Abstract
Trichoderma harzianum has been found to be a competitor and mycoparasite ofFusarium verticillioides which causes foot rot disease on rice. The experiment was undertaken macroscopically and microscopically. In total 6 treatments were performed combining three water activities (0.95, 0.98, 0.995) and two temperatures (15 and 25 °C). At all conditions tested, except at 0.95a w and 15 °C.Trichoderma harzianum acted as biocontrol agent trough two synergistic mechanisms — competition and mycoparasitism — overF. verticillioides. At 0.95a w and 15 °C mutual antagonism by contact was observed. The effect of abiotic factors water activity and temperature on fungal growth was determined.
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