Phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues
Soil phenols have been implicated as inhibitors of soil N cycling within many agroecosystems, including irrigated lowland rice (Oryza sativa L.). To quantify the effects of crop management on temporal patterns of phenol accumulation in lowland rice soils, we measured phenol concentrations in two hum...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2009
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/166183 |
| _version_ | 1855523014843564032 |
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| author | Olk, D.C. Jimenez, R.R. Moscoso, E. Gapas, P. |
| author_browse | Gapas, P. Jimenez, R.R. Moscoso, E. Olk, D.C. |
| author_facet | Olk, D.C. Jimenez, R.R. Moscoso, E. Gapas, P. |
| author_sort | Olk, D.C. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Soil phenols have been implicated as inhibitors of soil N cycling within many agroecosystems, including irrigated lowland rice (Oryza sativa L.). To quantify the effects of crop management on temporal patterns of phenol accumulation in lowland rice soils, we measured phenol concentrations in two humic fractions at two crop growth stages in each growing season during a 4‐yr field study at the International Rice Research Institute (Philippines). Samples were collected from two double‐crop rotations (continuous rice and rice–maize [Zea mays L.]) with two N fertilizer rates (0 and nonlimiting), and with either aerobic or anaerobic decomposition of incorporated crop residues. Phenols were determined by tetramethylammonium hydroxide thermochemolysis. Compared with the other field treatments, anaerobic decomposition of crop residues with continuous rice and nonlimiting rates of N fertilizer promoted a gradual increase in the relative enrichment of phenols in the mobile humic acid fraction during the 4 yr. The level of enrichment varied among phenol compounds, developing the fastest and becoming most pronounced with the smaller molecules of molecular weight 168 or less. Anaerobic decomposition had less effect on phenol enrichment for continuous rice cropping without N fertilizer. No phenol enrichment was found with anaerobic decomposition of rice residues in the rice–maize rotation. Our results are consistent with previous findings of inhibited mineralization of humic N with anaerobic decomposition, continuous rice, and nonlimiting rates of N fertilizer. Rotation of maize with rice or other techniques to ensure aerobic decomposition of crop residues may help mitigate or prevent phenol accumulation. |
| format | Journal Article |
| id | CGSpace166183 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2009 |
| publishDateRange | 2009 |
| publishDateSort | 2009 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1661832024-12-22T05:44:50Z Phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues Olk, D.C. Jimenez, R.R. Moscoso, E. Gapas, P. aerobic treatment anaerobic treatment crop residues cycling decomposition humic acids nitrogen fertilizers organic amendments phenol rice soils rotations irri philippines Soil phenols have been implicated as inhibitors of soil N cycling within many agroecosystems, including irrigated lowland rice (Oryza sativa L.). To quantify the effects of crop management on temporal patterns of phenol accumulation in lowland rice soils, we measured phenol concentrations in two humic fractions at two crop growth stages in each growing season during a 4‐yr field study at the International Rice Research Institute (Philippines). Samples were collected from two double‐crop rotations (continuous rice and rice–maize [Zea mays L.]) with two N fertilizer rates (0 and nonlimiting), and with either aerobic or anaerobic decomposition of incorporated crop residues. Phenols were determined by tetramethylammonium hydroxide thermochemolysis. Compared with the other field treatments, anaerobic decomposition of crop residues with continuous rice and nonlimiting rates of N fertilizer promoted a gradual increase in the relative enrichment of phenols in the mobile humic acid fraction during the 4 yr. The level of enrichment varied among phenol compounds, developing the fastest and becoming most pronounced with the smaller molecules of molecular weight 168 or less. Anaerobic decomposition had less effect on phenol enrichment for continuous rice cropping without N fertilizer. No phenol enrichment was found with anaerobic decomposition of rice residues in the rice–maize rotation. Our results are consistent with previous findings of inhibited mineralization of humic N with anaerobic decomposition, continuous rice, and nonlimiting rates of N fertilizer. Rotation of maize with rice or other techniques to ensure aerobic decomposition of crop residues may help mitigate or prevent phenol accumulation. 2009-05 2024-12-19T12:55:59Z 2024-12-19T12:55:59Z Journal Article https://hdl.handle.net/10568/166183 en Wiley Olk, D.C.; Jimenez, R.R.; Moscoso, E. and Gapas, P. 2009. Phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues. Soil Science Soc of Amer J, Volume 73 no. 3 p. 943-951 |
| spellingShingle | aerobic treatment anaerobic treatment crop residues cycling decomposition humic acids nitrogen fertilizers organic amendments phenol rice soils rotations irri philippines Olk, D.C. Jimenez, R.R. Moscoso, E. Gapas, P. Phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues |
| title | Phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues |
| title_full | Phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues |
| title_fullStr | Phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues |
| title_full_unstemmed | Phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues |
| title_short | Phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues |
| title_sort | phenol accumulation in a young humic fraction following anaerobic decomposition of rice crop residues |
| topic | aerobic treatment anaerobic treatment crop residues cycling decomposition humic acids nitrogen fertilizers organic amendments phenol rice soils rotations irri philippines |
| url | https://hdl.handle.net/10568/166183 |
| work_keys_str_mv | AT olkdc phenolaccumulationinayounghumicfractionfollowinganaerobicdecompositionofricecropresidues AT jimenezrr phenolaccumulationinayounghumicfractionfollowinganaerobicdecompositionofricecropresidues AT moscosoe phenolaccumulationinayounghumicfractionfollowinganaerobicdecompositionofricecropresidues AT gapasp phenolaccumulationinayounghumicfractionfollowinganaerobicdecompositionofricecropresidues |