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Root knot nematodes (Meloidogyne specie) are major threat for vegetable crop production in Pakistan. The experiments of inducers (Salicylic Acid, Jasmonic Acid and Benzoic Acid) as seedling dip treatment was designed and Systemic Acquired Resistance (SAR) developed in Money maker Variety of tomato and the efficiency of most effective concentration of inducers on the invasion and development of root knot nematode was determined. First experiment was on the effect of inducers (Salicylic Acid, Jasmonic Acid and Benzoic Acid) on nematode reproduction and their influence as induction of (SAR) on plant growth and development of root knot nematodes on host plant under controlled conditions. Second experiment on development of Juvenile2 (J2) in roots of Money maker Variety of tomato growing in the presence of inducers was run under natural conditions. At harvest of field; data of population of J2 penetration and development, final J2 population in roots and soil, galling index, number of females/ 1gm of soil, root galling and egg masses was assessed on 0-5 scale. Salicylic Acid and Jasmonic Acid @ 7mg/mL and 10mg/mL showed significant control of root knot nematodes as compared to Benzoic Acid. Most effective inducers were selected to investigate its role for the management of root knot nematodes associated with tomato. It is concluded that comparison of treatment means regarding to Analysis of Variance (ANOVA) indicated that Jasmonic Acid @ 10mg/mL showed more significant results for reduction of root knot nematodes in both experiments.

Effects of inducers of systemic acquired resistance on reproduction of root knot nematodes in tomato