Soytong, Kasem

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Soytong, Kasem
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Soytong, K.
Email
kasem.so@kmitl.ac.th

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    Item type:Publication,
    Nano-particles derived from Chaetomium elatum against Phytophthora rot of durian
    (2018-12-01)
    Thongkham, D.
    ;
    Soytong, K.
    ;
    Kanokmedhakul, S.
    ;
    Kanokmedhakul, K.
    Durian are the economically fruit trees in Thailand. The important problem of durian is root rot disease caused by Phytophthora palmivora. This study was used Chaetomium elatum to control the P. palmivora causing root rot disease of durian by dual culture method, crude extract test and nano particles test derived from Ch. elatum. Dual-culture test showed that Ch. elatum gave efficiency to inhibit of spore and colony growth of P. palmivora which were 46.13 and 38.89%, respectively. Testing efficacy of crude extract from Ch. elatum to control P. palmivora found that crude ethyl acetate from Ch. elatum gave significantly highest against pathogen of P. palmivora at the concentration of 1000 ppm which the ED <inf>50</inf> of 175.31 ppm. Nano particles testing, nano particles of crude hexane, ethyl acetate and methanol from Ch. elatum showed the ED <inf>50</inf> values of 3.49, 3.47 and 3.41 ppm.
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    Nano-particles from Chaetomium brasiliense to control Phytophthora palmivora caused root rot disease in durian var Montong
    (2018-12-01)
    Tongon, R.
    ;
    Soytong, K.
    ;
    Kanokmedhakul, S.
    ;
    Kanokmedhakul, K.
    The antagonistic fungus, Chaetomium brasiliense was tested to control Phytophthora palmivora causing rot disease of Durian (Durio zibithenus L.) var Montong by crude extracts and Nano-particles derived from Ch. brasiliense. Crude extracts of antagonistic fungus was tested for antifungal biological activities. The crude extracts from antagonistic fungus with hexane, ethyl acetate and methanol were tested against P. palmivora. Crude ethyl acetate from Ch. brasiliense gave significantly against P. palmivora which the ED <inf>50</inf> values was 17.46 µg/ml. Testing Nano-particles were tested for antifungal activities. The results showed nano - particles from Ch. brasiliense gave effectively significantly inhibition of colony growth and spore production which the ED <inf>50</inf> values were 1.08 µg/ml, and 8.68 µg/ml respectively. Application of Nano - particles to control the P. palmivora causing root rot disease of durian in pot experiment was successfully done. The results showed nano-particles from Ch. brasiliense reduced the root rot disease on durain of 40%. The nano-particles from Ch. brasilense gave significiantly high plant growth which were 79.5 cm when compared to the non-trated control.