抄録
Solar heating of out-door field soil with plastic-film mulching produced significant raise of soil temperature. Maximum temperature in the mulched soil were 45.2-47.0C and 37.9-39.9C at the depth of 5 and 20cm, respectively. Fusarium oxysporum was not detected at all from the mulched soil at the depth of 5cm, and approximately 60% decrease of F. oxysporum population was noted from that at the depth of 10 to 15cm. Disease incidence in the mulched field was significantly reduced, especially in lightly infested soil and in more insolated summer. Effect of combined treatment of plastic-film mulching with application of calcium cyanamide on the disease incidence was almost similar to that of mulching only.
