Efficiency of Crude Extracts from Chaetomium globosum to Inhibit Bipolaris maydis Caused of Maize Leaf Blight Disease in Corn
Keywords:
crude extracts, dual culture test, percent inhibition of radial growth, leaf blight diseaseAbstract
Bipolaris is a pathogenic fungus causes of maize leaf blight disease in corn which reduce the photosynthesis and production of corn in Thailand. The use of biological methods to control plant diseases, especially the use of Chaetomium globosum, has the potential to control various pathogenic fungi. This research was to study the efficiency of C. globosum inhibitory activity against B. maydis and the crude extract of C. globosum inhibitory activity against B. maydis under laboratory and greenhouse conditions. The first method was tested the efficiency of crude extract from C. globosum for inhibiting B. maydis under laboratory condition using dual culture test. The result showed that inhibition percentage of radial growth was 51.16%. In addition, fungal antagonist was extracted by solvent extraction method using methanol and ethyl acetate and tested for growth inhibition of B. maydis under laboratory and greenhouse conditions. Fungal crude extracts showed growth inhibitory activity against B. maydis causing maize leaf blight disease in corn at a concentration of 7,000, 3,500 and 1,750 micrograms per milliliter.
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