Decomposition and nutrient release by green manures in a tropical hillside agroecosystem
The decomposition and nutrient release of 12 plant materials were assessed in a 20-week litterbag field study in hillsides from Cauca, Colombia. Leaves of Tithonia diversifolia (TTH) and Indigofera constricta (IND) decomposed quickly (k=0.035±0.002 d?1), while those of Cratylia argentea (CRA) and th...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2002
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/42717 |
| _version_ | 1855522012715286528 |
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| author | Cobo Borrero, Juan G. Barrios, E. Kass, DCL Thomas, Richard J. |
| author_browse | Barrios, E. Cobo Borrero, Juan G. Kass, DCL Thomas, Richard J. |
| author_facet | Cobo Borrero, Juan G. Barrios, E. Kass, DCL Thomas, Richard J. |
| author_sort | Cobo Borrero, Juan G. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The decomposition and nutrient release of 12 plant materials were assessed in a 20-week litterbag field study in hillsides from Cauca, Colombia. Leaves of Tithonia diversifolia (TTH) and Indigofera constricta (IND) decomposed quickly (k=0.035±0.002 d?1), while those of Cratylia argentea (CRA) and the stems evaluated decomposed slowly (k=0.007±0.002 d?1). Potassium presented the highest release rates (k>0.085 d?1). Rates of N and P release were high for all leaf materials evaluated (k>0.028 d?1) with the exception of CRA (N and P), TTH and IND (P). While Mg release rates ranged from 0.013 to 0.122 d?1, Ca release was generally slower (k=0.008–0.041 d?1). Initial quality parameters that best correlated with decomposition (P>0.001) were neutral detergent fibre, NDF (r=?0.96) and in vitro dry matter digestibility, IVDMD (r=0.87). It is argued that NDF or IVDMD could be useful lab-based tests during screening of plant materials as green manures. Significant correlations (P>0.05) were also found for initial quality parameters and nutrient release, being most important the lignin/N ratio (r=?0.71) and (lignin+polyphenol)/N ratios (r=?0.70) for N release, the C/N (r=0.70) and N/P ratios (r=?0.66) for P release, the hemicellulose content (r=?0.75) for K release, the Ca content (r=0.82) for Ca release, and the C/P ratio (r=0.65) for Mg release. After 20 weeks, the leaves of Mucuna deerengianum released the highest amounts of N and P (144.5 and 11.4 kg ha?1, respectively), while TTH released the highest amounts of K, Ca and Mg (129.3, 112.6 and 25.9 kg ha?1, respectively). These results show the potential of some plant materials studied as sources of nutrients in tropical hillside agroecosystems. |
| format | Journal Article |
| id | CGSpace42717 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2002 |
| publishDateRange | 2002 |
| publishDateSort | 2002 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace427172024-08-29T11:41:29Z Decomposition and nutrient release by green manures in a tropical hillside agroecosystem Cobo Borrero, Juan G. Barrios, E. Kass, DCL Thomas, Richard J. green manures degradation nutrients sloping land abonos verdes degradación nutrientes terreno en declive The decomposition and nutrient release of 12 plant materials were assessed in a 20-week litterbag field study in hillsides from Cauca, Colombia. Leaves of Tithonia diversifolia (TTH) and Indigofera constricta (IND) decomposed quickly (k=0.035±0.002 d?1), while those of Cratylia argentea (CRA) and the stems evaluated decomposed slowly (k=0.007±0.002 d?1). Potassium presented the highest release rates (k>0.085 d?1). Rates of N and P release were high for all leaf materials evaluated (k>0.028 d?1) with the exception of CRA (N and P), TTH and IND (P). While Mg release rates ranged from 0.013 to 0.122 d?1, Ca release was generally slower (k=0.008–0.041 d?1). Initial quality parameters that best correlated with decomposition (P>0.001) were neutral detergent fibre, NDF (r=?0.96) and in vitro dry matter digestibility, IVDMD (r=0.87). It is argued that NDF or IVDMD could be useful lab-based tests during screening of plant materials as green manures. Significant correlations (P>0.05) were also found for initial quality parameters and nutrient release, being most important the lignin/N ratio (r=?0.71) and (lignin+polyphenol)/N ratios (r=?0.70) for N release, the C/N (r=0.70) and N/P ratios (r=?0.66) for P release, the hemicellulose content (r=?0.75) for K release, the Ca content (r=0.82) for Ca release, and the C/P ratio (r=0.65) for Mg release. After 20 weeks, the leaves of Mucuna deerengianum released the highest amounts of N and P (144.5 and 11.4 kg ha?1, respectively), while TTH released the highest amounts of K, Ca and Mg (129.3, 112.6 and 25.9 kg ha?1, respectively). These results show the potential of some plant materials studied as sources of nutrients in tropical hillside agroecosystems. 2002 2014-09-24T07:58:27Z 2014-09-24T07:58:27Z Journal Article https://hdl.handle.net/10568/42717 en Limited Access Springer |
| spellingShingle | green manures degradation nutrients sloping land abonos verdes degradación nutrientes terreno en declive Cobo Borrero, Juan G. Barrios, E. Kass, DCL Thomas, Richard J. Decomposition and nutrient release by green manures in a tropical hillside agroecosystem |
| title | Decomposition and nutrient release by green manures in a tropical hillside agroecosystem |
| title_full | Decomposition and nutrient release by green manures in a tropical hillside agroecosystem |
| title_fullStr | Decomposition and nutrient release by green manures in a tropical hillside agroecosystem |
| title_full_unstemmed | Decomposition and nutrient release by green manures in a tropical hillside agroecosystem |
| title_short | Decomposition and nutrient release by green manures in a tropical hillside agroecosystem |
| title_sort | decomposition and nutrient release by green manures in a tropical hillside agroecosystem |
| topic | green manures degradation nutrients sloping land abonos verdes degradación nutrientes terreno en declive |
| url | https://hdl.handle.net/10568/42717 |
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