Three actinomycetes isolates were isolated from empty fruit bunch (EFB) compost of oil palm. They were
identified as Nocardiopsis sp. (ac9), Streptomyces violaceorubidus (6ca11) and Streptomyces sp. (ac19). The
enzymatic potential of the three isolates were established from assays on hydrolytic and lignolytic
activities. The production of amylases, cellulases and xylanases were higher in isolates Nocardiopsis sp.
(ac9) and S. violaceorubidus (6ca11), at both mesophilic (4072 1C) and thermophilic (6072 1C)
temperatures. On the contrary, lignolytic activities were higher at mesophilic temperature. Streptomyces
sp. (ac19) showed higher lignolytic activities at both temperatures compared to the other two isolates.
These three isolates were also antagonistic towards the pathogenic Ganoderma boninense. Nocardiopsis
sp. (ac9) was superior with 91.4% inhibition. From this study, it is established that indigenous
actinomycetes isolates have both enzymatic and antagonistic potential for use in composting and
Ganoderma control, respectively. We recommend the application of actinomycetes into the compost
heap during mesophilic stages to allow progressive composting and for compost to be enriched with
actinomycetes.
Three actinomycetes isolates were isolated from empty fruit bunch (EFB) compost of oil palm. They wereidentified as Nocardiopsis sp. (ac9), Streptomyces violaceorubidus (6ca11) and Streptomyces sp. (ac19). Theenzymatic potential of the three isolates were established from assays on hydrolytic and lignolyticactivities. The production of amylases, cellulases and xylanases were higher in isolates Nocardiopsis sp.(ac9) and S. violaceorubidus (6ca11), at both mesophilic (4072 1C) and thermophilic (6072 1C)temperatures. On the contrary, lignolytic activities were higher at mesophilic temperature. Streptomycessp. (ac19) showed higher lignolytic activities at both temperatures compared to the other two isolates.These three isolates were also antagonistic towards the pathogenic Ganoderma boninense. Nocardiopsissp. (ac9) was superior with 91.4% inhibition. From this study, it is established that indigenousactinomycetes isolates have both enzymatic and antagonistic potential for use in composting andGanoderma control, respectively. We recommend the application of actinomycetes into the compostheap during mesophilic stages to allow progressive composting and for compost to be enriched withactinomycetes.
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