Abstract
Carbon dioxide evolution is a good indicator to measure the rate of organic matter decomposition and helps to determine the nutrient release pattern and optimum time for organic material application. In the present study, mineralization rates of N-enriched compost and un-composted fruit and vegetable waste along with same amount of N as in enriched compost were determined by analysis of carbon dioxide evolution under controlled laboratory conditions. Cumulative CO2 evolved from different treatments was also calculated. Mineralization rate study revealed that CO2 release from N-enriched compost-amended soils was much slower than that recorded in case of both raw organic waste and raw organic waste plus urea-amended soil under controlled laboratory conditions. The soil amended with raw (un-composted) organic waste showed more cumulative CO2 evolution than that recorded in case of raw organic waste plus urea and urea-enriched composted organic waste amended soil. Results of the study imply that the composted organic wastes had more stability over un-composted organic waste which may be helpful towards sustainable agriculture and environment.
R. Ahmad1, M. Arshad2 ,, M. Naveed2 , , Z.A. Zahir2 , , T. Sultan1 , M. Khalid2. (2007) Carbon mineralization rate of composted and raw organic wastes and its implications on environment , The Journal Soil & Environment , Volume 26, Issue 1.
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