Effect of temperature on the behaviour of Geotrichum candidum and Fusarium oxysporum in culture media based on some domestic wastes

Abstract

The effect of temperature on the gap observed between

 

Fusarium oxysporum and Geotrichum candidum was investigated when the organisms were grown on media based on some domestic food wastes. The organisms were isolated from soil. The wastes were chipped, dried in the sun and in the oven (at 110oC) and comminuted to powder form. The powder in each case was included in the medium at the rate of 20%. The organisms were plated diametrically in 9cm Petri dishes and incubated at 15°, 20°, 25°, 30° and 40°C for 15 days. Growth towards the centre was measured. On the 15th day the gap between the organisms was measured. G. candidum grew better on all the media, except on cassava peel, where F. oxysporum grew better than G. candidum at all temperatures; the gap was widest on cocoyam peel and was smallest on cassava peel. The gap was affected by temperature and medium.