This study was aimed to improve the productivity and income of mushroom farming by developing a new casing material as a substitute for clay loam casing soil, which is becoming more difficult to acquire. When the new casing materials were used for the stable production of button mushroom (Agaricus bisporus), a 1:1 mixture of clay loam and button mushroom media obtained after harvest supported 13% greater mycelial growth (32.0 kg/3.3 m²). This material was better than clay loam soil in preventing contamination with environmental compounds and pests. The use of an inexpensive 1:1 mixture of peat moss and coco peat resulted superior mycelial growth with 4% better yield (32.9 kg/3.3 m²) compared with conventional clay loam soil. Advantages of these casing materials included ready availability and improved productivity. Mixtures of peat moss + coco peat + zeolite (50%:30%:20%) and coco peat + coal ash (75%:25%) could substitute for conventional casing soil. Additionally, the novel mixtures containing material obtained after cultivation might be used to produce organic fertilizer.

ABSTRACT
 서 론
 재료 및 방법
 결과 및 고찰
  양송이 복토재료 사용 실태
  양송이 수확후 배지를 이용한 복토 활용
  새로운 복토재료 선발
  선발된 복토재료의 균상재배
 적 요
 REFERENCES

• 김용균(충청남도농업기술원 작물연구과) | Yong-Gyun Kim (Crop Research Division, Chungcheongnam-do Agricultural Research & Extension Services) Corresponding author
• 이병주(충청남도농업기술원 작물연구과) | Byung-Joo Lee (Crop Research Division, Chungcheongnam-do Agricultural Research & Extension Services)
• 이순계(충청남도농업기술원 작물연구과) | Sun-Gye Lee (Crop Research Division, Chungcheongnam-do Agricultural Research & Extension Services)
• 이병의(순천향대학교 산학협력단) | Byung-Eui Lee (Industry Academy Cooperation Foundation, Soonchunhyang University)