Effect of different media, temperature, pH and illumination on the growth of Fusarium oxysporum f. sp. zingiberi causing wet rot of ginger

Laboratory studies were conducted to study the effect of different culture, media, pH and temperature levels on mycelia growth of Fusarium oxysporum f. sp. zingiberi. The fungus grew the best on Potato dextrose agar followed by Richards's agar among ten different culture media were tested. Growth of F. oxysporum was maximum at 25 °C (90.00 mm) after seven days of inoculation, which was reduced drastically below 15 °C and above 40 °C. The most suitable pH level for growth of fungus was 7 followed by 6.5 with 86.17 mm and 84.83 mm mycelia growth respectively. The growth of F. oxysporum f. sp zingiberi is maximum under continuous light compared with other alternate light and dark condition.