Journal of Biological Control

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Five native nematophagous fungi viz., Penicillium sp., Aspergillus sp., Paecilomyces lilacinus (Thompson), Verticillium suchlasporium var. suchlasporium, (Gams and Dackman) and Exophiala pisciphila (McGinnis and Ajello) were found to parasitize the eggs of Globodera spp. and their frequency of occurrence varied from 0.47 to 24.17 per cent. Natural suppression of the cyst nematodes by P. lilacinus to an extent of 79.6 per cent was observed. However, this did not reflect any significant increase in potato yield because the nematode population remained high (>39 cysts/100 ml soil) inspite of suppression by the fungus. Paecilomyces liiacinus, V. suchlasporium var. suchlasporium and E. pisciphila are reported for the first time on the potato cyst nematode in India.

Keywords

Globodera spp., Nematophagous Fungi, Natural Suppression.
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