This research was aimed at studying the effects of Tagetes patula and T. erecta on root gali disease of tomato caused by Meloidogyne incognita and also to verify whether or not the root exudates of Jmpatients balsamina could promot the growth of the nematode population. The research was conducted in Glasshouse and Nematological Laboratory of the Department of Plant Pests and Diseases, Faculty o…