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| The Study on Composting Utilization of Cassava Bark and Chicken Manure |
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| KeyWord:composting; maturity; physical chemical parameters; cellulase activity; cassava bark |
| Author Name | Affiliation | | HOU Xian-wen | Chinese Academy of Tropical Agriculture Sciences, Environment and Plant Protection Research Institute, Haikou 571101, China | | LI Qin-fen | Chinese Academy of Tropical Agriculture Sciences, Environment and Plant Protection Research Institute, Haikou 571101, China | | CHEN Xuan | Chinese Academy of Tropical Agriculture Sciences, Environment and Plant Protection Research Institute, Haikou 571101, China | | LI Guang-yi | Chinese Academy of Tropical Agriculture Sciences, Environment and Plant Protection Research Institute, Haikou 571101, China | | ZOU Yu-kun | Chinese Academy of Tropical Agriculture Sciences, Environment and Plant Protection Research Institute, Haikou 571101, China |
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| Abstract: |
| The cassava bark contains a lot of cellulose and other refractory material as well as high carbon nitrogen ratio, which is difficult to be used directly. A composting system using cassava bark and chicken manure was conducted to probe transforming characteristics during composting process. The results evidenced that the temperature showed the trend of “increase-decrease” among four composts, drew close to the initial temperature at the later period. Moisture content was no significant difference during the time course. The final pH value of each processing was 7.3~7.5 by the end of fermentation. The content of water-soluble carbon（WSC） decreased with composting, reflecting the maturation process during cassava bark composting. And water-soluble nitrogen（WSN） content was strongly influenced by ventilation conditions and nitrogen source conditions. The cellulase activity increased in the early stage and decreased gradually in the later stage. Since many factors impacting the compost maturity, it should be evaluated by various parameters including biological, chemical and physical parameters. |
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