Vol. 11, Special Issue 1 (2022)

Author(s):
Tulika Singh, AD Patel, Anjana B Prajapati and BA Patel

Abstract:
The nematicidal effect of Purpureocillium lilacium, Pochonia chlamydosporia singly or in combination were tested against root-knot nematodes under open field conditions. In the present study, the efficacy of two biocontrol agents was tested against Meloidogyne spp. at different doses. The results revealed that all the treatments were significantly superior over check with respect to nematode population and yield. However seed treatment with P. lilacinum @ 5 ml/kg seeds followed by soil application of vermicompost @ 2.5 t/ha enriched with P. lilacinum @ 10 ml/kg proved effective to manage root-knot nematodes and hence increased okra yield. The experiment proved that application of different biocontrol agents (P. lilacinum and P. chlamydosporia) not only has a lethal effect on nematode, but also enhances the plant growth, supplying many nutritional elements and induce the systemic resistance in plants. Through this investigation we could standardize a strategy for the sustainable management of nematode in okra.