Short-Term PE Generation Processes in the Soils of a Farmer Plots Network in the Madagascar Highlands: Actors and Drivers
Carbon sequestration in agricultural soils, through the accumulation of high-quality organic matter, represents great potential to mitigate climate change and simultaneously improve soil fertility. Such a challenge is particularly important and relevant in developing tropical countries like Madagasc...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
|
| Series: | Microbiology Research |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2036-7481/14/4/117 |
| _version_ | 1827574155830099968 |
|---|---|
| author | Kanto Razanamalala Tantely Razafimbelo Pierre-Alain Maron Lionel Ranjard Nicolas Chemidlin Prévost-Bouré Samuel Dequiedt Thierry Becquer Jean Trap Eric Blanchart Laetitia Bernard |
| author_facet | Kanto Razanamalala Tantely Razafimbelo Pierre-Alain Maron Lionel Ranjard Nicolas Chemidlin Prévost-Bouré Samuel Dequiedt Thierry Becquer Jean Trap Eric Blanchart Laetitia Bernard |
| author_sort | Kanto Razanamalala |
| collection | DOAJ |
| description | Carbon sequestration in agricultural soils, through the accumulation of high-quality organic matter, represents great potential to mitigate climate change and simultaneously improve soil fertility. Such a challenge is particularly important and relevant in developing tropical countries like Madagascar, where soil carbon storage is vulnerable to climatic variations and where fertilization is generally applied through amendments in organic matter of various origins. The priming effect (PE) is considered here as the stimulation of the mineralization of soil organic matter (SOM) by a supply of fresh organic matter (FOM). PE results from different microbial processes driven by specific biotic and abiotic parameters. Depending on the processes involved, it has been suggested that PE could either counteract SOM accumulation or promote it. The objective of the present study was to explore the relationships between certain agricultural practices (type of crop, quality of fertilization, association with trees), the potential intensity of PE, as well as several abiotic (texture, quantity and quality SOM, nutrient enrichment) a1nd biotic (biomass and phylogenetic composition of microbial communities) factors which have been proposed in the literature as specific determinants of the different PE generation mechanisms. The soils for this study come from a network of farms in a commune in the Highlands of Madagascar. The PE, generated by a supply of <sup>13</sup>C-enriched wheat straw, could not directly correlate with agricultural treatments. However, several indirect correlations could be found via several specific abiotic and microbial determinants that are discussed in terms of soil fertility restoration. |
| first_indexed | 2024-03-08T20:32:16Z |
| format | Article |
| id | doaj.art-c143b1b6f6ad443986586331da448095 |
| institution | Directory Open Access Journal |
| issn | 2036-7481 |
| language | English |
| last_indexed | 2024-03-08T20:32:16Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Microbiology Research |
| spelling | doaj.art-c143b1b6f6ad443986586331da4480952023-12-22T14:25:05ZengMDPI AGMicrobiology Research2036-74812023-10-011441702171910.3390/microbiolres14040117Short-Term PE Generation Processes in the Soils of a Farmer Plots Network in the Madagascar Highlands: Actors and DriversKanto Razanamalala0Tantely Razafimbelo1Pierre-Alain Maron2Lionel Ranjard3Nicolas Chemidlin Prévost-Bouré4Samuel Dequiedt5Thierry Becquer6Jean Trap7Eric Blanchart8Laetitia Bernard9Laboratoire des Radio-Isotopes, Université d’Antananarivo, BP 3383, Route d’Andraisoro, Antananarivo 101, MadagascarLaboratoire des Radio-Isotopes, Université d’Antananarivo, BP 3383, Route d’Andraisoro, Antananarivo 101, MadagascarAgroécologie, INRAE, AgroSup Dijon, Université Bourgogne Franche-Comté, 21000 Dijon, FranceAgroécologie, INRAE, AgroSup Dijon, Université Bourgogne Franche-Comté, 21000 Dijon, FranceAgroécologie, INRAE, AgroSup Dijon, Université Bourgogne Franche-Comté, 21000 Dijon, FranceAgroécologie, INRAE, AgroSup Dijon, Université Bourgogne Franche-Comté, 21000 Dijon, FranceEco&Sols, Institut Agro, Université de Montpellier, IRD, INRAE, CIRAD, 34394 Montpellier, FranceEco&Sols, Institut Agro, Université de Montpellier, IRD, INRAE, CIRAD, 34394 Montpellier, FranceLaboratoire des Radio-Isotopes, Université d’Antananarivo, BP 3383, Route d’Andraisoro, Antananarivo 101, MadagascarLaboratoire des Radio-Isotopes, Université d’Antananarivo, BP 3383, Route d’Andraisoro, Antananarivo 101, MadagascarCarbon sequestration in agricultural soils, through the accumulation of high-quality organic matter, represents great potential to mitigate climate change and simultaneously improve soil fertility. Such a challenge is particularly important and relevant in developing tropical countries like Madagascar, where soil carbon storage is vulnerable to climatic variations and where fertilization is generally applied through amendments in organic matter of various origins. The priming effect (PE) is considered here as the stimulation of the mineralization of soil organic matter (SOM) by a supply of fresh organic matter (FOM). PE results from different microbial processes driven by specific biotic and abiotic parameters. Depending on the processes involved, it has been suggested that PE could either counteract SOM accumulation or promote it. The objective of the present study was to explore the relationships between certain agricultural practices (type of crop, quality of fertilization, association with trees), the potential intensity of PE, as well as several abiotic (texture, quantity and quality SOM, nutrient enrichment) a1nd biotic (biomass and phylogenetic composition of microbial communities) factors which have been proposed in the literature as specific determinants of the different PE generation mechanisms. The soils for this study come from a network of farms in a commune in the Highlands of Madagascar. The PE, generated by a supply of <sup>13</sup>C-enriched wheat straw, could not directly correlate with agricultural treatments. However, several indirect correlations could be found via several specific abiotic and microbial determinants that are discussed in terms of soil fertility restoration.https://www.mdpi.com/2036-7481/14/4/117Ferralsolsorganic fertilizationpriming effectsmallholder farmingC sequestrationsoil organic matter |
| spellingShingle | Kanto Razanamalala Tantely Razafimbelo Pierre-Alain Maron Lionel Ranjard Nicolas Chemidlin Prévost-Bouré Samuel Dequiedt Thierry Becquer Jean Trap Eric Blanchart Laetitia Bernard Short-Term PE Generation Processes in the Soils of a Farmer Plots Network in the Madagascar Highlands: Actors and Drivers Microbiology Research Ferralsols organic fertilization priming effect smallholder farming C sequestration soil organic matter |
| title | Short-Term PE Generation Processes in the Soils of a Farmer Plots Network in the Madagascar Highlands: Actors and Drivers |
| title_full | Short-Term PE Generation Processes in the Soils of a Farmer Plots Network in the Madagascar Highlands: Actors and Drivers |
| title_fullStr | Short-Term PE Generation Processes in the Soils of a Farmer Plots Network in the Madagascar Highlands: Actors and Drivers |
| title_full_unstemmed | Short-Term PE Generation Processes in the Soils of a Farmer Plots Network in the Madagascar Highlands: Actors and Drivers |
| title_short | Short-Term PE Generation Processes in the Soils of a Farmer Plots Network in the Madagascar Highlands: Actors and Drivers |
| title_sort | short term pe generation processes in the soils of a farmer plots network in the madagascar highlands actors and drivers |
| topic | Ferralsols organic fertilization priming effect smallholder farming C sequestration soil organic matter |
| url | https://www.mdpi.com/2036-7481/14/4/117 |
| work_keys_str_mv | AT kantorazanamalala shorttermpegenerationprocessesinthesoilsofafarmerplotsnetworkinthemadagascarhighlandsactorsanddrivers AT tantelyrazafimbelo shorttermpegenerationprocessesinthesoilsofafarmerplotsnetworkinthemadagascarhighlandsactorsanddrivers AT pierrealainmaron shorttermpegenerationprocessesinthesoilsofafarmerplotsnetworkinthemadagascarhighlandsactorsanddrivers AT lionelranjard shorttermpegenerationprocessesinthesoilsofafarmerplotsnetworkinthemadagascarhighlandsactorsanddrivers AT nicolaschemidlinprevostboure shorttermpegenerationprocessesinthesoilsofafarmerplotsnetworkinthemadagascarhighlandsactorsanddrivers AT samueldequiedt shorttermpegenerationprocessesinthesoilsofafarmerplotsnetworkinthemadagascarhighlandsactorsanddrivers AT thierrybecquer shorttermpegenerationprocessesinthesoilsofafarmerplotsnetworkinthemadagascarhighlandsactorsanddrivers AT jeantrap shorttermpegenerationprocessesinthesoilsofafarmerplotsnetworkinthemadagascarhighlandsactorsanddrivers AT ericblanchart shorttermpegenerationprocessesinthesoilsofafarmerplotsnetworkinthemadagascarhighlandsactorsanddrivers AT laetitiabernard shorttermpegenerationprocessesinthesoilsofafarmerplotsnetworkinthemadagascarhighlandsactorsanddrivers |