Nitrous Oxide Emissions in Pineapple Cultivation on a Tropical Peat Soil

Alicia Vanessa Jeffary, Osumanu Haruna Ahmed, Roland Kueh Jui Heng, Liza Nuriati Lim Kim Choo, Latifah Omar, Adiza Alhassan Musah and Arifin Abdu
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Alicia Vanessa Jeffary: Department of Crop Science, Faculty of Agricultural Science and Forestry, Bintulu Campus, Universiti Putra Malaysia, Bintulu 97008, Malaysia
Osumanu Haruna Ahmed: Department of Forestry Science, Faculty of Agricultural Science and Forestry, Bintulu Campus, Universiti Putra Malaysia, Bintulu 97008, Malaysia
Roland Kueh Jui Heng: Department of Forestry Science, Faculty of Agricultural Science and Forestry, Bintulu Campus, Universiti Putra Malaysia, Bintulu 97008, Malaysia
Liza Nuriati Lim Kim Choo: Department of Crop Science, Faculty of Agricultural Science and Forestry, Bintulu Campus, Universiti Putra Malaysia, Bintulu 97008, Malaysia
Latifah Omar: Department of Crop Science, Faculty of Agricultural Science and Forestry, Bintulu Campus, Universiti Putra Malaysia, Bintulu 97008, Malaysia
Adiza Alhassan Musah: Faculty of Business Management and Professional Studies, Management and Science University, University Drive, Off Persiaran Olahraga Section 13, Shah Alam 40100, Malaysia
Arifin Abdu: Department of Forest Management, Faculty of Forestry and Environment, Universiti Putra Malaysia, Serdang 43400, Malaysia

Sustainability, 2021, vol. 13, issue 9, 1-14

Abstract: Farming systems on peat soils are novel, considering the complexities of these organic soil. Since peat soils effectively capture greenhouse gases in their natural state, cultivating peat soils with annual or perennial crops such as pineapples necessitates the monitoring of nitrous oxide (N 2 O) emissions, especially from cultivated peat lands, due to a lack of data on N 2 O emissions. An on-farm experiment was carried out to determine the movement of N 2 O in pineapple production on peat soil. Additionally, the experiment was carried out to determine if the peat soil temperature and the N 2 O emissions were related. The chamber method was used to capture the N 2 O fluxes daily (for dry and wet seasons) after which gas chromatography was used to determine N 2 O followed by expressing the emission of this gas in t ha −1 yr −1 . The movement of N 2 O horizontally (832 t N 2 O ha −1 yr −1 ) during the dry period was higher than in the wet period (599 t N 2 O ha −1 yr −1 ) because of C and N substrate in the peat soil, in addition to the fertilizer used in fertilizing the pineapple plants. The vertical movement of N 2 O (44 t N 2 O ha −1 yr −1 ) was higher in the dry season relative to N 2 O emission (38 t N 2 O ha −1 yr −1 ) during the wet season because of nitrification and denitrification of N fertilizer. The peat soil temperature did not affect the direction (horizontal and vertical) of the N 2 O emission, suggesting that these factors are not related. Therefore, it can be concluded that N 2 O movement in peat soils under pineapple cultivation on peat lands occurs horizontally and vertically, regardless of season, and there is a need to ensure minimum tilling of the cultivated peat soils to prevent them from being an N 2 O source instead of an N 2 O sink.

Keywords: fertilization; greenhouse gases; horizontal emissions; tropical peat lands; vertical emissions (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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