Effect of different moisture content on nitrous oxide production in aggregated soil of Shintoku, Japan
Agricultural soils are the major source of the potent greenhouse gas and ozone-depleting substance, N2O. An incubation study was carried out using the volcanic ash fine textured soil of Shintoku. Soil samples used in this study were taken from managed grassland at Shintoku Experimental Livestock Far...
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IJARIT Research Foundation
2024-12-01
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| Series: | International Journal of Agricultural Research, Innovation and Technology |
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| author | Farzana Diba Mariko Shimizu Ryusuke Hatano |
| author_facet | Farzana Diba Mariko Shimizu Ryusuke Hatano |
| author_sort | Farzana Diba |
| collection | DOAJ |
| description | Agricultural soils are the major source of the potent greenhouse gas and ozone-depleting substance, N2O. An incubation study was carried out using the volcanic ash fine textured soil of Shintoku. Soil samples used in this study were taken from managed grassland at Shintoku Experimental Livestock Farm of Hokkaido University in Southern Hokkaido, Japan (N43º05′, E142º51′). Soil aggregates were air-dried, and sieved with 4.5 mm and 2 mm and adjusted the soil moisture of 60% and 80% of field water capacity (FWC). Just after the moistening, the aggregates were incubated for 9 days under a temperature of 20°C. Just after starting the incubation, the flush of N2O production was observed. Similar flushes of carbon dioxide (CO2) and nitric oxide (NO) productions were also observed. All of the gas productions were higher in larger aggregates with 80% of field water capacity. The concentrations of Water Extractable Organic Carbon (WEOC), NH4+-N, pH and total N were significantly different before and after incubation. Shintoku soil showed a significant correlation between before and after incubation for all soil chemical properties except pH. Especially WEOC and NH4+-N changed immediately after the addition of water and this situation continued during the incubation. Larger aggregates showed higher amounts of NH4+-N and NO3-–N and were responsible for higher N2O production compared to smaller aggregates. In Shintoku the results of N2O-N/NO-N ratio in both moisture contents indicated nitrification as a main process of N2O production. It is very well known that N2O is produced more from the denitrification process than nitrification. Poor aeration and less diffusion of NO3-N and WEOC from the aerobic area to the anaerobic area reduce N2O production in the denitrification process of fine textured Shintoku soil. |
| format | Article |
| id | doaj-art-693142da4ed543aa9b0bf29ea7ef83dd |
| institution | Kabale University |
| issn | 2224-0616 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | IJARIT Research Foundation |
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| series | International Journal of Agricultural Research, Innovation and Technology |
| spelling | doaj-art-693142da4ed543aa9b0bf29ea7ef83dd2025-02-03T08:15:10ZengIJARIT Research FoundationInternational Journal of Agricultural Research, Innovation and Technology2224-06162024-12-0114299110https://doi.org/10.3329/ijarit.v14i2.79418Effect of different moisture content on nitrous oxide production in aggregated soil of Shintoku, JapanFarzana Diba0https://orcid.org/0009-0007-4051-2261Mariko Shimizu1Ryusuke Hatano2https://orcid.org/0000-0002-2261-1799Deputy Director, Committee for Advanced Studies and Research, Bangladesh Agricultural University, Mymensingh, BangladeshLaboratory of Soil Science, Division of Environmental Resources, Graduate School of Agriculture, Hokkaido University, Sapporo, JapanEmeritus Professor, Laboratory of Soil Science, Division of Environmental Resources, Graduate School of Agriculture, Hokkaido University, Sapporo, JapanAgricultural soils are the major source of the potent greenhouse gas and ozone-depleting substance, N2O. An incubation study was carried out using the volcanic ash fine textured soil of Shintoku. Soil samples used in this study were taken from managed grassland at Shintoku Experimental Livestock Farm of Hokkaido University in Southern Hokkaido, Japan (N43º05′, E142º51′). Soil aggregates were air-dried, and sieved with 4.5 mm and 2 mm and adjusted the soil moisture of 60% and 80% of field water capacity (FWC). Just after the moistening, the aggregates were incubated for 9 days under a temperature of 20°C. Just after starting the incubation, the flush of N2O production was observed. Similar flushes of carbon dioxide (CO2) and nitric oxide (NO) productions were also observed. All of the gas productions were higher in larger aggregates with 80% of field water capacity. The concentrations of Water Extractable Organic Carbon (WEOC), NH4+-N, pH and total N were significantly different before and after incubation. Shintoku soil showed a significant correlation between before and after incubation for all soil chemical properties except pH. Especially WEOC and NH4+-N changed immediately after the addition of water and this situation continued during the incubation. Larger aggregates showed higher amounts of NH4+-N and NO3-–N and were responsible for higher N2O production compared to smaller aggregates. In Shintoku the results of N2O-N/NO-N ratio in both moisture contents indicated nitrification as a main process of N2O production. It is very well known that N2O is produced more from the denitrification process than nitrification. Poor aeration and less diffusion of NO3-N and WEOC from the aerobic area to the anaerobic area reduce N2O production in the denitrification process of fine textured Shintoku soil.https://www.banglajol.info/index.php/IJARIT/article/view/79418/52054denitrificationnitrificationn2o productionsoil aggregate |
| spellingShingle | Farzana Diba Mariko Shimizu Ryusuke Hatano Effect of different moisture content on nitrous oxide production in aggregated soil of Shintoku, Japan International Journal of Agricultural Research, Innovation and Technology denitrification nitrification n2o production soil aggregate |
| title | Effect of different moisture content on nitrous oxide production in aggregated soil of Shintoku, Japan |
| title_full | Effect of different moisture content on nitrous oxide production in aggregated soil of Shintoku, Japan |
| title_fullStr | Effect of different moisture content on nitrous oxide production in aggregated soil of Shintoku, Japan |
| title_full_unstemmed | Effect of different moisture content on nitrous oxide production in aggregated soil of Shintoku, Japan |
| title_short | Effect of different moisture content on nitrous oxide production in aggregated soil of Shintoku, Japan |
| title_sort | effect of different moisture content on nitrous oxide production in aggregated soil of shintoku japan |
| topic | denitrification nitrification n2o production soil aggregate |
| url | https://www.banglajol.info/index.php/IJARIT/article/view/79418/52054 |
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