Isolating and identification of Mycogone sp. and screening of its sensitive fungicides for Agaricus bisporus

A strain of pathogenic fungus was isolated from acutely affected mushroom fruit-bodies by Mycogone sp. in Chongzhou, Sichuan. It was determined that the pathogenic fungus was Mycogone sp. by its pure culture characters, microcosmic characters and reinfected authentication.Through preliminary screening and the second screening, effects of 21 fungicides on the growth of Mycogone sp. mycelia were investigated while 6 better fungicides were determined in composite tests to investigate their effects on the growth of Mycogone sp. mycelia and Agaricus bisporus mycelia. Results in this paper showed that composite fungicides had the better effect than single fungicide. Moreover,this test determined two best combinations.They are Prochloraz (100000 times diluted) and Formaldehyde (40000 times diluted), Sporgon (100000 times diluted) and Jiemeijing (20000 times diluted). Their inhibition rates on the growth of Mycogone sp. were all 100%, but hardly have influence on the growth of Agaricus bisporus mycelia.