Impact of Vermicompost on Nematode Population at Different Moisture Levels

Influence of vermicompost at different dosage and moisture levels on nematode populations was studied using plastic trays (10x10x4 cm) which accommodated 150 g nematode infested soil. With the increasing dose of vermicompost there was reduction in plant parasitic nematode population at all the observed days (15, 30, 40, 60 and 75). One kg vermicompost/m² was found to be the most effective. At submerge condition, there was maximum mortality of PPN followed by field capacity (F.C.) and 50% field capacity. Nematode mortality was maximum at 75 days after vermicompost application followed by 60, 45, 30 and 15 days in submerged condition. The population of free-living nematodes was significantlly increased in 0.250 kg V.C/m² and treated control at 15 and 30 days after V.C apllication. Field capacity recorded maximum free living nematode population at all days of observation after V.C application.