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http://dx.doi.org/10.12791/KSBEC.2021.30.2.095

Greenhouse Gases in Compound Fertilizer and Livestock Manure Compost for Crops Cultivation  

Choi, Man Kwon (Protected Horticulture Research Institute, NIHHS, RDA)
Yun, Sung Wook (Department of Agricultural Engineering, National Institute of Agricultural Sciences, RDA)
Yoon, Yong Cheol (Department of Agricultural Engineering, Gyeongsang National University (Institute of Smart Farm, GNU))
Publication Information
Journal of Bio-Environment Control / v.30, no.2, 2021 , pp. 95-100 More about this Journal
Abstract
An experiment was conducted for this survey to approximate the amounts of CO2 and CH4 contained in composite fertilizers and livestock manure compost produced and commercialized for crop cultivation in South Korea. The results are summarized as follows. The average CO2 concentration in one sack of a composite fertilizer was estimated at approximately 1,733.3 ppm, regardless of the date of measurement. Approximately 0.067 kg of the fertilizer was contained per sack, and the unit weight of the fertilizer was approximately 3.35×10-3 kg·kg-1. An average of 885,750 t·yr-1 of the composite fertilizer was shipped for agricultural use in South Korea. Approximately 2.9 million t·yr-1 of CO2 was estimated to be contained in the composite fertilizer itself based on this amount. In the case of CH4, it was no longer measured after 76.8 ppm (2.949×10-3 kg per sack, 0.15×10-3 kg·kg-1 per unit weight) was indicated in one sack on the start date of measurement. The measurement could not be accurate since the amount of CO2 contained in the compost exceeded 10,000 ppm, which is the maximum measurement range of the measuring instrument, regardless of the closure or opening of the hole or the measurement date. Therefore, the amount contained per sack was approximately 0.506 kg when it was examined by assuming that it is 10,000 ppm, which is the maximum. It was found that the concentration of CH4 varied depending on the closure and opening of the compost hole. Approximately 2.53 kg of CH4 was contained in one sack of the compost. It was estimated to be over 4.7 million t·yr-1 when this amount was compared to the average production of solid compost in South Korea. Approximately 8,040 ppm of CO2 was discharged from the red pepper cultivation package on average until the end of the measurement. In the case of bare soil, the concentration of CH4 gradually decreased over time, and it took approximately 50 days for it to reach almost zero from a maximum of 1,700 ppm.
Keywords
carbon dioxide; greenhouse; methan; pepper cultivation;
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