TY - JOUR
T1 - Greenhouse gas emissions from agricultural soil amended with kitchen compost of varying ages
AU - Chau, Tran Thi Minh
AU - Someya, Takashi
AU - Akao, Satoshi
AU - Nakamura, Masato
AU - Oritate, Fumiko
AU - Somura, Hiroaki
AU - Yamane, Shinzo
AU - Maeda, Morihiro
N1 - Funding Information:
We would like to thank Toshiaki Fukuda of the NPO Imari Hachigame Plan, Saga for providing compost, and the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) for providing a scholarship to the first author.
Publisher Copyright:
© 2023 Japanese Society of Soil Science and Plant Nutrition.
PY - 2023
Y1 - 2023
N2 - Although the use of kitchen waste compost is very common, GHG emissions from soil amended with kitchen waste compost have not been studied. This study aimed to determine the effects of kitchen compost age and application rates on GHG emissions to identify optimal compost management. Soil samples mixed with kitchen waste compost at three different ages: 1 month (1M), 2 months (2M), and 3 months (3M) at two application rates (1% and 2% w/w) were incubated at 25°C for 28 days under aerobic conditions. Emissions of nitrous oxide (N2O), carbon dioxide (CO2), and methane (CH4) were determined on days 3, 7, 14, 21, and 28. Results showed that N2O and CO2 emissions decreased with compost age (p < 0.05). Increased application rates of compost led to increased CO2 emissions and suppression of N2O emissions. Furthermore, CH4 was emitted from soil amended with kitchen compost even under aerobic conditions. This study suggests that 3M kitchen waste compost is optimal in terms of GHG emissions upon application to soil under aerobic conditions.
AB - Although the use of kitchen waste compost is very common, GHG emissions from soil amended with kitchen waste compost have not been studied. This study aimed to determine the effects of kitchen compost age and application rates on GHG emissions to identify optimal compost management. Soil samples mixed with kitchen waste compost at three different ages: 1 month (1M), 2 months (2M), and 3 months (3M) at two application rates (1% and 2% w/w) were incubated at 25°C for 28 days under aerobic conditions. Emissions of nitrous oxide (N2O), carbon dioxide (CO2), and methane (CH4) were determined on days 3, 7, 14, 21, and 28. Results showed that N2O and CO2 emissions decreased with compost age (p < 0.05). Increased application rates of compost led to increased CO2 emissions and suppression of N2O emissions. Furthermore, CH4 was emitted from soil amended with kitchen compost even under aerobic conditions. This study suggests that 3M kitchen waste compost is optimal in terms of GHG emissions upon application to soil under aerobic conditions.
KW - Aerobic conditions
KW - greenhouse gas emissions
KW - kitchen waste compost
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U2 - 10.1080/00380768.2022.2160622
DO - 10.1080/00380768.2022.2160622
M3 - Article
AN - SCOPUS:85146217285
SN - 0038-0768
JO - Soil Science and Plant Nutrition
JF - Soil Science and Plant Nutrition
ER -