A herbal formulation to prevent, control and treatment of the nematode disease and a process for the preparation are disclosed. The process comprises heating 10-40 % by volume neem oil on a water bath. The hot neem oil is mixed with 30-60 % by volume castor oil and the mixture of neem oil and castor oil is heated again. 20-50 % by volume karanj oil is added to the mixture so obtained and the mixture is heated again at 35 - 45 ° C for 6 - 14 minutes. The mixture so obtained is cooled and 5 - 15 % by volume Hing extract is added therein. 65 - 55% by volume cold mixture is taken and 35 - 45 % by volume distilled water is added into it and then 3 - 7 % by weight alkali is dissolved in the mixture. The mixture is emulsified by using a hand mixture to obtain ready to use herbal formulation.
