Antagonistic effect of ceramic industry soil streptomycesagainst plant pathogens

The various diseases that occur during the growth of plants usually cause a significant reduction in production and quality of agricultural products. Actinomycetes, especially Streptomyces spp., become a valuablebiological control resource due to their preponderant abilities to produce various secondary metabolites with novel structure and remarkable biological activity. The potassium solubilizing actinomycetes isolated from the ceramic soil industries were carried out anantagonistic effect against various soil borne phytopathogenic fungiand bacteria. Synthetic bactericides and fungicides have been causing harm to humans, animals, and the environment, as well as generating resistance in phytopathogenic organisms. Actinomycetes produce secondary metabolites with antifungal properties. Approximately 80% of antibiotics, such as streptomycin, spectinomycin, tetracycline and erythromycin, etc., are produced by actinomycetes. Organic acids produced by most of the actinomycetes inhibit the growth of phytopathogenic organisms and promote plant growth and induce systemic resistance in plants. Therefore, the objective of this study is to compare the antagonistic effect of actinomycetes isolated from different ceramic soil Industries and their application in agriculture. Although actinomycetes have equal or greater potential as biocontrol agents against phytopathogenic microbes.