Biological control of tomato damping-off disease caused by rhizoctonia solani kuhn

الملخص EN

Tomato Damping-off disease caused by Rhizoctonia solani is considered as one of the most destructive diseases in Egypt.

Effect of some biological control agents such as Trichoderma viride, arbuscular mycorrhiza (AM) and Bacillus subtilis, at seven different mixed treatments, was tested for their ability to control in tomato plants against the disease.

According to varietal responses test, all the tested isolates of R.

solani showed Damping-off symptoms on six tested cultivars; however, they considerably varied in percentages of pre-emergency and post-emergency symptoms.

Freda was more susceptible than Alesa cultivar, which was relatively resistant.

The combination of AM, with T.

viride, and B.

subtilis was the most effective in decrease the infection rate of the tested biological control, compared with the other treatments.