• 한국미생물·생명공학회지
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• 제10권4호
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• pp.297-305
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• 1982

한국산 미곡 밀양 25호의 저장중에 출현한 균류의 생육환경조건을 조사하고, 이들 균류에 의한 미곡의 부패를 억제하기 위하여 선정된 훈연제의 최적처리조건을 검토하여 다음과 같은 결과를 얻었다. 1. 대부분의 균류는 수분함량 19%, 상대온도 80% 이상의 미곡에서는 10~30일 이내에 잘 생육하였다. 그러나 수분함량 12.5~l3.0 %의 미곡에서는 Aspergillus candidus, Asperillus versicolor, Penicillium chrysogenum 및 Trichothecium roseum만 2개월 이내에 육안으로 생육이 확인되었고, 기타의 균류는 현미경하에서 균계의 생육만 관찰 할 수 있었다. 2. 10종류의 공시훈엽제중에서 저장균류의 생육을 억제하는데 가장 효과가 있었던 것은 ethylene oxide였으며 그 최저처리농도 및 시간은 16mg/$\ell$와 48시간이었다. 동일처리시간에서 methylbromid는 32mg/$\ell$, acrilonitrile과 methyl iodide는 64mg/$\ell$가 최저처리농도였으며, ammonia, methyl formate, ethyl formate, carbon dioxide 및 propionic acid는 주어진 처리조건에서 거의 효과가 없었다.

• 한국균학회지
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• 제3권1호
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• pp.21-25
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• 1975

울산지역(蔚山地域)의 화학공장(化學工場)들의 폐수(廢水)가 흐르고 있는 곳의 4개지점(個地點)(four stations)의 수중총수은함유량(水中總水銀含有量) 및 미생물(微生物) 분포(分布)를 각각 조사하였다. 이 조사(調査)의 결과(結果)를 요약(要約)하면 다음과 같다. 1) 총수은함유량(總水銀含有量)은 불검출(不檢出)로부터 0.075ppm이고, 평균 0.03ppm인데 A지점(地點)이 가장 많았다. 2) 미생물(微生物)의 분포(分布)로는 Bacteria, Mucor, Aspergillus Cladosporium, Trichothecium(T. roseum) 각(各)1종(種), Penicillium 4종(種), Sterile hyphae 3종등(種等) 12균주(菌株)을 분리(分離)하였다. 3).이들 미생물(微生物)의 생육정도(生育程度)의 수은함유량(水銀含有量)과의 관계를 조사한 결과, 무기수은(無機水銀)에 있어서는 10ppm까지에서 대부분 생육(生育)하였으며, 그중 Pe. sp. No.1은 50ppm에서도 생육(生育)하였다. 유기수은(有機水銀)에 있어서는 2ppm에서 어느정도 생육(生育)에 저해(阻害)를 받는것 같이 보였다.

• 한국환경농학회지
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• 제33권3호
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• pp.184-188
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• 2014

BACKGROUND: White stain symptom caused by Acremonium acutatum and Trichothecium roseum, is one of the most important diseases on the grape. This disease occurs national-wide in Korea and causes irreversible damage on grape, at harvest season. This study was conducted to develop environment-friendly control method against white stain symptom. METHODS AND RESULTS: Environment-friendly materials were tested for control activity against A. acutatum and T. roseum in vitro and in vivo. The effect of environment-friendly materials against white stain symptom on grape in farmer's greenhouse was examined. The materials, NaDCC and sulphur, were sprayed three times on the leaves and fruit of grape at the two sites of farmer's field, Anseong and Hwaseong of Gyeounggi. To evaluate control effect of NaDCC and sulphur against white stain symptom, the disease severity was investigated after the two materials were sprayed from the disease onset three times at the 7-day intervals. NaDCC showed efficacy of 59.71% for Kyoho and 72.26% for Campbell-Early, and sulphur showed 78.31% for Koyho and 66.19% for Campbell-Early. CONCLUSION: We were selected sulphur and Sodium-Dichloroisocyannurate(NaDCC) based on the results of experiments in vitro. In field test, sulphur and NaDCC showed suppressive effect in the white stain symptom of grape. These results suggested that NaDCC and sulphur selected can be used as control agents for controlling white stain symptom on grape.

• The Plant Pathology Journal
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• 제22권4호
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• pp.375-380
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• 2006

In the survey from 1992 to 2000, twenty-eight parasitic diseases were observed in major apple producing areas in Korea. The predominant apple diseases were white rot(Botryosphaeria dothidea), Marssonina blotch(Marssonina mali), Valsa canker(Valsa ceratosperma), Alternaria leaf spot(Alternaria mali), and bitter rot(Collectotrichum gloeosporioides and C. acutatum). Apple scab that reappeared in 1990 after disappearance for 15 years was disappeared again since 1997. A viroid disease(caused by apple scar skin viroid) was newly found in this survey. The five diseases, fire blight(Erwinia amylovora), black rot(Botryosphaeria obtusa), scab(Cladosporium carpophilum), Monochaetia twig blight(Monochaetia sp.), and brown leaf spot(Hendersonia mali), which had once described in 1928 but no further reports on their occurrence, were not found in this survey. However, blossom blight(Monilinia mali), brown rot(Monilinia fructigena), and pink rot(Trichothecium roseum), which did not occur on apple after mid 1970s, were found in this survey.

• 한국환경농학회지
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• 제33권3호
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• pp.178-183
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• 2014

BACKGROUND: The white stain symptom of grape clusters and canes by dust-like particles occurred in many vineyards recently. This study was conducted to investigate the ecological characteristics of white stain symptom in grapevines and vineyards. METHODS AND RESULTS: Optimal climate condition for white stain symptom was $25^{\circ}C{\sim}30^{\circ}C$ with 60% of humidity. Moreover, closed condition with same humidity showed higher incidence rate of white stain symptom than ventilation condition. Grape varieties with black berry skin such as Campbell-Early and Kyoho were more sensitive to white stain symptom compare to varieties with green and red berry skin. Although the pathogens were not detected until March, they increased from April, and increased sharply from mid of July. The pathogens may overwinter in the infected stems and/or on the bark as a mycelium. According to the increase of sugar content of grape from August to September, the mycelium which was parasitic on the bark grew to move to the fruits through the stems, and finally reached the fruit stalk to detach berries from the clusters. CONCLUSION: Well ventilation is recommended inside the vineyard since mid-July with roll up an insect net. In addition, infected stems and fruits should be removed out from grapevines infected with pathogens in the vineyards.