Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties
Abstract Use of nitrogen (N) fertilizer is underway to increase in Sub-Saharan Africa (SSA). The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols,...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Zheng, Jinsen [verfasserIn] Kilasara, Method M. [verfasserIn] Mmari, William N. [verfasserIn] Funakawa, Shinya [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Biology and fertility of soils - Berlin : Springer, 1985, 54(2018), 3 vom: 28. Feb., Seite 411-422 |
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| Übergeordnetes Werk: |
volume:54 ; year:2018 ; number:3 ; day:28 ; month:02 ; pages:411-422 |
| Links: |
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| DOI / URN: |
10.1007/s00374-018-1270-0 |
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| Katalog-ID: |
SPR004967070 |
|---|
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| 245 | 1 | 0 | |a Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties |
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| 520 | |a Abstract Use of nitrogen (N) fertilizer is underway to increase in Sub-Saharan Africa (SSA). The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols, AND) with maize crop in the East African highlands, we measured $ NH_{3} $ volatilization following urea broadcast at six rates (0–150 kg N $ ha^{−1} $) for 17 days, using a semi-open static chamber method. Immediate irrigation and urea deep placement were tested as mitigation treatments. The underlying mechanism was assessed by monitoring soil pH and mineral N ($ NH_{4} $+ and $ NO_{3} $−) concentrations. More cumulative $ NH_{3} $-N was volatilized in ALF than in AND at the same urea-N rate. Generally, higher urea-N rates increased proportional $ NH_{3} $-N loss (percent of applied N loss as $ NH_{3} $-N). Based on well-fitted sigmoid models, simple surface urea application is not recommended for ALF, while up to 60 kg N $ ha^{−1} $ could be adopted for AND soils. The susceptibility of ALF to $ NH_{3} $ loss mainly resulted from its low pH buffering capacity, low cation exchange capacity, and high urease activity. Both mitigation treatments were effective. The inhibited rise of soil pH but not $ NH_{4} $+ concentration was the main reason for the mitigated $ NH_{3} $-N losses, although nitrification in the irrigation treatment might also have contributed. Our results showed that in acidic soils common to SSA croplands, proportional $ NH_{3} $-N loss can be substantial even at a low urea-N rate; and that the design of mitigation treatments should consider the soil’s inherent capacity to buffer $ NH_{3} $ loss. | ||
| 650 | 4 | |a Acidic soil |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Urease activity |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a pH buffering capacity |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Nitrification |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Mitigation strategy |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Sub-Saharan Africa |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Kilasara, Method M. |e verfasserin |4 aut | |
| 700 | 1 | |a Mmari, William N. |e verfasserin |4 aut | |
| 700 | 1 | |a Funakawa, Shinya |e verfasserin |4 aut | |
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| 773 | 1 | 8 | |g volume:54 |g year:2018 |g number:3 |g day:28 |g month:02 |g pages:411-422 |
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10.1007/s00374-018-1270-0 doi (DE-627)SPR004967070 (SPR)s00374-018-1270-0-e DE-627 ger DE-627 rakwb eng 630 640 ASE 38.60 bkl 38.00 bkl 48.32 bkl Zheng, Jinsen verfasserin aut Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Use of nitrogen (N) fertilizer is underway to increase in Sub-Saharan Africa (SSA). The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols, AND) with maize crop in the East African highlands, we measured $ NH_{3} $ volatilization following urea broadcast at six rates (0–150 kg N $ ha^{−1} $) for 17 days, using a semi-open static chamber method. Immediate irrigation and urea deep placement were tested as mitigation treatments. The underlying mechanism was assessed by monitoring soil pH and mineral N ($ NH_{4} $+ and $ NO_{3} $−) concentrations. More cumulative $ NH_{3} $-N was volatilized in ALF than in AND at the same urea-N rate. Generally, higher urea-N rates increased proportional $ NH_{3} $-N loss (percent of applied N loss as $ NH_{3} $-N). Based on well-fitted sigmoid models, simple surface urea application is not recommended for ALF, while up to 60 kg N $ ha^{−1} $ could be adopted for AND soils. The susceptibility of ALF to $ NH_{3} $ loss mainly resulted from its low pH buffering capacity, low cation exchange capacity, and high urease activity. Both mitigation treatments were effective. The inhibited rise of soil pH but not $ NH_{4} $+ concentration was the main reason for the mitigated $ NH_{3} $-N losses, although nitrification in the irrigation treatment might also have contributed. Our results showed that in acidic soils common to SSA croplands, proportional $ NH_{3} $-N loss can be substantial even at a low urea-N rate; and that the design of mitigation treatments should consider the soil’s inherent capacity to buffer $ NH_{3} $ loss. Acidic soil (dpeaa)DE-He213 Urease activity (dpeaa)DE-He213 pH buffering capacity (dpeaa)DE-He213 Nitrification (dpeaa)DE-He213 Mitigation strategy (dpeaa)DE-He213 Sub-Saharan Africa (dpeaa)DE-He213 Kilasara, Method M. verfasserin aut Mmari, William N. verfasserin aut Funakawa, Shinya verfasserin aut Enthalten in Biology and fertility of soils Berlin : Springer, 1985 54(2018), 3 vom: 28. Feb., Seite 411-422 (DE-627)269015426 (DE-600)1473419-9 1432-0789 nnns volume:54 year:2018 number:3 day:28 month:02 pages:411-422 https://dx.doi.org/10.1007/s00374-018-1270-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-FOR SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.60 ASE 38.00 ASE 48.32 ASE AR 54 2018 3 28 02 411-422 |
| spelling |
10.1007/s00374-018-1270-0 doi (DE-627)SPR004967070 (SPR)s00374-018-1270-0-e DE-627 ger DE-627 rakwb eng 630 640 ASE 38.60 bkl 38.00 bkl 48.32 bkl Zheng, Jinsen verfasserin aut Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Use of nitrogen (N) fertilizer is underway to increase in Sub-Saharan Africa (SSA). The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols, AND) with maize crop in the East African highlands, we measured $ NH_{3} $ volatilization following urea broadcast at six rates (0–150 kg N $ ha^{−1} $) for 17 days, using a semi-open static chamber method. Immediate irrigation and urea deep placement were tested as mitigation treatments. The underlying mechanism was assessed by monitoring soil pH and mineral N ($ NH_{4} $+ and $ NO_{3} $−) concentrations. More cumulative $ NH_{3} $-N was volatilized in ALF than in AND at the same urea-N rate. Generally, higher urea-N rates increased proportional $ NH_{3} $-N loss (percent of applied N loss as $ NH_{3} $-N). Based on well-fitted sigmoid models, simple surface urea application is not recommended for ALF, while up to 60 kg N $ ha^{−1} $ could be adopted for AND soils. The susceptibility of ALF to $ NH_{3} $ loss mainly resulted from its low pH buffering capacity, low cation exchange capacity, and high urease activity. Both mitigation treatments were effective. The inhibited rise of soil pH but not $ NH_{4} $+ concentration was the main reason for the mitigated $ NH_{3} $-N losses, although nitrification in the irrigation treatment might also have contributed. Our results showed that in acidic soils common to SSA croplands, proportional $ NH_{3} $-N loss can be substantial even at a low urea-N rate; and that the design of mitigation treatments should consider the soil’s inherent capacity to buffer $ NH_{3} $ loss. Acidic soil (dpeaa)DE-He213 Urease activity (dpeaa)DE-He213 pH buffering capacity (dpeaa)DE-He213 Nitrification (dpeaa)DE-He213 Mitigation strategy (dpeaa)DE-He213 Sub-Saharan Africa (dpeaa)DE-He213 Kilasara, Method M. verfasserin aut Mmari, William N. verfasserin aut Funakawa, Shinya verfasserin aut Enthalten in Biology and fertility of soils Berlin : Springer, 1985 54(2018), 3 vom: 28. Feb., Seite 411-422 (DE-627)269015426 (DE-600)1473419-9 1432-0789 nnns volume:54 year:2018 number:3 day:28 month:02 pages:411-422 https://dx.doi.org/10.1007/s00374-018-1270-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-FOR SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.60 ASE 38.00 ASE 48.32 ASE AR 54 2018 3 28 02 411-422 |
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10.1007/s00374-018-1270-0 doi (DE-627)SPR004967070 (SPR)s00374-018-1270-0-e DE-627 ger DE-627 rakwb eng 630 640 ASE 38.60 bkl 38.00 bkl 48.32 bkl Zheng, Jinsen verfasserin aut Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Use of nitrogen (N) fertilizer is underway to increase in Sub-Saharan Africa (SSA). The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols, AND) with maize crop in the East African highlands, we measured $ NH_{3} $ volatilization following urea broadcast at six rates (0–150 kg N $ ha^{−1} $) for 17 days, using a semi-open static chamber method. Immediate irrigation and urea deep placement were tested as mitigation treatments. The underlying mechanism was assessed by monitoring soil pH and mineral N ($ NH_{4} $+ and $ NO_{3} $−) concentrations. More cumulative $ NH_{3} $-N was volatilized in ALF than in AND at the same urea-N rate. Generally, higher urea-N rates increased proportional $ NH_{3} $-N loss (percent of applied N loss as $ NH_{3} $-N). Based on well-fitted sigmoid models, simple surface urea application is not recommended for ALF, while up to 60 kg N $ ha^{−1} $ could be adopted for AND soils. The susceptibility of ALF to $ NH_{3} $ loss mainly resulted from its low pH buffering capacity, low cation exchange capacity, and high urease activity. Both mitigation treatments were effective. The inhibited rise of soil pH but not $ NH_{4} $+ concentration was the main reason for the mitigated $ NH_{3} $-N losses, although nitrification in the irrigation treatment might also have contributed. Our results showed that in acidic soils common to SSA croplands, proportional $ NH_{3} $-N loss can be substantial even at a low urea-N rate; and that the design of mitigation treatments should consider the soil’s inherent capacity to buffer $ NH_{3} $ loss. Acidic soil (dpeaa)DE-He213 Urease activity (dpeaa)DE-He213 pH buffering capacity (dpeaa)DE-He213 Nitrification (dpeaa)DE-He213 Mitigation strategy (dpeaa)DE-He213 Sub-Saharan Africa (dpeaa)DE-He213 Kilasara, Method M. verfasserin aut Mmari, William N. verfasserin aut Funakawa, Shinya verfasserin aut Enthalten in Biology and fertility of soils Berlin : Springer, 1985 54(2018), 3 vom: 28. Feb., Seite 411-422 (DE-627)269015426 (DE-600)1473419-9 1432-0789 nnns volume:54 year:2018 number:3 day:28 month:02 pages:411-422 https://dx.doi.org/10.1007/s00374-018-1270-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-FOR SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.60 ASE 38.00 ASE 48.32 ASE AR 54 2018 3 28 02 411-422 |
| allfieldsGer |
10.1007/s00374-018-1270-0 doi (DE-627)SPR004967070 (SPR)s00374-018-1270-0-e DE-627 ger DE-627 rakwb eng 630 640 ASE 38.60 bkl 38.00 bkl 48.32 bkl Zheng, Jinsen verfasserin aut Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Use of nitrogen (N) fertilizer is underway to increase in Sub-Saharan Africa (SSA). The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols, AND) with maize crop in the East African highlands, we measured $ NH_{3} $ volatilization following urea broadcast at six rates (0–150 kg N $ ha^{−1} $) for 17 days, using a semi-open static chamber method. Immediate irrigation and urea deep placement were tested as mitigation treatments. The underlying mechanism was assessed by monitoring soil pH and mineral N ($ NH_{4} $+ and $ NO_{3} $−) concentrations. More cumulative $ NH_{3} $-N was volatilized in ALF than in AND at the same urea-N rate. Generally, higher urea-N rates increased proportional $ NH_{3} $-N loss (percent of applied N loss as $ NH_{3} $-N). Based on well-fitted sigmoid models, simple surface urea application is not recommended for ALF, while up to 60 kg N $ ha^{−1} $ could be adopted for AND soils. The susceptibility of ALF to $ NH_{3} $ loss mainly resulted from its low pH buffering capacity, low cation exchange capacity, and high urease activity. Both mitigation treatments were effective. The inhibited rise of soil pH but not $ NH_{4} $+ concentration was the main reason for the mitigated $ NH_{3} $-N losses, although nitrification in the irrigation treatment might also have contributed. Our results showed that in acidic soils common to SSA croplands, proportional $ NH_{3} $-N loss can be substantial even at a low urea-N rate; and that the design of mitigation treatments should consider the soil’s inherent capacity to buffer $ NH_{3} $ loss. Acidic soil (dpeaa)DE-He213 Urease activity (dpeaa)DE-He213 pH buffering capacity (dpeaa)DE-He213 Nitrification (dpeaa)DE-He213 Mitigation strategy (dpeaa)DE-He213 Sub-Saharan Africa (dpeaa)DE-He213 Kilasara, Method M. verfasserin aut Mmari, William N. verfasserin aut Funakawa, Shinya verfasserin aut Enthalten in Biology and fertility of soils Berlin : Springer, 1985 54(2018), 3 vom: 28. Feb., Seite 411-422 (DE-627)269015426 (DE-600)1473419-9 1432-0789 nnns volume:54 year:2018 number:3 day:28 month:02 pages:411-422 https://dx.doi.org/10.1007/s00374-018-1270-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-FOR SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.60 ASE 38.00 ASE 48.32 ASE AR 54 2018 3 28 02 411-422 |
| allfieldsSound |
10.1007/s00374-018-1270-0 doi (DE-627)SPR004967070 (SPR)s00374-018-1270-0-e DE-627 ger DE-627 rakwb eng 630 640 ASE 38.60 bkl 38.00 bkl 48.32 bkl Zheng, Jinsen verfasserin aut Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Use of nitrogen (N) fertilizer is underway to increase in Sub-Saharan Africa (SSA). The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols, AND) with maize crop in the East African highlands, we measured $ NH_{3} $ volatilization following urea broadcast at six rates (0–150 kg N $ ha^{−1} $) for 17 days, using a semi-open static chamber method. Immediate irrigation and urea deep placement were tested as mitigation treatments. The underlying mechanism was assessed by monitoring soil pH and mineral N ($ NH_{4} $+ and $ NO_{3} $−) concentrations. More cumulative $ NH_{3} $-N was volatilized in ALF than in AND at the same urea-N rate. Generally, higher urea-N rates increased proportional $ NH_{3} $-N loss (percent of applied N loss as $ NH_{3} $-N). Based on well-fitted sigmoid models, simple surface urea application is not recommended for ALF, while up to 60 kg N $ ha^{−1} $ could be adopted for AND soils. The susceptibility of ALF to $ NH_{3} $ loss mainly resulted from its low pH buffering capacity, low cation exchange capacity, and high urease activity. Both mitigation treatments were effective. The inhibited rise of soil pH but not $ NH_{4} $+ concentration was the main reason for the mitigated $ NH_{3} $-N losses, although nitrification in the irrigation treatment might also have contributed. Our results showed that in acidic soils common to SSA croplands, proportional $ NH_{3} $-N loss can be substantial even at a low urea-N rate; and that the design of mitigation treatments should consider the soil’s inherent capacity to buffer $ NH_{3} $ loss. Acidic soil (dpeaa)DE-He213 Urease activity (dpeaa)DE-He213 pH buffering capacity (dpeaa)DE-He213 Nitrification (dpeaa)DE-He213 Mitigation strategy (dpeaa)DE-He213 Sub-Saharan Africa (dpeaa)DE-He213 Kilasara, Method M. verfasserin aut Mmari, William N. verfasserin aut Funakawa, Shinya verfasserin aut Enthalten in Biology and fertility of soils Berlin : Springer, 1985 54(2018), 3 vom: 28. Feb., Seite 411-422 (DE-627)269015426 (DE-600)1473419-9 1432-0789 nnns volume:54 year:2018 number:3 day:28 month:02 pages:411-422 https://dx.doi.org/10.1007/s00374-018-1270-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OPC-GGO SSG-OPC-FOR SSG-OPC-ASE GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_647 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2360 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 38.60 ASE 38.00 ASE 48.32 ASE AR 54 2018 3 28 02 411-422 |
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English |
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Enthalten in Biology and fertility of soils 54(2018), 3 vom: 28. Feb., Seite 411-422 volume:54 year:2018 number:3 day:28 month:02 pages:411-422 |
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Enthalten in Biology and fertility of soils 54(2018), 3 vom: 28. Feb., Seite 411-422 volume:54 year:2018 number:3 day:28 month:02 pages:411-422 |
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Acidic soil Urease activity pH buffering capacity Nitrification Mitigation strategy Sub-Saharan Africa |
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Biology and fertility of soils |
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Zheng, Jinsen @@aut@@ Kilasara, Method M. @@aut@@ Mmari, William N. @@aut@@ Funakawa, Shinya @@aut@@ |
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2018-02-28T00:00:00Z |
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The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols, AND) with maize crop in the East African highlands, we measured $ NH_{3} $ volatilization following urea broadcast at six rates (0–150 kg N $ ha^{−1} $) for 17 days, using a semi-open static chamber method. Immediate irrigation and urea deep placement were tested as mitigation treatments. The underlying mechanism was assessed by monitoring soil pH and mineral N ($ NH_{4} $+ and $ NO_{3} $−) concentrations. More cumulative $ NH_{3} $-N was volatilized in ALF than in AND at the same urea-N rate. Generally, higher urea-N rates increased proportional $ NH_{3} $-N loss (percent of applied N loss as $ NH_{3} $-N). Based on well-fitted sigmoid models, simple surface urea application is not recommended for ALF, while up to 60 kg N $ ha^{−1} $ could be adopted for AND soils. The susceptibility of ALF to $ NH_{3} $ loss mainly resulted from its low pH buffering capacity, low cation exchange capacity, and high urease activity. Both mitigation treatments were effective. The inhibited rise of soil pH but not $ NH_{4} $+ concentration was the main reason for the mitigated $ NH_{3} $-N losses, although nitrification in the irrigation treatment might also have contributed. Our results showed that in acidic soils common to SSA croplands, proportional $ NH_{3} $-N loss can be substantial even at a low urea-N rate; and that the design of mitigation treatments should consider the soil’s inherent capacity to buffer $ NH_{3} $ loss.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Acidic soil</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Urease activity</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">pH buffering capacity</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Nitrification</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Mitigation strategy</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Sub-Saharan Africa</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Kilasara, Method M.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Mmari, William N.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Funakawa, Shinya</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Biology and fertility of soils</subfield><subfield code="d">Berlin : Springer, 1985</subfield><subfield code="g">54(2018), 3 vom: 28. 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Zheng, Jinsen |
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Zheng, Jinsen ddc 630 bkl 38.60 bkl 38.00 bkl 48.32 misc Acidic soil misc Urease activity misc pH buffering capacity misc Nitrification misc Mitigation strategy misc Sub-Saharan Africa Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties |
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630 640 ASE 38.60 bkl 38.00 bkl 48.32 bkl Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties Acidic soil (dpeaa)DE-He213 Urease activity (dpeaa)DE-He213 pH buffering capacity (dpeaa)DE-He213 Nitrification (dpeaa)DE-He213 Mitigation strategy (dpeaa)DE-He213 Sub-Saharan Africa (dpeaa)DE-He213 |
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ddc 630 bkl 38.60 bkl 38.00 bkl 48.32 misc Acidic soil misc Urease activity misc pH buffering capacity misc Nitrification misc Mitigation strategy misc Sub-Saharan Africa |
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ddc 630 bkl 38.60 bkl 38.00 bkl 48.32 misc Acidic soil misc Urease activity misc pH buffering capacity misc Nitrification misc Mitigation strategy misc Sub-Saharan Africa |
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ddc 630 bkl 38.60 bkl 38.00 bkl 48.32 misc Acidic soil misc Urease activity misc pH buffering capacity misc Nitrification misc Mitigation strategy misc Sub-Saharan Africa |
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Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties |
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Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties |
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Biology and fertility of soils |
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Zheng, Jinsen Kilasara, Method M. Mmari, William N. Funakawa, Shinya |
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ammonia volatilization following urea application at maize fields in the east african highlands with different soil properties |
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Ammonia volatilization following urea application at maize fields in the East African highlands with different soil properties |
| abstract |
Abstract Use of nitrogen (N) fertilizer is underway to increase in Sub-Saharan Africa (SSA). The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols, AND) with maize crop in the East African highlands, we measured $ NH_{3} $ volatilization following urea broadcast at six rates (0–150 kg N $ ha^{−1} $) for 17 days, using a semi-open static chamber method. Immediate irrigation and urea deep placement were tested as mitigation treatments. The underlying mechanism was assessed by monitoring soil pH and mineral N ($ NH_{4} $+ and $ NO_{3} $−) concentrations. More cumulative $ NH_{3} $-N was volatilized in ALF than in AND at the same urea-N rate. Generally, higher urea-N rates increased proportional $ NH_{3} $-N loss (percent of applied N loss as $ NH_{3} $-N). Based on well-fitted sigmoid models, simple surface urea application is not recommended for ALF, while up to 60 kg N $ ha^{−1} $ could be adopted for AND soils. The susceptibility of ALF to $ NH_{3} $ loss mainly resulted from its low pH buffering capacity, low cation exchange capacity, and high urease activity. Both mitigation treatments were effective. The inhibited rise of soil pH but not $ NH_{4} $+ concentration was the main reason for the mitigated $ NH_{3} $-N losses, although nitrification in the irrigation treatment might also have contributed. Our results showed that in acidic soils common to SSA croplands, proportional $ NH_{3} $-N loss can be substantial even at a low urea-N rate; and that the design of mitigation treatments should consider the soil’s inherent capacity to buffer $ NH_{3} $ loss. |
| abstractGer |
Abstract Use of nitrogen (N) fertilizer is underway to increase in Sub-Saharan Africa (SSA). The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols, AND) with maize crop in the East African highlands, we measured $ NH_{3} $ volatilization following urea broadcast at six rates (0–150 kg N $ ha^{−1} $) for 17 days, using a semi-open static chamber method. Immediate irrigation and urea deep placement were tested as mitigation treatments. The underlying mechanism was assessed by monitoring soil pH and mineral N ($ NH_{4} $+ and $ NO_{3} $−) concentrations. More cumulative $ NH_{3} $-N was volatilized in ALF than in AND at the same urea-N rate. Generally, higher urea-N rates increased proportional $ NH_{3} $-N loss (percent of applied N loss as $ NH_{3} $-N). Based on well-fitted sigmoid models, simple surface urea application is not recommended for ALF, while up to 60 kg N $ ha^{−1} $ could be adopted for AND soils. The susceptibility of ALF to $ NH_{3} $ loss mainly resulted from its low pH buffering capacity, low cation exchange capacity, and high urease activity. Both mitigation treatments were effective. The inhibited rise of soil pH but not $ NH_{4} $+ concentration was the main reason for the mitigated $ NH_{3} $-N losses, although nitrification in the irrigation treatment might also have contributed. Our results showed that in acidic soils common to SSA croplands, proportional $ NH_{3} $-N loss can be substantial even at a low urea-N rate; and that the design of mitigation treatments should consider the soil’s inherent capacity to buffer $ NH_{3} $ loss. |
| abstract_unstemmed |
Abstract Use of nitrogen (N) fertilizer is underway to increase in Sub-Saharan Africa (SSA). The effect of increasing N rates on ammonia ($ NH_{3} $) volatilization—a main pathway of applied-N loss in cropping systems—has not been evaluated in this region. In two soils (Alfisols, ALF; and Andisols, AND) with maize crop in the East African highlands, we measured $ NH_{3} $ volatilization following urea broadcast at six rates (0–150 kg N $ ha^{−1} $) for 17 days, using a semi-open static chamber method. Immediate irrigation and urea deep placement were tested as mitigation treatments. The underlying mechanism was assessed by monitoring soil pH and mineral N ($ NH_{4} $+ and $ NO_{3} $−) concentrations. More cumulative $ NH_{3} $-N was volatilized in ALF than in AND at the same urea-N rate. Generally, higher urea-N rates increased proportional $ NH_{3} $-N loss (percent of applied N loss as $ NH_{3} $-N). Based on well-fitted sigmoid models, simple surface urea application is not recommended for ALF, while up to 60 kg N $ ha^{−1} $ could be adopted for AND soils. The susceptibility of ALF to $ NH_{3} $ loss mainly resulted from its low pH buffering capacity, low cation exchange capacity, and high urease activity. Both mitigation treatments were effective. The inhibited rise of soil pH but not $ NH_{4} $+ concentration was the main reason for the mitigated $ NH_{3} $-N losses, although nitrification in the irrigation treatment might also have contributed. Our results showed that in acidic soils common to SSA croplands, proportional $ NH_{3} $-N loss can be substantial even at a low urea-N rate; and that the design of mitigation treatments should consider the soil’s inherent capacity to buffer $ NH_{3} $ loss. |
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| score |
7.4005623 |