INTERNATIONAL JOURNAL OF AGRICULTURAL TECHNOLOGY

Volume 14, No. 06, Month NOVEMBER, Year 2018, Pages 923 - 932

Application of nano-particles derived from chaetomium elatum che01 to control pyricularia oryzae causing rice blast

Song, J. J., Kanokmedhakul, S., Kanokmedhalkul, K. and Soytong, K.

Abstract Download PDF

Pyricularia oryzae causing rice blast was isolated and proved for pathogenicity. Chaetomium elatum ChE01 was proved to be antagonized P. oryzae in bi-culture antagonistic test which averaged inhibition of 60.40 % within 15 days. Fungal metabolites from C. elatum ChE01 were extracted and tested to inhibit P. oryzae. Results showed that crude ethyl acetate expressed antifungal activity against P. oryzae which the effective dose50 (ED50) was 231 ppm., followed by crude methanol and crude hexane which the ED50 were 460 and 2,122 ppm. respectively. It was shown that nano-CCE gave the highest inhibition P. oryzae which the ED50 was 8.25 ppm, and followed by nano-CEM and nano-CEH which the ED50 values were 11.21 and 65.52 ppm, respectively. Further research findings are investigated in pot and field experiments.

Keywords

Nano-particles, Chaetomium, Rice Blast

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