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  • Title: Solid-state fermentation of agro-industrial wastes to produce bioorganic fertilizer for the biocontrol of Fusarium wilt of cucumber in continuously cropped soil.
    Author: Chen L, Yang X, Raza W, Luo J, Zhang F, Shen Q.
    Journal: Bioresour Technol; 2011 Feb; 102(4):3900-10. PubMed ID: 21190841.
    Abstract:
    Agro-industrial wastes of cattle dung, vinegar-production residue and rice straw were solid-state fermented by inoculation with Trichoderma harzianum SQR-T037 (SQR-T037) for production of bioorganic fertilizers containing SQR-T037 and 6-pentyl-α-pyrone (6PAP) to control Fusarium wilt of cucumber in a continuously cropped soil. Fermentation days, temperature, inoculum and vinegar-production residue demonstrated significant effects on the SQR-T037 biomass and the yield of 6PAP, based on fractional factorial design. Three optimum conditions for producing the maximum SQR-T037 biomass and 6PAP yield were predicted by central composite design and validated. Bioorganic fertilizer containing 8.46 log(10) ITS copies g(-1) dry weight of SQR-T037 and 1291.73 mg kg(-1) dry weight of 6PAP, and having the highest (p<0.05) biocontrol efficacy, was achieved at 36.7 fermentation days, 25.9°C temperature, 7.6% inoculum content, 41.0% vinegar-production residue, 20.0% rice straw and 39.0% cattle dung. This is a way to offer a high value-added use for agro-industrial wastes.
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