 검출)

  • Lee, Myunghwoon;Lee, Taejoon;Pyo, Dongjin
    • Analytical Science and Technology
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    • v.6 no.5
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    • pp.509-514
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    • 1993
  • Benomyl, topsin-M and thiram been known as one of the seed disinfectant. For these studies benomyl, topsin-M and thiram simultaneously had been analyzed by high performance liquid chromatographic method using ODS cartridge, benomyl, topsin-M and thiram was chromatographed using an ODS column and eluent 40% Acetonitrile at a flow rate of 1ml/min. The UV Detector responses at 276nm.

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Analysis of Benomyl by Liquid Chromatography/Time-of-Flight Mass Spectrometer and Its Occurrence in the Environment

  • Seo, Yong-Chan;Kim, Kee D.;Kim, Nack-Joo
    • Bulletin of the Korean Chemical Society
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    • v.23 no.3
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    • pp.432-436
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    • 2002
  • Benomyl, one of the known endocrine disrupting chemicals, was analyzed to understand the fate in the nature. Water, sediment and biota samples are acidified to hydrolyze benomyl into carbendazim then followed by extraction and concentration. The concentrations of carbendazim in the samples were determined by liquid chromatography/time-of-flight mass spectrometer. Analysis data showed that certain amount of carbendazim was accumulated in sediment. On the contrary, no sign of accumulation in biota was observed probably due to the increased degradation rate in vivo. It is, however, that no one can claim carbendazim is not harmful to biota, since carbendazim may give a negative effect against organisms at the point of intaking.

Effects of Benomyl Applications on Phomopsis Infection and Yields in Vegetable Soybean (풋콩의 생육시기별 베노밀 처리가 미이라 감염율 및 수량에 미치는 영향)

  • 노재환;김율호;김홍식;김명기;이길복;김석동
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.42 no.3
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    • pp.299-305
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    • 1997
  • This study was conducted to investigate the effects of benomyl application at different growth stages on the infection of green pod and seed by Phomopsis spp. and yield in vegetable soybean. One early maturing vegetable soybean variety 'Seokryangputkong' was planted on 20 April at Suwon in 1996. The rate of non-infected green pods by Phomopsis spp. was most highly suppressed by benomyl application once at the R5 stage and twice at R4 and R6 stages. The rate of non-infected green pods was higher in branches than in mainstem, and in upper than in low part of plant. The Phomopsis seed decay at maturity was most highly decreased by benomyl application once at the R6 stage and twice at the R4 and R6 stages. Benomyl application effectively reduced the infection rate of green pod and seeds by Phomopsis spp. and increased the yield of non-infected green pods by 34∼76% and non-infected seeds by 51∼98%.

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Fungicide Resistance of Fusarium fujikuroi Isolates Isolated In Korea (우리나라에서 분리한 벼 키다리병균(Fusarium fujikuroi)의 살균제 저항성)

  • Lee, Yong-Hwan;Kim, So-Yeon;Choi, Hyo-Won;Lee, Myeong-Ji;Ra, Dong-Soo;Kim, In-Seon;Park, Jin-Woo;Lee, Se-Weon
    • The Korean Journal of Pesticide Science
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    • v.14 no.4
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    • pp.427-432
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    • 2010
  • Rice bakanae disease caused by Fusarium fujikuroi is one of the most serious rice diseases in Korea. From 2006 to 2009, 118 F. fujikuroi isolates were collected from various regions of rice fields in Korea. Resistance assay of 118 F. fujikuroi isolates to prochloraz, tebuconazole, and benomyl, were performed using agar dilution method. To investigate inhibitory effects of the fungicides, minimum inhibitory concentration of mycelial growth (MIC) and effective concentration inhibiting mycelial growth by 50% ($EC_{50}$) for 118 isolates were calculated using Sigmaplot 8.02 (Antro, SPSS UK, Ltd). Based on the means of $EC_{50}$ values, baseline resistance values were determined as $0.5{\mu}g{\cdot}mL^{-1}$ for prochloraz, $5.0{\mu}g{\cdot}mL^{-1}$ for tebuconazole and $2.5{\mu}g{\cdot}mL^{-1}$ for benomyl. Number of resistant isolates to each fungicide was 17, 19 and 43 for prochloraz, tebuconazole and benomyl, respectively. Furthermore, 4 isolates showed the double resistance to both prochloraz and tebuconazole, 6 isolates to prochloraz and benomyl, and 11 isolates to tebuconazole and benomyl. Isolates CF366 and LF335 isolated from Gyeongbuk province were resistant to the three fungicides tested, prochloraz, tebuconazole and benomyl.

Effect of Drenching Soil with Benomyl, Propiconazole and Fluazinam on Incidence of Disappearing Root Rot of Ginseng

  • A.Monique Ziezold;Robert Hall;Richard D.Reeleder;John T.A.Proctor
    • Journal of Ginseng Research
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    • v.22 no.4
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    • pp.237-243
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    • 1998
  • Three fungicides, Orbit (propiconazole), Benlate (benomyl) and ASC-66835 (fluazinam), were tested as soil drenches to control disappearing root rot (DRR) of ginseng (Panax quinquefolius) in gardens artificially infested with Cylindrocarpon dsstrutans. The incidence of DRR was low (0∼3.5%) in uninfected plots and significantly higher in infested plots (2.6∼19.9%). Significant reductions in the incidence of DRR were observed in 1-year-old and 2-year-old gardens that were treated and assessed for disease in the same year Significant control was not obtained in 3-year-old gardens treated and as secede in the same year, or in 1-year-old or 2-year-old gardens assessed in the year following information. Disease incidence was significantly reduced by 49-77% by low and high rates of benomyl (45 and 1,250 mg a.1./L) and propiconazole (10 and 40 mg a.i./L) and by fluazinam at 150 mg a.i./L. These fungicides seem to be worthy of further investigation as soil drenches to control DRR of ginseng.

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