Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles
This work analyzes the direct effect of soil management practices on soil microbial communities, which may affect soil productivity and sustainability. The experimental design consisted of two tillage treatments: reduced tillage (RT) and zero tillage (ZT), and three crop rotation treatments: continu...
| Autores principales: | , , , , , , |
|---|---|
| Formato: | Artículo |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2021
|
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/9948 https://www.sciencedirect.com/science/article/pii/S0167198708001931 https://doi.org/10.1016/j.still.2008.10.008 |
| _version_ | 1855484496342679552 |
|---|---|
| author | Meriles, José M. Vargas Gil, Silvina Conforto, Erica Cinthia Figoni, Gervasio Jose Lovera, Edgar Francisco March, Guillermo Juan Guzmán, C.A. |
| author_browse | Conforto, Erica Cinthia Figoni, Gervasio Jose Guzmán, C.A. Lovera, Edgar Francisco March, Guillermo Juan Meriles, José M. Vargas Gil, Silvina |
| author_facet | Meriles, José M. Vargas Gil, Silvina Conforto, Erica Cinthia Figoni, Gervasio Jose Lovera, Edgar Francisco March, Guillermo Juan Guzmán, C.A. |
| author_sort | Meriles, José M. |
| collection | INTA Digital |
| description | This work analyzes the direct effect of soil management practices on soil microbial communities, which may affect soil productivity and sustainability. The experimental design consisted of two tillage treatments: reduced tillage (RT) and zero tillage (ZT), and three crop rotation treatments: continuous soybean (SS), corn–soybean (CS), and soybean–corn (SC). Soil samples were taken at soybean planting and harvest. The following quantifications were performed: soil microbial populations by soil dilution plate technique on selective and semi-selective culture media; microbial respiration and microbial biomass by chloroform fumigation-extraction; microbial activity by fluorescein diacetate hydrolysis; and fatty acid methyl ester (FAME) profiles. Soil chemical parameters were also quantified. Soil organic matter content was significantly lower in RT and SS sequence crops, whereas soil pH and total N were significantly higher in CS and SC sequence crops. Trichoderma and Gliocladium populations were lower under RTSS and ZTSS treatments. Except in a few cases, soil microbial respiration, biomass and activity were higher under zero tillage than under reduced tillage, both at planting and harvest sampling times. Multivariate analyses of FAMEs clearly separated both RT and ZT management practices at each sampling time; however, separation of sequence crops was less evident. In our experiments ZT treatment had highest proportion of 10Me 16:0, an actinomycetes biomarker, and 16:1ω9 and 18:1ω7, two fatty acids associated with organic matter content and substrate availability. In contrast, RT treatment had highest content of branched biomarkers (i15:0 and i16:0) and of cy19:0, fatty acids associated with cell stasis and/or stress. As cultural practices can influence soil microbial populations, it is important to analyze the effect that they produce on biological parameters, with the aim of conserving soil richness over time. Thus, in a soybean-based cropping system, appropriate crop management is necessary for a sustainable productivity without reducing soil quality. |
| format | Artículo |
| id | INTA9948 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA99482021-08-04T10:59:33Z Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles Meriles, José M. Vargas Gil, Silvina Conforto, Erica Cinthia Figoni, Gervasio Jose Lovera, Edgar Francisco March, Guillermo Juan Guzmán, C.A. Soil Microorganisms Fungi Cropping Systems Soybeans Bacteria Microorganismos del Suelo Hongos Sistemas de Cultivo Soja Soil Microflora Microbial Diversity This work analyzes the direct effect of soil management practices on soil microbial communities, which may affect soil productivity and sustainability. The experimental design consisted of two tillage treatments: reduced tillage (RT) and zero tillage (ZT), and three crop rotation treatments: continuous soybean (SS), corn–soybean (CS), and soybean–corn (SC). Soil samples were taken at soybean planting and harvest. The following quantifications were performed: soil microbial populations by soil dilution plate technique on selective and semi-selective culture media; microbial respiration and microbial biomass by chloroform fumigation-extraction; microbial activity by fluorescein diacetate hydrolysis; and fatty acid methyl ester (FAME) profiles. Soil chemical parameters were also quantified. Soil organic matter content was significantly lower in RT and SS sequence crops, whereas soil pH and total N were significantly higher in CS and SC sequence crops. Trichoderma and Gliocladium populations were lower under RTSS and ZTSS treatments. Except in a few cases, soil microbial respiration, biomass and activity were higher under zero tillage than under reduced tillage, both at planting and harvest sampling times. Multivariate analyses of FAMEs clearly separated both RT and ZT management practices at each sampling time; however, separation of sequence crops was less evident. In our experiments ZT treatment had highest proportion of 10Me 16:0, an actinomycetes biomarker, and 16:1ω9 and 18:1ω7, two fatty acids associated with organic matter content and substrate availability. In contrast, RT treatment had highest content of branched biomarkers (i15:0 and i16:0) and of cy19:0, fatty acids associated with cell stasis and/or stress. As cultural practices can influence soil microbial populations, it is important to analyze the effect that they produce on biological parameters, with the aim of conserving soil richness over time. Thus, in a soybean-based cropping system, appropriate crop management is necessary for a sustainable productivity without reducing soil quality. Instituto de Patología Vegetal Fil: Meriles, José M. Universidad Nacional de Córdoba. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Multidisciplinario de Biología Vegetal (IMBIV); Argentina Fil: Meriles, José M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencia y Tecnología de los Alimentos; Argentina Fil: Vargas Gil, Silvina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fitopatología y Fisiología Vegetal; Argentina Fil: Conforto, Erica Cinthia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fitopatología y Fisiología Vegetal; Argentina Fil: Figoni, Gervasio Jose. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fitopatología y Fisiología Vegetal; Argentina Fil: Lovera, Edgar Francisco. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina Fil: March, Guillermo Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fitopatología y Fisiología Vegetal; Argentina Fil: Guzmán, C.A. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Ciencia y Tecnología de los Alimentos; Argentina 2021-08-04T10:46:57Z 2021-08-04T10:46:57Z 2008-12-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/9948 https://www.sciencedirect.com/science/article/pii/S0167198708001931 0167-1987 https://doi.org/10.1016/j.still.2008.10.008 eng info:eu-repo/semantics/restrictedAccess application/pdf Elsevier Soil and Tillage Research 103 (2) : 271-281 (May 2009) |
| spellingShingle | Soil Microorganisms Fungi Cropping Systems Soybeans Bacteria Microorganismos del Suelo Hongos Sistemas de Cultivo Soja Soil Microflora Microbial Diversity Meriles, José M. Vargas Gil, Silvina Conforto, Erica Cinthia Figoni, Gervasio Jose Lovera, Edgar Francisco March, Guillermo Juan Guzmán, C.A. Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles |
| title | Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles |
| title_full | Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles |
| title_fullStr | Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles |
| title_full_unstemmed | Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles |
| title_short | Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles |
| title_sort | soil microbial communities under different soybean cropping systems characterization of microbial population dynamics soil microbial activity microbial biomass and fatty acid profiles |
| topic | Soil Microorganisms Fungi Cropping Systems Soybeans Bacteria Microorganismos del Suelo Hongos Sistemas de Cultivo Soja Soil Microflora Microbial Diversity |
| url | http://hdl.handle.net/20.500.12123/9948 https://www.sciencedirect.com/science/article/pii/S0167198708001931 https://doi.org/10.1016/j.still.2008.10.008 |
| work_keys_str_mv | AT merilesjosem soilmicrobialcommunitiesunderdifferentsoybeancroppingsystemscharacterizationofmicrobialpopulationdynamicssoilmicrobialactivitymicrobialbiomassandfattyacidprofiles AT vargasgilsilvina soilmicrobialcommunitiesunderdifferentsoybeancroppingsystemscharacterizationofmicrobialpopulationdynamicssoilmicrobialactivitymicrobialbiomassandfattyacidprofiles AT confortoericacinthia soilmicrobialcommunitiesunderdifferentsoybeancroppingsystemscharacterizationofmicrobialpopulationdynamicssoilmicrobialactivitymicrobialbiomassandfattyacidprofiles AT figonigervasiojose soilmicrobialcommunitiesunderdifferentsoybeancroppingsystemscharacterizationofmicrobialpopulationdynamicssoilmicrobialactivitymicrobialbiomassandfattyacidprofiles AT loveraedgarfrancisco soilmicrobialcommunitiesunderdifferentsoybeancroppingsystemscharacterizationofmicrobialpopulationdynamicssoilmicrobialactivitymicrobialbiomassandfattyacidprofiles AT marchguillermojuan soilmicrobialcommunitiesunderdifferentsoybeancroppingsystemscharacterizationofmicrobialpopulationdynamicssoilmicrobialactivitymicrobialbiomassandfattyacidprofiles AT guzmanca soilmicrobialcommunitiesunderdifferentsoybeancroppingsystemscharacterizationofmicrobialpopulationdynamicssoilmicrobialactivitymicrobialbiomassandfattyacidprofiles |