Abstract
The survival of Meloidogyne incognita second stage juveniles (J2) and free living nematodes (F1) in soil infested with the nematophagous fungi Arthrobotrvs dactvloides (constricting rings) and Dactylella haptotvla (sticky knobs) was evaluated under various conditions. The system for testing survival consisted of 109 of an Andosol soil in 4.5cm diam petri dishes infested with a standard inoculum of 0.05g wet weight fungi/10 g soil. Nematodes were added in a 0. 5ml suspension of water. J2 survival was 8% of control when D. haptotvla was added to soil 2 days prior to adding nematodes but it was 85% in A. dactvloides infested soil under the same conditions. J2 numbers declined rapidly in D. haptotvla infested soil with 10% survival after 24 hours whereas J2 survival in A. dactvloides soil was 50% after 6 days. F1 nematode survival was affected in a similar way by both fungi. Steam sterilization did not appear to affect the trapping of J2 or F1 by either fungi under these experimental conditions.
