Chaetomium as a biocontrol agent against plant pathogens
1995
Kasem Soytong(King Mongkut's Institute of Technology Ladkrabang, Bangkok (Thailand). Faculty of Agricultural Technology. Dept. of Plant Pest Management)
Techniques for delivery of biocontrol agents have been employed. The specific effective strains of Chaetomium cupreum KMIT-N 4320 and KMIT 3003 and C. globosum KMIT-N O802 were separately formalated into 2-forms of bioproducts as biopellets and biopowder. It was found that these bioproducts could be significantly survival over 90 percent in 3-years which the moisture content of bioproducts were averaged as 7 percent. In the field trails, the pellets and powder forms of biocontrol agents were tested its effect in different environmental conditions in the Northeast, East and Central Parts and could be significantly reduced the tomato wilt caused by Fusarium oxysporum f. sp. lycopersici and basal stem rot of sweet corn which caused by Sclerotium rolfsii as effective as chemical fungicide (Pentachloronitrobenzene). It was found that Chaetomium treated-plants with any forms of bioproducts improved stands and yields over the Citrus (Phytophthora spp.) and anthracnose of Mango and Citrus (Colletotrichum gloeosporioides) were also significantly reduced disease prevalent lower than the economic damage in the fields by using the another specific strains of Chaetomium produced in the form of biopellets. This research project proved that the Chaetomium spp. in form of biopellet could be protected many plant diseases as a broad spectrum mycofungicide.
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