<b>Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biome
The objective of this study was to evaluate the forms of iron extracted as sodium dithionite-citrate-bicarbonate (Fed), acid ammonium oxalate (Feo) and sodium pyrophosphate (Fep) and the relationship between these variables and the total organic carbon content and maximum adsorption capacity of P (M...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Eduem (Editora da Universidade Estadual de Maringá)
2014-11-01
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| Series: | Acta Scientiarum: Agronomy |
| Subjects: | |
| Online Access: | http://186.233.154.254/ojs/index.php/ActaSciAgron/article/view/17686 |
| _version_ | 1828758722826993664 |
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| author | Marcos Gervasio Pereira Roni Fernandes Guareschi Adriano Perin |
| author_facet | Marcos Gervasio Pereira Roni Fernandes Guareschi Adriano Perin |
| author_sort | Marcos Gervasio Pereira |
| collection | DOAJ |
| description | The objective of this study was to evaluate the forms of iron extracted as sodium dithionite-citrate-bicarbonate (Fed), acid ammonium oxalate (Feo) and sodium pyrophosphate (Fep) and the relationship between these variables and the total organic carbon content and maximum adsorption capacity of P (MACP). The areas selected for this study had been using a no-tillage system (NTS) for varying periods of time: 3 years (NTS3), 15 years (NTS15) and 20 years (NTS20). These areas were compared with an area of native ‘Cerrado’ (CE) and a pasture area planted with Brachiaria decumbens (PA). The soil of the areas studied was classified as dystrophic oxisol. In each area, samples were collected at 0–5 cm and 5–10 cm. A correlation was observed between the C content and the different forms of Fe in the areas studied. There was a significant positive correlation between the carbon content and the forms of iron (Feo, Feo/Fed and Fep) and a negative correlation with the level of Fed. The areas of CE and PA had the highest MACP, which diminished as the amount of time of NTS use increased. |
| first_indexed | 2024-12-11T00:46:18Z |
| format | Article |
| id | doaj.art-0ab38d3440d2487c8b7b83a2fab7eb97 |
| institution | Directory Open Access Journal |
| issn | 1679-9275 1807-8621 |
| language | English |
| last_indexed | 2024-12-11T00:46:18Z |
| publishDate | 2014-11-01 |
| publisher | Eduem (Editora da Universidade Estadual de Maringá) |
| record_format | Article |
| series | Acta Scientiarum: Agronomy |
| spelling | doaj.art-0ab38d3440d2487c8b7b83a2fab7eb972022-12-22T01:26:46ZengEduem (Editora da Universidade Estadual de Maringá)Acta Scientiarum: Agronomy1679-92751807-86212014-11-0137110911610.4025/actasciagron.v37i1.1768611344<b>Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biomeMarcos Gervasio PereiraRoni Fernandes GuareschiAdriano PerinThe objective of this study was to evaluate the forms of iron extracted as sodium dithionite-citrate-bicarbonate (Fed), acid ammonium oxalate (Feo) and sodium pyrophosphate (Fep) and the relationship between these variables and the total organic carbon content and maximum adsorption capacity of P (MACP). The areas selected for this study had been using a no-tillage system (NTS) for varying periods of time: 3 years (NTS3), 15 years (NTS15) and 20 years (NTS20). These areas were compared with an area of native ‘Cerrado’ (CE) and a pasture area planted with Brachiaria decumbens (PA). The soil of the areas studied was classified as dystrophic oxisol. In each area, samples were collected at 0–5 cm and 5–10 cm. A correlation was observed between the C content and the different forms of Fe in the areas studied. There was a significant positive correlation between the carbon content and the forms of iron (Feo, Feo/Fed and Fep) and a negative correlation with the level of Fed. The areas of CE and PA had the highest MACP, which diminished as the amount of time of NTS use increased.http://186.233.154.254/ojs/index.php/ActaSciAgron/article/view/17686soil organic matterpastureiron oxidesoxisol |
| spellingShingle | Marcos Gervasio Pereira Roni Fernandes Guareschi Adriano Perin <b>Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biome Acta Scientiarum: Agronomy soil organic matter pasture iron oxides oxisol |
| title | <b>Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biome |
| title_full | <b>Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biome |
| title_fullStr | <b>Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biome |
| title_full_unstemmed | <b>Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biome |
| title_short | <b>Adsorption of P and forms of iron in no-tillage areas in the ‘Cerrado’ biome |
| title_sort | b adsorption of p and forms of iron in no tillage areas in the cerrado biome |
| topic | soil organic matter pasture iron oxides oxisol |
| url | http://186.233.154.254/ojs/index.php/ActaSciAgron/article/view/17686 |
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