Long-term organic farming on a citrus plantation results in soil organic carbon recovery

A. Novara*, M. Pulido, J. Rodrigo-Comino, S.D.I. Prima, P. Smith, L. Gristina, A. Giménez-Morera, E. Terol, D. Salesa, S. Keesstra

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)

Abstract

It has been shown that soil management under organic farming can enhance soil organic carbon, thereby mitigating atmospheric greenhouse gas increases, but until now quantitative evaluations based on long term experiments are scarce, especially under Mediterranean conditions. Changes in soil organic carbon (SOC) content were examined in response to organic management with cover crops in a Mediterranean citrus plantation using 21 years of survey data. Soil organic carbon increase was more apparent 5 years after a land management change suggesting that, for citrus plantations on Mediterranean conditions, studies should be longer than five years in duration. Soil organic carbon sequestration rate did not significantly change during the 21 years of observation, with values ranging from -1.10 Mg C ha-1 y-1 to 1.89 Mg C ha-1 y-1. After 21 years, 61 Mg CO2 ha-1 were sequestered in long-lived soil C pools. These findings demonstrate that organic management is an effective strategy to restore or increase SOC content in Mediterranean citrus systems.

Original languageEnglish
Pages (from-to)271-286
Number of pages16
JournalGeographical Research Letters
Volume45
Issue number1
DOIs
Publication statusPublished - Oct 2019

Fingerprint

organic farming
plantation
organic carbon
management
study conditions
change management
soil
atmospheric gas
cover crop
experiment
soil management
evaluation
land management
carbon sequestration
Values
greenhouse gas

Keywords

  • Carbon sequestration rate
  • Citrus
  • Long-term experiment
  • Organic carbon

Cite this

Novara, A., Pulido, M., Rodrigo-Comino, J., Prima, S. D. I., Smith, P., Gristina, L., ... Keesstra, S. (2019). Long-term organic farming on a citrus plantation results in soil organic carbon recovery. Geographical Research Letters, 45(1), 271-286. https://doi.org/10.18172/cig.3794
Novara, A. ; Pulido, M. ; Rodrigo-Comino, J. ; Prima, S.D.I. ; Smith, P. ; Gristina, L. ; Giménez-Morera, A. ; Terol, E. ; Salesa, D. ; Keesstra, S. / Long-term organic farming on a citrus plantation results in soil organic carbon recovery. In: Geographical Research Letters. 2019 ; Vol. 45, No. 1. pp. 271-286.
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Novara, A, Pulido, M, Rodrigo-Comino, J, Prima, SDI, Smith, P, Gristina, L, Giménez-Morera, A, Terol, E, Salesa, D & Keesstra, S 2019, 'Long-term organic farming on a citrus plantation results in soil organic carbon recovery', Geographical Research Letters, vol. 45, no. 1, pp. 271-286. https://doi.org/10.18172/cig.3794

Long-term organic farming on a citrus plantation results in soil organic carbon recovery. / Novara, A.; Pulido, M.; Rodrigo-Comino, J.; Prima, S.D.I.; Smith, P.; Gristina, L.; Giménez-Morera, A.; Terol, E.; Salesa, D.; Keesstra, S.

In: Geographical Research Letters, Vol. 45, No. 1, 10.2019, p. 271-286.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Long-term organic farming on a citrus plantation results in soil organic carbon recovery

AU - Novara, A.

AU - Pulido, M.

AU - Rodrigo-Comino, J.

AU - Prima, S.D.I.

AU - Smith, P.

AU - Gristina, L.

AU - Giménez-Morera, A.

AU - Terol, E.

AU - Salesa, D.

AU - Keesstra, S.

PY - 2019/10

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N2 - It has been shown that soil management under organic farming can enhance soil organic carbon, thereby mitigating atmospheric greenhouse gas increases, but until now quantitative evaluations based on long term experiments are scarce, especially under Mediterranean conditions. Changes in soil organic carbon (SOC) content were examined in response to organic management with cover crops in a Mediterranean citrus plantation using 21 years of survey data. Soil organic carbon increase was more apparent 5 years after a land management change suggesting that, for citrus plantations on Mediterranean conditions, studies should be longer than five years in duration. Soil organic carbon sequestration rate did not significantly change during the 21 years of observation, with values ranging from -1.10 Mg C ha-1 y-1 to 1.89 Mg C ha-1 y-1. After 21 years, 61 Mg CO2 ha-1 were sequestered in long-lived soil C pools. These findings demonstrate that organic management is an effective strategy to restore or increase SOC content in Mediterranean citrus systems.

AB - It has been shown that soil management under organic farming can enhance soil organic carbon, thereby mitigating atmospheric greenhouse gas increases, but until now quantitative evaluations based on long term experiments are scarce, especially under Mediterranean conditions. Changes in soil organic carbon (SOC) content were examined in response to organic management with cover crops in a Mediterranean citrus plantation using 21 years of survey data. Soil organic carbon increase was more apparent 5 years after a land management change suggesting that, for citrus plantations on Mediterranean conditions, studies should be longer than five years in duration. Soil organic carbon sequestration rate did not significantly change during the 21 years of observation, with values ranging from -1.10 Mg C ha-1 y-1 to 1.89 Mg C ha-1 y-1. After 21 years, 61 Mg CO2 ha-1 were sequestered in long-lived soil C pools. These findings demonstrate that organic management is an effective strategy to restore or increase SOC content in Mediterranean citrus systems.

KW - Carbon sequestration rate

KW - Citrus

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Novara A, Pulido M, Rodrigo-Comino J, Prima SDI, Smith P, Gristina L et al. Long-term organic farming on a citrus plantation results in soil organic carbon recovery. Geographical Research Letters. 2019 Oct;45(1):271-286. https://doi.org/10.18172/cig.3794