In vitro investigation of the efficacy of several fingicides and trichodermin against fusarium wilt of the melon (Fusarium oxysporum F. SP. Melonis)
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Author: Dimitrov, Krasimir; Georgiev, Georgi
The efficacy of several popular fungicides Alto 100CL, Sportak 450 EK, Kapthan 50 VP, TMTD, Dithan M45, Ronilan FL, Sumi 812 5VP, Topsin M 70VP, Fundazol 50 VP, Shampion and the bio preparation trichodermin, used in standard concentrations, has been tested under laboratory conditions against Fusarium oxisporum f. sp. melonis, cultivated on artificial media /potato-decstrous agar/. The method of Tornborry and Waterhouse has been used. It was found that six of the tested fungicides - Alto 100 SL, Sportak 450 EK, Kapthan 50 VP, TMTD and Topsin M 70 VP completely suppress the growth of the mycelium. Less effective were Ronilan FL and Fundasol 50 VP completely suppress the growth of the mycelium. Less effective were Ronilan FL and Fundazol 50 VP suppressed the development of the pathogen by 50%. The formulations of Trichodermin, Dithan m45, Sumi 812 5 VP and Champion restrict the development of the fungus by 73 - 90 %. The results from this investigation have practical value for the correct choosing of effective fungicides for control of Fusarium oxysporum f. sp. meloni.