Legume Productivity and Soil Nitrogen Dynamics in Lowland Rice-Based Cropping Systems
Rice (Oryza sativa L.) in wet season (WS) preceded by a dry season (DS) fallow, commonly practiced in rainfed lowlands, causes large losses of N through NO3 leaching and denitrification. The green‐manure legumes as NO3 catch crops is economically unattractive to farmers. In a 2‐yr study, we (i) asse...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
1996
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/167325 |
| _version_ | 1855532063268012032 |
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| author | Ladha, J.K. Kundu, D.K. Angelo-Van Coppenolle, M.G. Carangal, V.R. Peoples, M.B. Dart, P.J. |
| author_browse | Angelo-Van Coppenolle, M.G. Carangal, V.R. Dart, P.J. Kundu, D.K. Ladha, J.K. Peoples, M.B. |
| author_facet | Ladha, J.K. Kundu, D.K. Angelo-Van Coppenolle, M.G. Carangal, V.R. Peoples, M.B. Dart, P.J. |
| author_sort | Ladha, J.K. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Rice (Oryza sativa L.) in wet season (WS) preceded by a dry season (DS) fallow, commonly practiced in rainfed lowlands, causes large losses of N through NO3 leaching and denitrification. The green‐manure legumes as NO3 catch crops is economically unattractive to farmers. In a 2‐yr study, we (i) assessed productivity of one grain and four forage legumes (pigeonpea [Cajanus cajan (L.) Millsp.], crotalaria (Crotalaria juncea L.), clitoria (Clitoria ternatea L.), desmanthus [Desmanthus virgatus (L.) Willd.], and siratro [Macroptilium atropurpureum (Mocino and Sessé ex DC.) Urban]) grown in the DS, (ii) examined NO3‐N and NH4‐N dynamics in soil (a Typic Tropaquept), and (iii) evaluated legume residues as a N source for succeeding rice. Nitrate‐N was dominant in the 30‐cm topsoil and was higher under legumes compared with weedy fallow. The legumes produced 4.9 to 9.1 t aboveground biomass ha‐1, accumulated 132 to 306 kg N ha‐1 of which 67 to 81% was derived from N2 fixation. After harvests, 2.9 to 5.2 t ha‐1 of residues containing 81 to 162 kg N ha‐1 were returned to soil. By 3 to 4 wk after flooding, legume‐treated plots had as much as 33 to 40 kg mineral N ha‐1 in topsoil compared with 10 to 13 kg N ha‐1 in weedy fallowed plots. Residues significantly increased rice yield and N uptake. Rice recovered 15 to 31% of the residue N. Failow plots required 25 to 50 kg fertilizer N ha‐1 to produce comparable plant growth responses to that obtained after the legumes. Belowground residues of the legumes apparently contributed 13 to 37 kg N ha‐1 to rice. Such DS legumes that improve farm productivity as well as increase soil fertility might ensure sustainability of production in rainfed lowlands. |
| format | Journal Article |
| id | CGSpace167325 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1996 |
| publishDateRange | 1996 |
| publishDateSort | 1996 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1673252025-12-08T09:54:28Z Legume Productivity and Soil Nitrogen Dynamics in Lowland Rice-Based Cropping Systems Ladha, J.K. Kundu, D.K. Angelo-Van Coppenolle, M.G. Carangal, V.R. Peoples, M.B. Dart, P.J. cropping systems rotations legumes fertilizers nitrogen soil mineral nutrition green manures Rice (Oryza sativa L.) in wet season (WS) preceded by a dry season (DS) fallow, commonly practiced in rainfed lowlands, causes large losses of N through NO3 leaching and denitrification. The green‐manure legumes as NO3 catch crops is economically unattractive to farmers. In a 2‐yr study, we (i) assessed productivity of one grain and four forage legumes (pigeonpea [Cajanus cajan (L.) Millsp.], crotalaria (Crotalaria juncea L.), clitoria (Clitoria ternatea L.), desmanthus [Desmanthus virgatus (L.) Willd.], and siratro [Macroptilium atropurpureum (Mocino and Sessé ex DC.) Urban]) grown in the DS, (ii) examined NO3‐N and NH4‐N dynamics in soil (a Typic Tropaquept), and (iii) evaluated legume residues as a N source for succeeding rice. Nitrate‐N was dominant in the 30‐cm topsoil and was higher under legumes compared with weedy fallow. The legumes produced 4.9 to 9.1 t aboveground biomass ha‐1, accumulated 132 to 306 kg N ha‐1 of which 67 to 81% was derived from N2 fixation. After harvests, 2.9 to 5.2 t ha‐1 of residues containing 81 to 162 kg N ha‐1 were returned to soil. By 3 to 4 wk after flooding, legume‐treated plots had as much as 33 to 40 kg mineral N ha‐1 in topsoil compared with 10 to 13 kg N ha‐1 in weedy fallowed plots. Residues significantly increased rice yield and N uptake. Rice recovered 15 to 31% of the residue N. Failow plots required 25 to 50 kg fertilizer N ha‐1 to produce comparable plant growth responses to that obtained after the legumes. Belowground residues of the legumes apparently contributed 13 to 37 kg N ha‐1 to rice. Such DS legumes that improve farm productivity as well as increase soil fertility might ensure sustainability of production in rainfed lowlands. 1996-01 2024-12-19T12:57:15Z 2024-12-19T12:57:15Z Journal Article https://hdl.handle.net/10568/167325 en Wiley Ladha, J. K.; Kundu, D. K.; Angelo‐Van Coppenolle, M. G.; Carangal, V. R.; Peoples, M. B. and Dart, P. J. 1996. Legume Productivity and Soil Nitrogen Dynamics in Lowland Rice-Based Cropping Systems. Soil Science Soc of Amer J, Volume 60 no. 1 p. 183-192 |
| spellingShingle | cropping systems rotations legumes fertilizers nitrogen soil mineral nutrition green manures Ladha, J.K. Kundu, D.K. Angelo-Van Coppenolle, M.G. Carangal, V.R. Peoples, M.B. Dart, P.J. Legume Productivity and Soil Nitrogen Dynamics in Lowland Rice-Based Cropping Systems |
| title | Legume Productivity and Soil Nitrogen Dynamics in Lowland Rice-Based Cropping Systems |
| title_full | Legume Productivity and Soil Nitrogen Dynamics in Lowland Rice-Based Cropping Systems |
| title_fullStr | Legume Productivity and Soil Nitrogen Dynamics in Lowland Rice-Based Cropping Systems |
| title_full_unstemmed | Legume Productivity and Soil Nitrogen Dynamics in Lowland Rice-Based Cropping Systems |
| title_short | Legume Productivity and Soil Nitrogen Dynamics in Lowland Rice-Based Cropping Systems |
| title_sort | legume productivity and soil nitrogen dynamics in lowland rice based cropping systems |
| topic | cropping systems rotations legumes fertilizers nitrogen soil mineral nutrition green manures |
| url | https://hdl.handle.net/10568/167325 |
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