Effect of a legume cover crop Mucuna pruriens var. utilis on soil carbon in an ultisol under maize cultivation in southern Benin
Long term fallow is no longer possible in densely populated tropical areas, but legume cover crops can help maintain soil fertility. Our work aimed to study changes in soil carbon in a sandy loam Ultisol in Benin, which involved a 12-year experiment on three maize cropping systems under manual tillage: traditional no-input cultivation (T), mineral fertilized cultivation (NPK), and association with Mucuna pruriens (M). The origin of soil carbon was also determined through the natural abundance of soil and biomass 13C. In T, NPK and M changes in soil carbon at 0-40cm were -0.2, +0.2 and +1.3 t C ha-1 yr-1, with residue carbon amounting to 3.5, 6.4 and 10.0 t C ha-1 yr-1, respectively. After 12 years of experimentation, carbon originating from maize in litter-plus-soil (0-40 cm) represented less than 4% of both total carbon and overall maize residue carbon. In contrast, carbon originating from mucuna in litter-plus-soil represented more than 50% of both total carbon and overall mucuna residue carbon in M, possibly due to accelerated mineralization of native soil carbon (priming effect) and slow mulch decomposition. Carbon originating from weeds in litter-plus-soil represented c. 10% of both total carbon and overall weed residue carbon in T and NPK. Thus mucuna mulch was very effective in promoting carbon sequestration in the soil studied.
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Subjects: | P35 - Fertilité du sol, F08 - Systèmes et modes de culture, Mucuna pruriens, Zea mays, plante de couverture, Acrisol, fertilité du sol, carbone, http://aims.fao.org/aos/agrovoc/c_4971, http://aims.fao.org/aos/agrovoc/c_8504, http://aims.fao.org/aos/agrovoc/c_1936, http://aims.fao.org/aos/agrovoc/c_101, http://aims.fao.org/aos/agrovoc/c_7170, http://aims.fao.org/aos/agrovoc/c_1301, http://aims.fao.org/aos/agrovoc/c_875, |
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dig-cirad-fr-5317732024-01-28T14:27:38Z http://agritrop.cirad.fr/531773/ http://agritrop.cirad.fr/531773/ Effect of a legume cover crop Mucuna pruriens var. utilis on soil carbon in an ultisol under maize cultivation in southern Benin. Barthès Bernard, Azontonde Anastase, Blanchart Eric, Girardin Cyril, Villenave Cécile, Lesaint Sophie, Oliver Robert, Feller Christian. 2004. Soil Use and Management, 20 (2) : 231-239.https://doi.org/10.1111/j.1475-2743.2004.tb00363.x <https://doi.org/10.1111/j.1475-2743.2004.tb00363.x> Effect of a legume cover crop Mucuna pruriens var. utilis on soil carbon in an ultisol under maize cultivation in southern Benin Barthès, Bernard Azontonde, Anastase Blanchart, Eric Girardin, Cyril Villenave, Cécile Lesaint, Sophie Oliver, Robert Feller, Christian eng 2004 Soil Use and Management P35 - Fertilité du sol F08 - Systèmes et modes de culture Mucuna pruriens Zea mays plante de couverture Acrisol fertilité du sol carbone http://aims.fao.org/aos/agrovoc/c_4971 http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_1936 http://aims.fao.org/aos/agrovoc/c_101 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_1301 Bénin http://aims.fao.org/aos/agrovoc/c_875 Long term fallow is no longer possible in densely populated tropical areas, but legume cover crops can help maintain soil fertility. Our work aimed to study changes in soil carbon in a sandy loam Ultisol in Benin, which involved a 12-year experiment on three maize cropping systems under manual tillage: traditional no-input cultivation (T), mineral fertilized cultivation (NPK), and association with Mucuna pruriens (M). The origin of soil carbon was also determined through the natural abundance of soil and biomass 13C. In T, NPK and M changes in soil carbon at 0-40cm were -0.2, +0.2 and +1.3 t C ha-1 yr-1, with residue carbon amounting to 3.5, 6.4 and 10.0 t C ha-1 yr-1, respectively. After 12 years of experimentation, carbon originating from maize in litter-plus-soil (0-40 cm) represented less than 4% of both total carbon and overall maize residue carbon. In contrast, carbon originating from mucuna in litter-plus-soil represented more than 50% of both total carbon and overall mucuna residue carbon in M, possibly due to accelerated mineralization of native soil carbon (priming effect) and slow mulch decomposition. Carbon originating from weeds in litter-plus-soil represented c. 10% of both total carbon and overall weed residue carbon in T and NPK. Thus mucuna mulch was very effective in promoting carbon sequestration in the soil studied. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/531773/1/531773.pdf text Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1111/j.1475-2743.2004.tb00363.x 10.1111/j.1475-2743.2004.tb00363.x info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1475-2743.2004.tb00363.x info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1111/j.1475-2743.2004.tb00363.x |
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P35 - Fertilité du sol F08 - Systèmes et modes de culture Mucuna pruriens Zea mays plante de couverture Acrisol fertilité du sol carbone http://aims.fao.org/aos/agrovoc/c_4971 http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_1936 http://aims.fao.org/aos/agrovoc/c_101 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_875 P35 - Fertilité du sol F08 - Systèmes et modes de culture Mucuna pruriens Zea mays plante de couverture Acrisol fertilité du sol carbone http://aims.fao.org/aos/agrovoc/c_4971 http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_1936 http://aims.fao.org/aos/agrovoc/c_101 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_875 |
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P35 - Fertilité du sol F08 - Systèmes et modes de culture Mucuna pruriens Zea mays plante de couverture Acrisol fertilité du sol carbone http://aims.fao.org/aos/agrovoc/c_4971 http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_1936 http://aims.fao.org/aos/agrovoc/c_101 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_875 P35 - Fertilité du sol F08 - Systèmes et modes de culture Mucuna pruriens Zea mays plante de couverture Acrisol fertilité du sol carbone http://aims.fao.org/aos/agrovoc/c_4971 http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_1936 http://aims.fao.org/aos/agrovoc/c_101 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_875 Barthès, Bernard Azontonde, Anastase Blanchart, Eric Girardin, Cyril Villenave, Cécile Lesaint, Sophie Oliver, Robert Feller, Christian Effect of a legume cover crop Mucuna pruriens var. utilis on soil carbon in an ultisol under maize cultivation in southern Benin |
description |
Long term fallow is no longer possible in densely populated tropical areas, but legume cover crops can help maintain soil fertility. Our work aimed to study changes in soil carbon in a sandy loam Ultisol in Benin, which involved a 12-year experiment on three maize cropping systems under manual tillage: traditional no-input cultivation (T), mineral fertilized cultivation (NPK), and association with Mucuna pruriens (M). The origin of soil carbon was also determined through the natural abundance of soil and biomass 13C. In T, NPK and M changes in soil carbon at 0-40cm were -0.2, +0.2 and +1.3 t C ha-1 yr-1, with residue carbon amounting to 3.5, 6.4 and 10.0 t C ha-1 yr-1, respectively. After 12 years of experimentation, carbon originating from maize in litter-plus-soil (0-40 cm) represented less than 4% of both total carbon and overall maize residue carbon. In contrast, carbon originating from mucuna in litter-plus-soil represented more than 50% of both total carbon and overall mucuna residue carbon in M, possibly due to accelerated mineralization of native soil carbon (priming effect) and slow mulch decomposition. Carbon originating from weeds in litter-plus-soil represented c. 10% of both total carbon and overall weed residue carbon in T and NPK. Thus mucuna mulch was very effective in promoting carbon sequestration in the soil studied. |
format |
article |
topic_facet |
P35 - Fertilité du sol F08 - Systèmes et modes de culture Mucuna pruriens Zea mays plante de couverture Acrisol fertilité du sol carbone http://aims.fao.org/aos/agrovoc/c_4971 http://aims.fao.org/aos/agrovoc/c_8504 http://aims.fao.org/aos/agrovoc/c_1936 http://aims.fao.org/aos/agrovoc/c_101 http://aims.fao.org/aos/agrovoc/c_7170 http://aims.fao.org/aos/agrovoc/c_1301 http://aims.fao.org/aos/agrovoc/c_875 |
author |
Barthès, Bernard Azontonde, Anastase Blanchart, Eric Girardin, Cyril Villenave, Cécile Lesaint, Sophie Oliver, Robert Feller, Christian |
author_facet |
Barthès, Bernard Azontonde, Anastase Blanchart, Eric Girardin, Cyril Villenave, Cécile Lesaint, Sophie Oliver, Robert Feller, Christian |
author_sort |
Barthès, Bernard |
title |
Effect of a legume cover crop Mucuna pruriens var. utilis on soil carbon in an ultisol under maize cultivation in southern Benin |
title_short |
Effect of a legume cover crop Mucuna pruriens var. utilis on soil carbon in an ultisol under maize cultivation in southern Benin |
title_full |
Effect of a legume cover crop Mucuna pruriens var. utilis on soil carbon in an ultisol under maize cultivation in southern Benin |
title_fullStr |
Effect of a legume cover crop Mucuna pruriens var. utilis on soil carbon in an ultisol under maize cultivation in southern Benin |
title_full_unstemmed |
Effect of a legume cover crop Mucuna pruriens var. utilis on soil carbon in an ultisol under maize cultivation in southern Benin |
title_sort |
effect of a legume cover crop mucuna pruriens var. utilis on soil carbon in an ultisol under maize cultivation in southern benin |
url |
http://agritrop.cirad.fr/531773/ http://agritrop.cirad.fr/531773/1/531773.pdf |
work_keys_str_mv |
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1792496432617357312 |