Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions
Soil organic matter (SOM) and phosphorus (P) fractions play a key role in sustaining the productivity of acid-savanna oxisols and are greatly influenced by tillage practices. In 1993, a long-term experiment on sustainable crop rotation and ley farming systems was initiated on a Colombian acid-savann...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Elsevier
2006
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/44189 |
| _version_ | 1855540954566492160 |
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| author | Basamba, T.A.A. Barrios, E. Amézquita Collazos, Edgar Rao, Idupulapati M. Singh, B.R. |
| author_browse | Amézquita Collazos, Edgar Barrios, E. Basamba, T.A.A. Rao, Idupulapati M. Singh, B.R. |
| author_facet | Basamba, T.A.A. Barrios, E. Amézquita Collazos, Edgar Rao, Idupulapati M. Singh, B.R. |
| author_sort | Basamba, T.A.A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Soil organic matter (SOM) and phosphorus (P) fractions play a key role in sustaining the productivity of acid-savanna oxisols and are greatly influenced by tillage practices. In 1993, a long-term experiment on sustainable crop rotation and ley farming systems was initiated on a Colombian acid-savanna oxisol to test the effects of grain legumes, green manures, intercrops and leys as possible components that could increase the stability of systems involving annual cereal crops. Five agropastoral treatments (maize monoculture MMO, maize soybean rotation MRT, maize soybean green manure rotation MGM, native savanna control NSC and maize-agropastoral rotation MAP) under two tillage systems (no till-NT and minimum tillage-MT) were investigated. The effects of NT and MT on SOM and P fractions as well as maize grain yield under the five agropastoral treatments were evaluated. Results showed that soil total C, N and P were generally better under no-till as compared to minimum-tilled soils. While P fractions were also generally higher under no-till treatments, SOM fractions did not show any specific trend. Seven years after establishment of the long-term ley farming experiment (5 years of conventional tillage followed by 2 years alternative tillage systems), MT resulted into moderately higher maize grain yields as compared to NT. The MGM rotation treatment had significantly higher values of maize yield under both tillage systems (4.2 Mg) compared to the NSC (2.3 Mg ha?1). Results from this study indicate that the rotational systems (maize soybean green manure and maize-pastures) improved the soil conditions to implement the no-till or minimum tillage systems on Colombian savanna oxisol. |
| format | Journal Article |
| id | CGSpace44189 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace441892024-08-27T10:37:14Z Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions Basamba, T.A.A. Barrios, E. Amézquita Collazos, Edgar Rao, Idupulapati M. Singh, B.R. maize yields tillage soil organic matter phosphorus acid soils savannas maíz rendimiento labranza materia orgánica del suelo fósforo suelo ácido sabanas Soil organic matter (SOM) and phosphorus (P) fractions play a key role in sustaining the productivity of acid-savanna oxisols and are greatly influenced by tillage practices. In 1993, a long-term experiment on sustainable crop rotation and ley farming systems was initiated on a Colombian acid-savanna oxisol to test the effects of grain legumes, green manures, intercrops and leys as possible components that could increase the stability of systems involving annual cereal crops. Five agropastoral treatments (maize monoculture MMO, maize soybean rotation MRT, maize soybean green manure rotation MGM, native savanna control NSC and maize-agropastoral rotation MAP) under two tillage systems (no till-NT and minimum tillage-MT) were investigated. The effects of NT and MT on SOM and P fractions as well as maize grain yield under the five agropastoral treatments were evaluated. Results showed that soil total C, N and P were generally better under no-till as compared to minimum-tilled soils. While P fractions were also generally higher under no-till treatments, SOM fractions did not show any specific trend. Seven years after establishment of the long-term ley farming experiment (5 years of conventional tillage followed by 2 years alternative tillage systems), MT resulted into moderately higher maize grain yields as compared to NT. The MGM rotation treatment had significantly higher values of maize yield under both tillage systems (4.2 Mg) compared to the NSC (2.3 Mg ha?1). Results from this study indicate that the rotational systems (maize soybean green manure and maize-pastures) improved the soil conditions to implement the no-till or minimum tillage systems on Colombian savanna oxisol. 2006-12 2014-10-02T08:33:24Z 2014-10-02T08:33:24Z Journal Article https://hdl.handle.net/10568/44189 en Limited Access Elsevier |
| spellingShingle | maize yields tillage soil organic matter phosphorus acid soils savannas maíz rendimiento labranza materia orgánica del suelo fósforo suelo ácido sabanas Basamba, T.A.A. Barrios, E. Amézquita Collazos, Edgar Rao, Idupulapati M. Singh, B.R. Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions |
| title | Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions |
| title_full | Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions |
| title_fullStr | Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions |
| title_full_unstemmed | Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions |
| title_short | Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions |
| title_sort | tillage effects on maize yield in a colombian savanna oxisol soil organic matter and p fractions |
| topic | maize yields tillage soil organic matter phosphorus acid soils savannas maíz rendimiento labranza materia orgánica del suelo fósforo suelo ácido sabanas |
| url | https://hdl.handle.net/10568/44189 |
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