Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Factors Affecting Growth of Trichoderma spp. with Special Reference to Control of Green Mildew in Agaricus bisporus

양송이 푸른곰팡이병균(Trichoderma spp.)의 생장에 미치는 요인과 방제법

  • Park Won Mok (Department of Applied Mycology and Mushroom, Institute of Plant Environment, Office of Rural Development) ;
  • Kim Dong Soo (Department of Applied Mycology and Mushroom, Institute of Plant Environment, Office of Rural Development) ;
  • Park Yong Hwan (Department of Applied Mycology and Mushroom, Institute of Plant Environment, Office of Rural Development) ;
  • Chung Hoo Sup (Department of Agricultural Biology, College of Agriculture, Seoul National University)
  • Published : 1971.10.01
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Abstract

Four species of Trichoderma causing green mildew of Agaricus bisporus were isolated from 38spots of mushroom growing areas in Korea. These are T. koningi, T. lignorum, T. glaucum and an unidentified species, and their frequencies of occurrence are $50\%,\; 32\%,\; 13\%; and\; 5\%$ respectively. All of these species grew well in potato dextrose, Waksman's and Richard's solution, and preferred acid (pH. 4) to neutral. The temperature in mushroom trouse should be kept at $15^{\circ}C$ during cropping period, not only for the high yield of mushroom but also for the prevention of green mildew of mushroom caused by Trichoderma spp . T. lignorum was killed in soil on an exposure of 60 minutes at $70^{\circ}C$ and when exposed for 30minutes at $80^{\circ}C$. Peak heat procedure of compost eliminated T. lignorum and T koningi.

본 시험은 우리나라에서 발생하는 푸른곰팡이병균의 종의 빈도와 발병환경 및 방제법을 구명코져 실시하였다. 시험결과 Trichoderma koningi, T. lignorum, T. glaucum과 미동정의 1종등 4종의 병원균이 분리되었고 이들의 빈도는 각각 $50\%\;32\%,\;13\%$와 $5\%$이었다. 푸른곰팡이병균은 감자배양액, 왁스만배양액과 리차드배양액에서 생육이 잘 되었으며 중성-염기성배지에서는 생육이 불량한 반면 산성에서 생육이 왕성하였으며 최적산도는 pH4였다. 양송이 수확기간 중 재배사내의 온도는 $15^{\circ}C$내외 일 때 본명의 발생이 적었고 수량이 많으며 $20^{\circ}C$이상에서는 본병의 발생이 격심하였다. 푸른곰팡이병균은 복토흙 소독시 $70^{\circ}C$에서 60분, 혹은 $80^{\circ}C$에서 30분간 열처리하므로서 완전히 사멸하였고 퇴비 후발효 과정에서도 사멸되었다.

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