Energy balances and SOC and N stocks as affected by organic amendments and inorganic N fertilization in a semi-arid environment (IOSDV-Madrid)
A long-term field experiment (1984-2011), was conducted on a Calcic Haploxeralf from semi-arid central Spain to evaluate the combined effect of three treatments: farmyard manure (FYM), straw and control without organic amendments (WOA) and five increasing rates of mineral N on: (1) some energetic parameters of crop production, and (2) the effect of the different treatments on soil organic carbon (SOC) and total N stocks. Crop rotation included spring barley, wheat and sorghum. The energy balance variables considered were net energy produced (energy output minus energy input), the energy output/input ratio and energy productivity (crop yield per unit energy input). Results showed small differences between treatments. Total energy inputs varied from 9.86 GJ ha-1 year-1 (WOA) to 11.14 GJ ha-1 year-1 in the FYM system. For the three crops, total energy inputs increased with increasing rates of mineral N. Energy output was slightly lower in the WOA (33.40 GJ ha-1 year-1) than in the two organic systems (37.34 and 34.96 GJ ha-1 year-1 for FYM and straw respectively). Net energy followed a similar trend. At the end of the 27-year period, the stocks of SOC and total N had increased noticeably in the soil profile (0-30 cm) as a result of application of the two organic amendments. Most important SOC changes occurred in the FYM plots, with mean increases in the 0-10 cm depth, amounting an average of 9.9 Mg C ha-1 (667 kg C ha-1 year-1). Increases in N stocks in the top layer were similar under FYM and straw and ranged from 0.94 to 1.55 Mg N ha-1. By contrast, simultaneous addition of increasing rates of mineral N showed no significant effect on SOC and total N storage.
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Taylor & Francis
2013
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Subjects: | Carbon, Energy analysis, Nitrogen fertilization, Organic amendments, Semi-arid conditions, |
Online Access: | http://hdl.handle.net/10261/244496 http://dx.doi.org/10.13039/501100007273 http://dx.doi.org/10.13039/501100011698 |
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dig-ica-es-10261-2444962021-06-24T02:19:25Z Energy balances and SOC and N stocks as affected by organic amendments and inorganic N fertilization in a semi-arid environment (IOSDV-Madrid) López-Fando, Cristina Pardo Fernández, María Teresa Comisión Interministerial de Ciencia y Tecnología, CICYT (España) Junta de Comunidades de Castilla-La Mancha Carbon Energy analysis Nitrogen fertilization Organic amendments Semi-arid conditions A long-term field experiment (1984-2011), was conducted on a Calcic Haploxeralf from semi-arid central Spain to evaluate the combined effect of three treatments: farmyard manure (FYM), straw and control without organic amendments (WOA) and five increasing rates of mineral N on: (1) some energetic parameters of crop production, and (2) the effect of the different treatments on soil organic carbon (SOC) and total N stocks. Crop rotation included spring barley, wheat and sorghum. The energy balance variables considered were net energy produced (energy output minus energy input), the energy output/input ratio and energy productivity (crop yield per unit energy input). Results showed small differences between treatments. Total energy inputs varied from 9.86 GJ ha-1 year-1 (WOA) to 11.14 GJ ha-1 year-1 in the FYM system. For the three crops, total energy inputs increased with increasing rates of mineral N. Energy output was slightly lower in the WOA (33.40 GJ ha-1 year-1) than in the two organic systems (37.34 and 34.96 GJ ha-1 year-1 for FYM and straw respectively). Net energy followed a similar trend. At the end of the 27-year period, the stocks of SOC and total N had increased noticeably in the soil profile (0-30 cm) as a result of application of the two organic amendments. Most important SOC changes occurred in the FYM plots, with mean increases in the 0-10 cm depth, amounting an average of 9.9 Mg C ha-1 (667 kg C ha-1 year-1). Increases in N stocks in the top layer were similar under FYM and straw and ranged from 0.94 to 1.55 Mg N ha-1. By contrast, simultaneous addition of increasing rates of mineral N showed no significant effect on SOC and total N storage. This research was supported by the National Science Foundation of Spain (CICYT). AGL 2007-65698-CO3-02/AGR and the Junta de Comunidades de Castilla-La Mancha. POII10-0115-2863. 2021-06-23T11:10:10Z 2021-06-23T11:10:10Z 2013 2021-06-23T11:10:11Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1080/03650340.2012.701733 issn: 0365-0340 e-issn: 1476-3567 Archives of Agronomy and Soil Science 59(8): 1143-1158 (2013) http://hdl.handle.net/10261/244496 10.1080/03650340.2012.701733 http://dx.doi.org/10.13039/501100007273 http://dx.doi.org/10.13039/501100011698 http://dx.doi.org/10.1080/03650340.2012.701733 Sí none Taylor & Francis |
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Carbon Energy analysis Nitrogen fertilization Organic amendments Semi-arid conditions Carbon Energy analysis Nitrogen fertilization Organic amendments Semi-arid conditions |
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Carbon Energy analysis Nitrogen fertilization Organic amendments Semi-arid conditions Carbon Energy analysis Nitrogen fertilization Organic amendments Semi-arid conditions López-Fando, Cristina Pardo Fernández, María Teresa Energy balances and SOC and N stocks as affected by organic amendments and inorganic N fertilization in a semi-arid environment (IOSDV-Madrid) |
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A long-term field experiment (1984-2011), was conducted on a Calcic Haploxeralf from semi-arid central Spain to evaluate the combined effect of three treatments: farmyard manure (FYM), straw and control without organic amendments (WOA) and five increasing rates of mineral N on: (1) some energetic parameters of crop production, and (2) the effect of the different treatments on soil organic carbon (SOC) and total N stocks. Crop rotation included spring barley, wheat and sorghum. The energy balance variables considered were net energy produced (energy output minus energy input), the energy output/input ratio and energy productivity (crop yield per unit energy input). Results showed small differences between treatments. Total energy inputs varied from 9.86 GJ ha-1 year-1 (WOA) to 11.14 GJ ha-1 year-1 in the FYM system. For the three crops, total energy inputs increased with increasing rates of mineral N. Energy output was slightly lower in the WOA (33.40 GJ ha-1 year-1) than in the two organic systems (37.34 and 34.96 GJ ha-1 year-1 for FYM and straw respectively). Net energy followed a similar trend. At the end of the 27-year period, the stocks of SOC and total N had increased noticeably in the soil profile (0-30 cm) as a result of application of the two organic amendments. Most important SOC changes occurred in the FYM plots, with mean increases in the 0-10 cm depth, amounting an average of 9.9 Mg C ha-1 (667 kg C ha-1 year-1). Increases in N stocks in the top layer were similar under FYM and straw and ranged from 0.94 to 1.55 Mg N ha-1. By contrast, simultaneous addition of increasing rates of mineral N showed no significant effect on SOC and total N storage. |
author2 |
Comisión Interministerial de Ciencia y Tecnología, CICYT (España) |
author_facet |
Comisión Interministerial de Ciencia y Tecnología, CICYT (España) López-Fando, Cristina Pardo Fernández, María Teresa |
format |
artículo |
topic_facet |
Carbon Energy analysis Nitrogen fertilization Organic amendments Semi-arid conditions |
author |
López-Fando, Cristina Pardo Fernández, María Teresa |
author_sort |
López-Fando, Cristina |
title |
Energy balances and SOC and N stocks as affected by organic amendments and inorganic N fertilization in a semi-arid environment (IOSDV-Madrid) |
title_short |
Energy balances and SOC and N stocks as affected by organic amendments and inorganic N fertilization in a semi-arid environment (IOSDV-Madrid) |
title_full |
Energy balances and SOC and N stocks as affected by organic amendments and inorganic N fertilization in a semi-arid environment (IOSDV-Madrid) |
title_fullStr |
Energy balances and SOC and N stocks as affected by organic amendments and inorganic N fertilization in a semi-arid environment (IOSDV-Madrid) |
title_full_unstemmed |
Energy balances and SOC and N stocks as affected by organic amendments and inorganic N fertilization in a semi-arid environment (IOSDV-Madrid) |
title_sort |
energy balances and soc and n stocks as affected by organic amendments and inorganic n fertilization in a semi-arid environment (iosdv-madrid) |
publisher |
Taylor & Francis |
publishDate |
2013 |
url |
http://hdl.handle.net/10261/244496 http://dx.doi.org/10.13039/501100007273 http://dx.doi.org/10.13039/501100011698 |
work_keys_str_mv |
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