Ecology, Environment and Conservation Paper

ORGANIZATION OF MYCOGONE PERNICIOSA TRIGGERING WETBUBBLE DISEASE (WBD) OF WHITE BUTTON MUSHROOM

Kanika Mahajan, Anil Rao, Sunil Kumar, Vandana Kumari,Ambrish Kumar Mahajan and Anil Kurmi

Abstract

The most extensively farmed mushroom in the world is Agaricus bisporus (Lange) Imbach.WBD, which ispredominantly instigated by Mycogone perniciosa, might pose a severe danger to A. bisporus output over theworld. Because of the similarity between A. bisporus and M. perniciosa, it was predicted that the currentstudy would choose reliable antimycotic agents that could favorably treat this fungal disease onmushrooms.The antimycotic susceptibility of host and pathogen was investigated in vitro using six differentfungicides.The effects of chlorothalonil, carbendazim, thiophanate-methyl, azoxystrobin, difenoconazole,and kresoximmethylon M. perniciosa, the mycoparasite that origins white button mushroom wet bubble disease, wereevaluated in vitro and in vivo. Chlorothalonil and carbendazim were the potent antimycotic agents forreducing M. perniciosa mycelial growth in vitro, with inhibitions of 96.93 percent and 94.15percent,respectively. Chlorothalonil inhibited the pathogen’s mycelial growth at 25-500 ppm, whereas carbendazimdid so at 5 to 100 ppm, with least (16.67 percent) inhibition of A. bisporus mycelium. Difenoconazole, kresoximmethyland azoxystrobin among other fungicides, were shown to be very repressive to the pathogen (91.81percent, 83.26 percent and 71.05 percent) with the largest percentage of inhibition (87.77 percent, 84.44percent and 75.55 percent) of A. bisporus mycelium. Chlorothalonil and carbendazim and thiophanatemethylcontinued to handle WBD in field experiments with a smaller impact on mushrooms than otherfungicides.