Biological Control Agents in the Management of Different Initial Population Densities of Meloidogyne javanica in Tomato

The efficacy of single and combined application Trichoderma harzianum Pseudomonas fluorescens (CHA0) in the controlling Meloidogyne javanica on tomato plants was evaluated under green house conditions. Seeds susceptible cv. Early-Urbana were sown clean plastic pots containing 1.5 kg steam sterilized soil. Four weeks after planting, soil each pot infested with a suspension 20 ml/kg T. (10 6 spores/ ml) 15 P. 8 CFU/ ml). Soil other two tested bio-agents together as application. Seven days later, all pots, except controls, inoculated M. at initial population densities 1, 2 or 4 eggs/ cm 3 Sixty nematode inoculation, parameters plant growth reproduction determined. Results showed that factor (Rf) infected decreased by 58, 63 31% , 11, 33 12% 43, 55 49% bio-agents, respectively. Combined found to be most effective higher density (4 ).