author(s)
Muhammad Subtain Raza, Muhammad Imran, Muhammad Afzal and Hafeez ur Rehman

abstract
Root knot nematode is most destructive plant pathogen. It contributes considerable losses in the yield of crop plant. The evaluation of bio products at 5% concentration (Vampire Axiom and Fline) for their effectiveness on the development and invasion of root knot nematode was studied. Seedlings of tomato were dipped in Vampire, Axiom and Fline @ 5% concentration for 1 hour. Treated seedling with effective concentration of bio products were transplanted into pots. After one week of transplanting these plants were inoculated with @500 J2/ pot. This experiment was conducted in two sets. One set was harvested after 7, 14, 21, 35 days and other was harvested after 60 days. Fline gave less no. of Root kont nematodes J2 population per root system 711 C as compared to control 2316. Almost all the treated plant showed good growth as compared to the control.