Ảnh hưởng của nồng độ hydrogen peroxide trong quản lý nấm mốc Trichoderma afroharzianum đến năng suất nấm bào ngư xám (Pleurotus sajor-caju (Fr.) Singer)

Abstract

The project was carried out to identify the fungus that contaminated on the substrate and the effect of hydrogen peroxide on the yield and yield components of gray oyster mushroom (Pleurotus sajor-caju (Fr.) Singer). This research included the isolation of fungus from contaminated substrate and the evaluation of H₂O₂’s concentration on the yield and yield components of gray oyster mushroom that were grown on rubber tree sawdust. As a result, Trichoderma afroharzianum was isolated and identified. Treating H₂O₂ at different concentrations ranged from 1,000 ppm to 5,000 ppm showed significant potential to inhibit the growth of T. afroharzianum. H₂O₂ concentration of 3,000 ppm showed a high potential to inhibit the harmful effects of T. afroharzianum with insignificant impact on yield and yield components of gray oyster mushroom. At the first harvest, T. afroharzianum showed insignificant effect on yield and H₂O₂ did not affect abalone growth. At the second, third, and fourth harvests, H₂O₂ at the concentration of 3,000 ppm significantly inhibited the development of T. afroharzianum with minimum negative effect on the development of gray oyster mushroom.