Effect of cover crops on microbial community structure and related enzyme activities and macronutrient availability
Continuous monoculture in major agricultural regions has been characterized by the loss of fertility, increased soil erosion and surface runoff. Thus, the inclusion of cover crops (CC) is a promising option aimed at better preserving the sustainable production of agricultural systems. The objective...
| Autores principales: | , , , , , , |
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| Formato: | info:eu-repo/semantics/article |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/893 http://www.sciencedirect.com/science/article/pii/S1164556316300723?via%3Dihub https://doi.org/10.1016/j.ejsobi.2016.07.002 |
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| author | Chavarria, Diego N. Verdenelli, Romina Aylén Serri, Dannae Lilia Restovich, Silvina Beatriz Andriulo, Adrian Enrique Meriles, José Manuel Vargas Gil, Silvina |
| author_browse | Andriulo, Adrian Enrique Chavarria, Diego N. Meriles, José Manuel Restovich, Silvina Beatriz Serri, Dannae Lilia Vargas Gil, Silvina Verdenelli, Romina Aylén |
| author_facet | Chavarria, Diego N. Verdenelli, Romina Aylén Serri, Dannae Lilia Restovich, Silvina Beatriz Andriulo, Adrian Enrique Meriles, José Manuel Vargas Gil, Silvina |
| author_sort | Chavarria, Diego N. |
| collection | INTA Digital |
| description | Continuous monoculture in major agricultural regions has been characterized by the loss of fertility, increased soil erosion and surface runoff. Thus, the inclusion of cover crops (CC) is a promising option aimed at better preserving the sustainable production of agricultural systems. The objective of this study was to assess the short-term effect of CC on soil microbial community structure and related enzyme activities and macronutrient availability. Species tested as CC were: oat (Avena sativa L.), vetch (Vicia sativa L.) and radish (Raphanus sativus L.), which were sown in two species mixtures, oat/radish (CC1) and oat/radish/vetch (CC2), with soybean monoculture and soybean/corn being the cash crops. The field trial was performed under no-tillage, and soil sampling was carried out in 2013 and 2014. The analysis of soil phospholipid fatty acid (PLFA) showed an increase of total bacterial PLFA and Gram-positive PLFA under CC treatments, being on average 6.8% significantly higher in CC2 and CC1 than in the control treatment. In addition, soil enzyme activities (esterase activity, dehydrogenase activity and acid phosphatase activity) were on average 20% higher in plots under CC in comparison to control treatments. The total N was significantly higher after CC2 treatment (3.13 mg g−1) than in either the CC1 (2.00 mg g−1) or control (2.19 mg g−1). This research revealed that the inclusion of CC mixtures in crop rotation produced an increase in bacterial PLFA, in particular Gram-positive bacteria, in the short term. These changes were related to soil enzyme activities and to the availability of the main macronutrients N and P, with a CC mixture including oat/radish/vetch being highly recommended not only to improve soil biological processes but also to provide additional N to the cash crop. |
| format | info:eu-repo/semantics/article |
| id | INTA893 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA8932018-06-21T15:08:40Z Effect of cover crops on microbial community structure and related enzyme activities and macronutrient availability Chavarria, Diego N. Verdenelli, Romina Aylén Serri, Dannae Lilia Restovich, Silvina Beatriz Andriulo, Adrian Enrique Meriles, José Manuel Vargas Gil, Silvina Plantas de Cobertura Suelo Actividad Enzimática Disponibilidad de Nutrientes Cover Plants Soil Enzyme Activity Nutrient Availability Macronutrientes Continuous monoculture in major agricultural regions has been characterized by the loss of fertility, increased soil erosion and surface runoff. Thus, the inclusion of cover crops (CC) is a promising option aimed at better preserving the sustainable production of agricultural systems. The objective of this study was to assess the short-term effect of CC on soil microbial community structure and related enzyme activities and macronutrient availability. Species tested as CC were: oat (Avena sativa L.), vetch (Vicia sativa L.) and radish (Raphanus sativus L.), which were sown in two species mixtures, oat/radish (CC1) and oat/radish/vetch (CC2), with soybean monoculture and soybean/corn being the cash crops. The field trial was performed under no-tillage, and soil sampling was carried out in 2013 and 2014. The analysis of soil phospholipid fatty acid (PLFA) showed an increase of total bacterial PLFA and Gram-positive PLFA under CC treatments, being on average 6.8% significantly higher in CC2 and CC1 than in the control treatment. In addition, soil enzyme activities (esterase activity, dehydrogenase activity and acid phosphatase activity) were on average 20% higher in plots under CC in comparison to control treatments. The total N was significantly higher after CC2 treatment (3.13 mg g−1) than in either the CC1 (2.00 mg g−1) or control (2.19 mg g−1). This research revealed that the inclusion of CC mixtures in crop rotation produced an increase in bacterial PLFA, in particular Gram-positive bacteria, in the short term. These changes were related to soil enzyme activities and to the availability of the main macronutrients N and P, with a CC mixture including oat/radish/vetch being highly recommended not only to improve soil biological processes but also to provide additional N to the cash crop. EEA Pergamino Fil: Chavarria, Diego N. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina; Argentina Fil: Verdenelli, Romina Aylen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Serri, Dannae Lilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina Fil: Restovich, Silvina Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentina Fil: Andriulo, Adrian Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino; Argentina Fil: Meriles, Jose Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Vargas Gil, Silvina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina; Argentina 2017-08-03T14:41:26Z 2017-08-03T14:41:26Z 2016 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/893 http://www.sciencedirect.com/science/article/pii/S1164556316300723?via%3Dihub 1164-5563 https://doi.org/10.1016/j.ejsobi.2016.07.002 eng info:eu-repo/semantics/restrictedAccess application/pdf European journal of soil biology 76 : 74-82. (2016) |
| spellingShingle | Plantas de Cobertura Suelo Actividad Enzimática Disponibilidad de Nutrientes Cover Plants Soil Enzyme Activity Nutrient Availability Macronutrientes Chavarria, Diego N. Verdenelli, Romina Aylén Serri, Dannae Lilia Restovich, Silvina Beatriz Andriulo, Adrian Enrique Meriles, José Manuel Vargas Gil, Silvina Effect of cover crops on microbial community structure and related enzyme activities and macronutrient availability |
| title | Effect of cover crops on microbial community structure and related enzyme activities and macronutrient availability |
| title_full | Effect of cover crops on microbial community structure and related enzyme activities and macronutrient availability |
| title_fullStr | Effect of cover crops on microbial community structure and related enzyme activities and macronutrient availability |
| title_full_unstemmed | Effect of cover crops on microbial community structure and related enzyme activities and macronutrient availability |
| title_short | Effect of cover crops on microbial community structure and related enzyme activities and macronutrient availability |
| title_sort | effect of cover crops on microbial community structure and related enzyme activities and macronutrient availability |
| topic | Plantas de Cobertura Suelo Actividad Enzimática Disponibilidad de Nutrientes Cover Plants Soil Enzyme Activity Nutrient Availability Macronutrientes |
| url | http://hdl.handle.net/20.500.12123/893 http://www.sciencedirect.com/science/article/pii/S1164556316300723?via%3Dihub https://doi.org/10.1016/j.ejsobi.2016.07.002 |
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