In vitro evaluation of fungicides against Cylindrocladium spp. causing diseases of Eucalyptus in Kerala, India1

摘要

AbstractA total of 22 fungicides were evaluatedin vitrofor their efficacy againstCylindrocladium quinqueseptatum(CQ),C. ilicicola(CI),C. floridanum(CF),C. parvum(CP), andC. camelliae(CC) causing various diseases ofEucalyptusin Kerala, India. Though there were a number of fungicides effective (ED100) in the comdial germination and poisoned food techniques, only carbendazim provided complete inhibition of CQ, CI and CC in the soil‐fungicide screening technique; carbendazim was also highly effective against CF and CP.C. ilicicolaappeared to be more tolerant than other species ofCylindrocladiumas only a few fungicides were found to be effective against it even in the conidial germination technique. On comparison of the three fungicidal evaluation techniques, it is concluded that, for a pathogen producing microsclerotia, likeCylindrocladium, the soil‐fungicide screening technique is the most appropriate one for obtaining reliable resu