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Abstract ▼ AI-Helper

To determine the accurate C/N ratio of compost, biodegradable carbon and nitrogen in compost must be analyzed. In biodegradable nitrogen analyzed by Kjeldahl Method, nitrate and nitrite which are available for microbes can not be detected at all. By means of $F{\"{o}}rster...

To determine the accurate C/N ratio of compost, biodegradable carbon and nitrogen in compost must be analyzed. In biodegradable nitrogen analyzed by Kjeldahl Method, nitrate and nitrite which are available for microbes can not be detected at all. By means of $F{\"{o}}rster$ Method, nitrate and nitrite can be detected. Therefore, various nitrogens in compost were analyzed by Kjeldahl and $F{\"{o}}rster$ Method to investigate the seasonal changes of various C/N ratios of compost. C/N ratios in compost analyzed by Kjeldahl and $F{\"{o}}rster$ Method were decreased rapidly within 2 weeks after composting, then were not changed to 6 weeks, and thereafter were decreased slowly with the lapse of composting time. C/N ratios analyzed by Kjeldahl Method were higher than those analyzed by $F{\"{o}}rster$ Method. C/N ratios of total carbon/total nitrogen analyzed by Kjeldahl Method were higher(5 as C/N ratio or 36%) than those of biodegradable carbon/biodegradable nitrogen analyzed by $F{\"{o}}rster$ Method. Highly positive correlations were observed among C/N ratios of total carbon/total nitrogen analyzed by Kjeldahl Method total carbon/total nitrogen analyzed by $F{\"{o}}rster$ Method and biodegradable carbon/biodegradable nitrogen analyzed by $F{\"{o}}rster$ Method one another.