Nitrous oxide emissions from wetland soil amended with inorganic and organic fertilizers
Agricultural soils are a primary source of anthropogenic trace gas emissions, and the subtropics contribute greatly, particularly since 51% of world soils are in these climate zones. A field experiment was carried out in an ephemeral wetland in central Zimbabwe in order to determine the effect of ca...
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| Language: | English |
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Taylor and Francis
2014
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| Online Access: | http://hdl.handle.net/11408/497 |
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| author | Masaka, Johnson Nyamangara, Justice Wuta, Menas |
| author_facet | Masaka, Johnson Nyamangara, Justice Wuta, Menas |
| author_sort | Masaka, Johnson |
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| description | Agricultural soils are a primary source of anthropogenic trace gas emissions, and the subtropics contribute greatly, particularly since 51% of world soils are in these climate zones. A field experiment was carried out in an ephemeral wetland in central Zimbabwe in order to determine the effect of cattle manure (1.36% N) and mineral N fertilizer (ammonium nitrate, 34.5% N) application on N2O fluxes from soil. Combined applications
of 0 kg N fertilizer + 0 Mg cattle manure ha−1 (control), 100 kg N fertilizer + 15 Mg manure ha−1 and 200 kg N fertilizer + 30 Mg manure ha−1 constituted the three treatments arranged in a randomized complete block design with four replications. Tomato and rape crops were grown in rotation over a period of two seasons.
Emissions of N2O were sampled using the static chamber technique. Increasing N fertilizer and manure application rates from low to high rates increased the N2O fluxes by 37–106%. When low and high rates were applied to the tomato and rape crops, 0.51%, 0.40%, and 0.93%, 0.64% of applied N was lost as N2O, respectively. This implies that rape production has a greater N2O emitting potential than the production of
tomatoes in wetlands. |
| id | ir-11408-497 |
| institution | My University |
| language | English |
| publishDate | 2014 |
| publisher | Taylor and Francis |
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| spelling | ir-11408-4972022-10-15T20:42:42Z Nitrous oxide emissions from wetland soil amended with inorganic and organic fertilizers Masaka, Johnson Nyamangara, Justice Wuta, Menas Manure, fertilizer Agricultural soils are a primary source of anthropogenic trace gas emissions, and the subtropics contribute greatly, particularly since 51% of world soils are in these climate zones. A field experiment was carried out in an ephemeral wetland in central Zimbabwe in order to determine the effect of cattle manure (1.36% N) and mineral N fertilizer (ammonium nitrate, 34.5% N) application on N2O fluxes from soil. Combined applications of 0 kg N fertilizer + 0 Mg cattle manure ha−1 (control), 100 kg N fertilizer + 15 Mg manure ha−1 and 200 kg N fertilizer + 30 Mg manure ha−1 constituted the three treatments arranged in a randomized complete block design with four replications. Tomato and rape crops were grown in rotation over a period of two seasons. Emissions of N2O were sampled using the static chamber technique. Increasing N fertilizer and manure application rates from low to high rates increased the N2O fluxes by 37–106%. When low and high rates were applied to the tomato and rape crops, 0.51%, 0.40%, and 0.93%, 0.64% of applied N was lost as N2O, respectively. This implies that rape production has a greater N2O emitting potential than the production of tomatoes in wetlands. 2014-11-12T06:47:00Z 2014-11-12T06:47:00Z 2014 http://hdl.handle.net/11408/497 en Archives of Agronomy and Soil Science;Vol. 60; No 10 open Taylor and Francis |
| spellingShingle | Manure, fertilizer Masaka, Johnson Nyamangara, Justice Wuta, Menas Nitrous oxide emissions from wetland soil amended with inorganic and organic fertilizers |
| title | Nitrous oxide emissions from wetland soil amended with inorganic and organic fertilizers |
| title_full | Nitrous oxide emissions from wetland soil amended with inorganic and organic fertilizers |
| title_fullStr | Nitrous oxide emissions from wetland soil amended with inorganic and organic fertilizers |
| title_full_unstemmed | Nitrous oxide emissions from wetland soil amended with inorganic and organic fertilizers |
| title_short | Nitrous oxide emissions from wetland soil amended with inorganic and organic fertilizers |
| title_sort | nitrous oxide emissions from wetland soil amended with inorganic and organic fertilizers |
| topic | Manure, fertilizer |
| url | http://hdl.handle.net/11408/497 |
| work_keys_str_mv | AT masakajohnson nitrousoxideemissionsfromwetlandsoilamendedwithinorganicandorganicfertilizers AT nyamangarajustice nitrousoxideemissionsfromwetlandsoilamendedwithinorganicandorganicfertilizers AT wutamenas nitrousoxideemissionsfromwetlandsoilamendedwithinorganicandorganicfertilizers |