Cow pea crop is highly prone to a wide range of pests and diseases, which can cause damage to the crop at all the growth stages. Among the parasitic diseases, viral disease rank first and result in huge grain loss. Among different viral diseases cow pea mosaic disease transmitted by Aphis craccivora Koch is one of the important disease. Management of cow pea mosaic disease so far been undertaken by means of chemical pesticides, irradication of diseased plants and removal of weed host etc. But due to overwhelming evidence of pesticidal risk to humans and other forms of life brings the...