Effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice
We investigated the effect of increased temperatures of water and soil, together with the incorporation of rice straw, on emissions of methane (CH4) and nitrous oxide (N2O), and the daily variation in CH4 emissions. Three temperature treatments (floodwater temperature), ambient, ambient +2°C and amb...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Wiley
2016
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| Online Access: | https://hdl.handle.net/10568/89876 |
| _version_ | 1855518273455521792 |
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| author | Gaihre, Yam Kanta Wassmann, Reiner Villegas Pangga, Gina Sanabria, Joaquin Aquino, Edna Santa Cruz, Pompe C. Paningbatan, E.P. |
| author_browse | Aquino, Edna Gaihre, Yam Kanta Paningbatan, E.P. Sanabria, Joaquin Santa Cruz, Pompe C. Villegas Pangga, Gina Wassmann, Reiner |
| author_facet | Gaihre, Yam Kanta Wassmann, Reiner Villegas Pangga, Gina Sanabria, Joaquin Aquino, Edna Santa Cruz, Pompe C. Paningbatan, E.P. |
| author_sort | Gaihre, Yam Kanta |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | We investigated the effect of increased temperatures of water and soil, together with the incorporation of rice straw, on emissions of methane (CH4) and nitrous oxide (N2O), and the daily variation in CH4 emissions. Three temperature treatments (floodwater temperature), ambient, ambient +2°C and ambient +4°C, and two amounts of rice straw (0 and 6 t ha−1) were arranged in a randomized complete block design with four replications. The emissions of CH4 and N2O and the soil's redox potential (Eh) were measured weekly for two crop cycles. Daily variation in CH4 emission rates was measured with and without rice straw incorporation in planted and unplanted soil (with no warming treatments) during four growth stages of the crop. Methane emissions increased by as much as 91% with increasing amounts of water and soil temperature (+2 and +4°C), up to 34–35°C. Increases in temperature (+2 and +4°C above ambient) above 34–35°C decreased emissions by 30–36%. A decrease in soil Eh to < −100 mV and in CH4 emissions was observed earlier in the pots containing rice straw than in those without straw. Methane emissions varied daily; they were larger from 11:00 to 14:00 hours, particularly in unplanted soil. They showed positive correlations with the temperatures of both soil and air. In contrast, N2O emissions were negligible throughout the growing season. The emissions of CH4 evidently depend on the background temperature range; in our experiment, CH4 emissions increased up to 34°C and then they decreased above that. |
| format | Journal Article |
| id | CGSpace89876 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace898762024-08-27T10:35:09Z Effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice Gaihre, Yam Kanta Wassmann, Reiner Villegas Pangga, Gina Sanabria, Joaquin Aquino, Edna Santa Cruz, Pompe C. Paningbatan, E.P. climate change agriculture food security We investigated the effect of increased temperatures of water and soil, together with the incorporation of rice straw, on emissions of methane (CH4) and nitrous oxide (N2O), and the daily variation in CH4 emissions. Three temperature treatments (floodwater temperature), ambient, ambient +2°C and ambient +4°C, and two amounts of rice straw (0 and 6 t ha−1) were arranged in a randomized complete block design with four replications. The emissions of CH4 and N2O and the soil's redox potential (Eh) were measured weekly for two crop cycles. Daily variation in CH4 emission rates was measured with and without rice straw incorporation in planted and unplanted soil (with no warming treatments) during four growth stages of the crop. Methane emissions increased by as much as 91% with increasing amounts of water and soil temperature (+2 and +4°C), up to 34–35°C. Increases in temperature (+2 and +4°C above ambient) above 34–35°C decreased emissions by 30–36%. A decrease in soil Eh to < −100 mV and in CH4 emissions was observed earlier in the pots containing rice straw than in those without straw. Methane emissions varied daily; they were larger from 11:00 to 14:00 hours, particularly in unplanted soil. They showed positive correlations with the temperatures of both soil and air. In contrast, N2O emissions were negligible throughout the growing season. The emissions of CH4 evidently depend on the background temperature range; in our experiment, CH4 emissions increased up to 34°C and then they decreased above that. 2016-11 2017-12-31T15:46:00Z 2017-12-31T15:46:00Z Journal Article https://hdl.handle.net/10568/89876 en Limited Access Wiley Gaihre YK, Wassmann R, Villegas-Pangga G, Sanabria J, Aquino E, Sta. Cruz PC, Paningbatan Jr. EP. 2016. Effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice. European Jurnal of Soil Science 67(6):868-880. |
| spellingShingle | climate change agriculture food security Gaihre, Yam Kanta Wassmann, Reiner Villegas Pangga, Gina Sanabria, Joaquin Aquino, Edna Santa Cruz, Pompe C. Paningbatan, E.P. Effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice |
| title | Effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice |
| title_full | Effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice |
| title_fullStr | Effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice |
| title_full_unstemmed | Effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice |
| title_short | Effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice |
| title_sort | effects of increased temperatures and rice straw incorporation on methane and nitrous oxide emissions in a greenhouse experiment with rice |
| topic | climate change agriculture food security |
| url | https://hdl.handle.net/10568/89876 |
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