Field spatial and temporal patterns of soil water content and bulk density changes
Soil water content (theta) and bulk density (rhos) greatly influence important soil and plant processes, such as water movement, soil compaction, soil aeration, and plant root system development. Spatial and temporal variability of theta and rhos during different periods of the year and different ph...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universidade de São Paulo
2006-02-01
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| Series: | Scientia Agricola |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000100009&tlng=en |
| _version_ | 1818951917046333440 |
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| author | Luís Carlos Timm Luiz Fernando Pires Renato Roveratti Robson Clayton Jacques Arthur Klaus Reichardt Júlio Cesar Martins de Oliveira Osny Oliveira Santos Bacchi |
| author_facet | Luís Carlos Timm Luiz Fernando Pires Renato Roveratti Robson Clayton Jacques Arthur Klaus Reichardt Júlio Cesar Martins de Oliveira Osny Oliveira Santos Bacchi |
| author_sort | Luís Carlos Timm |
| collection | DOAJ |
| description | Soil water content (theta) and bulk density (rhos) greatly influence important soil and plant processes, such as water movement, soil compaction, soil aeration, and plant root system development. Spatial and temporal variability of theta and rhos during different periods of the year and different phases of crops are of fundamental interest. This work involves the characterization of spatial and temporal patterns of theta and rhos during different climatic periods of year, aiming to verify whether there are significant temporal changes in rhos at the soil surface layer when submitted to wetting and drying cycles. The field experiment was carried out in a coffee plantation, Rhodic Kandiudalf soil, clayey texture. Using a neutron/gamma surface probe, theta and rhos were measured meter by meter along a 200 m spatial transect, along an interrow contour line. During the wet period there was no difference of spatial patterns of theta while during the dry period differences were observed, and can be associated to precipitation events. It was also observed that there are rhos temporal changes at the soil surface along the studied period as a consequence of the in situ wetting and drying cycles. |
| first_indexed | 2024-12-20T09:42:06Z |
| format | Article |
| id | doaj.art-00861478839b474d9d3aabc580f2d32e |
| institution | Directory Open Access Journal |
| issn | 1678-992X |
| language | English |
| last_indexed | 2024-12-20T09:42:06Z |
| publishDate | 2006-02-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Scientia Agricola |
| spelling | doaj.art-00861478839b474d9d3aabc580f2d32e2022-12-21T19:44:51ZengUniversidade de São PauloScientia Agricola1678-992X2006-02-016315564Field spatial and temporal patterns of soil water content and bulk density changesLuís Carlos Timm0Luiz Fernando Pires1Renato Roveratti2Robson Clayton Jacques Arthur3Klaus Reichardt4Júlio Cesar Martins de Oliveira5Osny Oliveira Santos Bacchi6UFPelUSPUSPUSPUSPEEPUSPSoil water content (theta) and bulk density (rhos) greatly influence important soil and plant processes, such as water movement, soil compaction, soil aeration, and plant root system development. Spatial and temporal variability of theta and rhos during different periods of the year and different phases of crops are of fundamental interest. This work involves the characterization of spatial and temporal patterns of theta and rhos during different climatic periods of year, aiming to verify whether there are significant temporal changes in rhos at the soil surface layer when submitted to wetting and drying cycles. The field experiment was carried out in a coffee plantation, Rhodic Kandiudalf soil, clayey texture. Using a neutron/gamma surface probe, theta and rhos were measured meter by meter along a 200 m spatial transect, along an interrow contour line. During the wet period there was no difference of spatial patterns of theta while during the dry period differences were observed, and can be associated to precipitation events. It was also observed that there are rhos temporal changes at the soil surface along the studied period as a consequence of the in situ wetting and drying cycles.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000100009&tlng=enneutron/gamma surface probewetting/drying cyclesspatial and temporal variability |
| spellingShingle | Luís Carlos Timm Luiz Fernando Pires Renato Roveratti Robson Clayton Jacques Arthur Klaus Reichardt Júlio Cesar Martins de Oliveira Osny Oliveira Santos Bacchi Field spatial and temporal patterns of soil water content and bulk density changes Scientia Agricola neutron/gamma surface probe wetting/drying cycles spatial and temporal variability |
| title | Field spatial and temporal patterns of soil water content and bulk density changes |
| title_full | Field spatial and temporal patterns of soil water content and bulk density changes |
| title_fullStr | Field spatial and temporal patterns of soil water content and bulk density changes |
| title_full_unstemmed | Field spatial and temporal patterns of soil water content and bulk density changes |
| title_short | Field spatial and temporal patterns of soil water content and bulk density changes |
| title_sort | field spatial and temporal patterns of soil water content and bulk density changes |
| topic | neutron/gamma surface probe wetting/drying cycles spatial and temporal variability |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000100009&tlng=en |
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