Abstract

Three techniques were used to evaluate the in vitro efficacy of 22 fungicides against Cylindrocladium quinqueseptatum [Calonectria quinqueseptata] (CQ) Cylindrocladium [Calonectria] ilicicola (CI), Cylindrocladium floridanum (CF), C. parvum (CP) and C. camelliae (CC) . Although several fungicides were 100 effective against several species in the conidial germination and poisoned food tests, only carbendazim gave complete inhibition of CQ, CI and CC in the soil-fungicide screening test, as well as being highly effective against CF and CP. Few fungicides were effective against CI, even in the conidial germination test. Results suggest that the soil-fungicide screening test is the most appropriate technique for testing the efficacy of fungicides against fungi producing microsclerotia