Soil structure and greenhouse gas production differences between row and interrow positions under no-tillage
No-tillage in Brazil is an efficient agricultural system that improves crop productivity whilst controlling erosion caused to the soil by degradation. However, there is some concern regarding soil compaction. Our objective was to determine whether the function of soil structure in sustaining crop gr...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Universidade de São Paulo
2014-04-01
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| Series: | Scientia Agricola |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000200011&lng=en&tlng=en |
| _version_ | 1819071332314251264 |
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| author | Alvaro Pires da Silva Bruce C. Ball Cássio Antonio Tormena Neyde Fabiola Balarezo Giarola Rachel Muylaert Locks Guimarães |
| author_facet | Alvaro Pires da Silva Bruce C. Ball Cássio Antonio Tormena Neyde Fabiola Balarezo Giarola Rachel Muylaert Locks Guimarães |
| author_sort | Alvaro Pires da Silva |
| collection | DOAJ |
| description | No-tillage in Brazil is an efficient agricultural system that improves crop productivity whilst controlling erosion caused to the soil by degradation. However, there is some concern regarding soil compaction. Our objective was to determine whether the function of soil structure in sustaining crop growth was dependent on row and interrow positions in long-term no-tillage. We took soil samples from a field in a commercial farm under long-term no-tillage since 1979 on a clayey Oxisol in Southern Brazil. We assessed soil physical quality using the revised Peerlkamp technique and measured bulk density, air-filled porosity and air permeability of intact soil cores. Samples were incubated to assess in vitro N2O and CO2 production. The soil physical and structural properties showed consistent differences between interrow and row positions, where the properties measured were more favorable. The revised Peerlkamp technique proved as efficient as quantitative parameters in discriminating treatment differences. Overall, soil physical conditions in the interrow were less favourable than in the row. Pore continuity did not vary as regards position. This may explain why row position did not influence in vitro N2O and CO2 production. Soil physical quality under no-tillage system is enhanced, at least in the short term, by superficial disturbances in the row as a result of the action of the coulters of the no-tillage seeder. |
| first_indexed | 2024-12-21T17:20:09Z |
| format | Article |
| id | doaj.art-47a6c09bd9b64317b46088866479bfb6 |
| institution | Directory Open Access Journal |
| issn | 1678-992X |
| language | English |
| last_indexed | 2024-12-21T17:20:09Z |
| publishDate | 2014-04-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Scientia Agricola |
| spelling | doaj.art-47a6c09bd9b64317b46088866479bfb62022-12-21T18:56:11ZengUniversidade de São PauloScientia Agricola1678-992X2014-04-0171215716210.1590/S0103-90162014000200011S0103-90162014000200011Soil structure and greenhouse gas production differences between row and interrow positions under no-tillageAlvaro Pires da Silva0Bruce C. Ball1Cássio Antonio Tormena2Neyde Fabiola Balarezo Giarola3Rachel Muylaert Locks Guimarães4Universidade de São PauloScotland's Rural CollegeUniversidade Estadual de MaringáUniversidade Estadual de Ponta GrossaUniversidade Tecnológica Federal do ParanáNo-tillage in Brazil is an efficient agricultural system that improves crop productivity whilst controlling erosion caused to the soil by degradation. However, there is some concern regarding soil compaction. Our objective was to determine whether the function of soil structure in sustaining crop growth was dependent on row and interrow positions in long-term no-tillage. We took soil samples from a field in a commercial farm under long-term no-tillage since 1979 on a clayey Oxisol in Southern Brazil. We assessed soil physical quality using the revised Peerlkamp technique and measured bulk density, air-filled porosity and air permeability of intact soil cores. Samples were incubated to assess in vitro N2O and CO2 production. The soil physical and structural properties showed consistent differences between interrow and row positions, where the properties measured were more favorable. The revised Peerlkamp technique proved as efficient as quantitative parameters in discriminating treatment differences. Overall, soil physical conditions in the interrow were less favourable than in the row. Pore continuity did not vary as regards position. This may explain why row position did not influence in vitro N2O and CO2 production. Soil physical quality under no-tillage system is enhanced, at least in the short term, by superficial disturbances in the row as a result of the action of the coulters of the no-tillage seeder.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000200011&lng=en&tlng=en |
| spellingShingle | Alvaro Pires da Silva Bruce C. Ball Cássio Antonio Tormena Neyde Fabiola Balarezo Giarola Rachel Muylaert Locks Guimarães Soil structure and greenhouse gas production differences between row and interrow positions under no-tillage Scientia Agricola |
| title | Soil structure and greenhouse gas production differences between row and interrow positions under no-tillage |
| title_full | Soil structure and greenhouse gas production differences between row and interrow positions under no-tillage |
| title_fullStr | Soil structure and greenhouse gas production differences between row and interrow positions under no-tillage |
| title_full_unstemmed | Soil structure and greenhouse gas production differences between row and interrow positions under no-tillage |
| title_short | Soil structure and greenhouse gas production differences between row and interrow positions under no-tillage |
| title_sort | soil structure and greenhouse gas production differences between row and interrow positions under no tillage |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000200011&lng=en&tlng=en |
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