Sciences & technologie. C, Biotechnologies
Volume 0, Numéro 31, Pages 34-38
2010-06-30

Formulation Of Streptomyces Antagonist With Inert And Organic Charges Against Mycosphaerella Foot Rot And Blight



Authors : Bencheikh M . Benali S .

Abstract

Peas is highly susceptible to preemergence damping off, caused by Mycosphaerella pinodes in western Algerian regions. Rhizosphere actinomycetes which were antagonistic this pathogen was isolated from chellif soils. An isolate of Streptomyces (St7c5) provided superior seed protection. Increased in both the germination and plant growth were recorded following treatment of seeds with Streptomyces formulated with inert or organic charge when compared to control. Application of the antagonist agent resulted in a significant reduction of Mycosphaerella foot rot to 5% compared to untreated seeds (30.5%). Application of Streptomyces resulted in a significant reduction of blight symptoms when compared to the control or when treated with talc alone. Hence, the talc formulation of Streptomyces agent can be recommended as one of the crop strategies for the management of foot rotting and blight caused by Mycosphaerella pinodes.

Keywords

Talc formulation, Streptomyces, Antagonism, Mycosphaerella pinodes, Foot rot, Ascochyta blight.

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