Efficacy of certain botanicals for the management of phytonematodes infecting tomato and chilli

Leaf extracts of two plants such as Murraya koenigii L. Spreng and Vitex negundo L. were used as bare-root dip treatment for the management of phytonematode, Rotylenchulus reniformis infecting tomato (Lycopersicon esculentum) and chilli (Capsicum annum) plants. Significant reduction was observed in the nematodes multiplication of R. reniformis on the experimental plants. Leaf extracts of Murraya koenigii caused relatively higher inhibition in nematode multiplication than that of Vitex negundo. Improvement in plant growth was noted, that seems to be due to dip treatment and with the consequence of nematode management. The efficacy of root-dip treatment with respect to improvement in plant weight and reduction in disease incidence increased with the increase in concentration of leaf extracts and dip duration.