Root Response to Water Stress in Rainfed Lowland Rice
The relation between soil mechanical impedance as a result of soil drying, and root system growth (mass and length density) of rice was investigated in greenhouse and field studies. In a greenhouse experiment, soil drying for 16 days increased mechanical impedance in the 0–20 cm soil layer from near...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Cambridge University Press
1990
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/166285 |
| _version_ | 1855524473767198720 |
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| author | Thangaraj, M. O'Toole, J.C. De Datta, S.K. |
| author_browse | De Datta, S.K. O'Toole, J.C. Thangaraj, M. |
| author_facet | Thangaraj, M. O'Toole, J.C. De Datta, S.K. |
| author_sort | Thangaraj, M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The relation between soil mechanical impedance as a result of soil drying, and root system growth (mass and length density) of rice was investigated in greenhouse and field studies. In a greenhouse experiment, soil drying for 16 days increased mechanical impedance in the 0–20 cm soil layer from near 0 to 2.5 MPa, and decreased root growth by 47% compared to the continuously flooded control. Root length density decreased with decreasing soil moisture and increasing soil mechanical impedance. In a lowland field experiment using a sprinkler irrigation gradient treatment for 19 days during the vegetative growth stage, soil mechanical impedance as low as 0.01 MPa inhibited root growth while values greater than 0.3–0.5 MPa decreased root growth and extension by 75%. The relative loss of potential root growth was continued after reflooding. Root length density, measured at flowering, was linearly related to yield. |
| format | Journal Article |
| id | CGSpace166285 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1990 |
| publishDateRange | 1990 |
| publishDateSort | 1990 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace1662852025-05-14T10:39:41Z Root Response to Water Stress in Rainfed Lowland Rice Thangaraj, M. O'Toole, J.C. De Datta, S.K. root response water stress rainfed lowland rice The relation between soil mechanical impedance as a result of soil drying, and root system growth (mass and length density) of rice was investigated in greenhouse and field studies. In a greenhouse experiment, soil drying for 16 days increased mechanical impedance in the 0–20 cm soil layer from near 0 to 2.5 MPa, and decreased root growth by 47% compared to the continuously flooded control. Root length density decreased with decreasing soil moisture and increasing soil mechanical impedance. In a lowland field experiment using a sprinkler irrigation gradient treatment for 19 days during the vegetative growth stage, soil mechanical impedance as low as 0.01 MPa inhibited root growth while values greater than 0.3–0.5 MPa decreased root growth and extension by 75%. The relative loss of potential root growth was continued after reflooding. Root length density, measured at flowering, was linearly related to yield. 1990-07 2024-12-19T12:56:06Z 2024-12-19T12:56:06Z Journal Article https://hdl.handle.net/10568/166285 en Cambridge University Press Thangaraj, M.; O'Toole, J. C. and De Datta, S. K. 1990. Root Response to Water Stress in Rainfed Lowland Rice. Ex. Agric., Volume 26 no. 3 p. 287-296 |
| spellingShingle | root response water stress rainfed lowland rice Thangaraj, M. O'Toole, J.C. De Datta, S.K. Root Response to Water Stress in Rainfed Lowland Rice |
| title | Root Response to Water Stress in Rainfed Lowland Rice |
| title_full | Root Response to Water Stress in Rainfed Lowland Rice |
| title_fullStr | Root Response to Water Stress in Rainfed Lowland Rice |
| title_full_unstemmed | Root Response to Water Stress in Rainfed Lowland Rice |
| title_short | Root Response to Water Stress in Rainfed Lowland Rice |
| title_sort | root response to water stress in rainfed lowland rice |
| topic | root response water stress rainfed lowland rice |
| url | https://hdl.handle.net/10568/166285 |
| work_keys_str_mv | AT thangarajm rootresponsetowaterstressinrainfedlowlandrice AT otoolejc rootresponsetowaterstressinrainfedlowlandrice AT dedattask rootresponsetowaterstressinrainfedlowlandrice |