Growth and sporulation studies of Colletotrichum dematium var. truncatum were conducted using different media, temperatures and light regimes. Of the seven media employed oat meal agar supported the best mycelial growth, with sporulation best on Czapek Dox agar and potatodex tro se agar. Greater mycelial growth was o btained under 12 hours alternating ultraviolet light and continuous light than in darkness. Sporulation was highest under 12 hours alternating light treatment. The o p tim um temperature fo r growth and sporulation was 2 5 °C while germination was o p tim um at 20°C. Pathogenicity studies in the glasshouse showed that seedlings o f cultivar 66D-16 were most susceptible while cultivar 66F-4A most resistant. Inoculation studies on d etached green pods indicated that 66D-16 was m o st susceptible and Palmetto most resistant. A n in vitro efficacytes to five fungicides against the fu n g u s showed that Topsin M was the most toxic with an ED50 o f 2.2 pig/ml.