Efficiency of bird’s nest fungi (Cyathus sp.) for biological control of soil-borne plant pathogenic fungi

Abstract

Theefficiency of bird’s nest fungi (Cyathus sp.) to inhibit the mycelial growth of soil-borne plant pathogenic fungi was carried out by dual culture technique. The results showed that Cyathus sp. inhibited the mycelial growth of Fusarium oxysporum f.sp. lycopersici (FOL), but not inhibit Pythium aphanidermatum, Sclrotium rolfsii and Rhizoctonia sp. The most inhibition obtained from isolate KKU1 and KKU2 which 63.64 and 62.22 %inhibition of mycelial growth with 22.46 and 21.84% overgrowth, respectively. The culture filtrate of Cyathus showed no effect to FOL conidial germination, but affected to myceli-um growth.The efficacy of Cyathus sp. to control tomato wilt disease caused by F. oxysporum f.sp. lycopersici in greenhouse condition was done. At twenty-eight day after inoculation, KKU1 could reduce disease incident than KKU2. Cyathus sp. KKU1 and KKU2 were enhance growth in tomato that affected to increasing tomato dry weight and high.