Effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration
Decision support tools for non-destructive estimation of rice crop nitrogen (N) status (e.g., chlorophyll meter [SPAD] or leaf color chart [LCC]) are an established technology for improved N management in irrigated systems, but their value in rainfed environments with frequent abiotic stresses remai...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Hindawi Limited
2010
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/166094 |
| _version_ | 1855529277374595072 |
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| author | Haefele, Stephan M. Siopongco, Joel D. L. C. Amarante, Serafin T. Tuong, To Phuc |
| author_browse | Amarante, Serafin T. Haefele, Stephan M. Siopongco, Joel D. L. C. Tuong, To Phuc |
| author_facet | Haefele, Stephan M. Siopongco, Joel D. L. C. Amarante, Serafin T. Tuong, To Phuc |
| author_sort | Haefele, Stephan M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Decision support tools for non-destructive estimation of rice crop nitrogen (N) status (e.g., chlorophyll meter [SPAD] or leaf color chart [LCC]) are an established technology for improved N management in irrigated systems, but their value in rainfed environments with frequent abiotic stresses remains untested. Therefore, we studied the effect of drought, salinity, phosphorus (P) deficiency, and sulfur (S) deficiency on leaf N estimates derived from SPAD and LCC measurements in a greenhouse experiment. Linear relations between chlorophyll concentration and leaf N concentration based on dry weight (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>N</mml:mtext><mml:mrow><mml:mtext>dw</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:math>) between SPAD values adjusted for leaf thickness and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>N</mml:mtext><mml:mrow><mml:mtext>dw</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:math>and between LCC scores adjusted for leaf thickness and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>N</mml:mtext><mml:mrow><mml:mtext>dw</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:math>could be confirmed for all treatments and varieties used. Leaf spectral reflectance measurements did not show a stress-dependent change in the reflectance pattern, indicating that no specific element of the photosynthetic complex was affected by the stresses and at the stress level applied. We concluded that SPAD and LCC are potentially useful tools for improved N management in moderately unfavorable rice environments. However, calibration for the most common rice varieties in the target region is recommended to increase the precision of the leaf N estimates. |
| format | Journal Article |
| id | CGSpace166094 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2010 |
| publishDateRange | 2010 |
| publishDateSort | 2010 |
| publisher | Hindawi Limited |
| publisherStr | Hindawi Limited |
| record_format | dspace |
| spelling | CGSpace1660942025-12-08T10:29:22Z Effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration Haefele, Stephan M. Siopongco, Joel D. L. C. Amarante, Serafin T. Tuong, To Phuc abiotic stress chemical composition chlorophyll chlorophyll meter drought drought stress estimation leaf colour leaf colour chart leaves nitrogen content nutrient deficiencies phosphorus photosynthesis plant characteristics rainfed rice reflectance salinity salt stress spad meter sulphur technology varieties Decision support tools for non-destructive estimation of rice crop nitrogen (N) status (e.g., chlorophyll meter [SPAD] or leaf color chart [LCC]) are an established technology for improved N management in irrigated systems, but their value in rainfed environments with frequent abiotic stresses remains untested. Therefore, we studied the effect of drought, salinity, phosphorus (P) deficiency, and sulfur (S) deficiency on leaf N estimates derived from SPAD and LCC measurements in a greenhouse experiment. Linear relations between chlorophyll concentration and leaf N concentration based on dry weight (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>N</mml:mtext><mml:mrow><mml:mtext>dw</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:math>) between SPAD values adjusted for leaf thickness and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>N</mml:mtext><mml:mrow><mml:mtext>dw</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:math>and between LCC scores adjusted for leaf thickness and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mtext>N</mml:mtext><mml:mrow><mml:mtext>dw</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:math>could be confirmed for all treatments and varieties used. Leaf spectral reflectance measurements did not show a stress-dependent change in the reflectance pattern, indicating that no specific element of the photosynthetic complex was affected by the stresses and at the stress level applied. We concluded that SPAD and LCC are potentially useful tools for improved N management in moderately unfavorable rice environments. However, calibration for the most common rice varieties in the target region is recommended to increase the precision of the leaf N estimates. 2010 2024-12-19T12:55:51Z 2024-12-19T12:55:51Z Journal Article https://hdl.handle.net/10568/166094 en Open Access Hindawi Limited Haefele, Stephan M.; Siopongco, Joel D. L. C.; Amarante, Serafin T. and Tuong, To Phuc. 2010. Effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration. International Journal of Agronomy, Volume 2010 p. 1-11 |
| spellingShingle | abiotic stress chemical composition chlorophyll chlorophyll meter drought drought stress estimation leaf colour leaf colour chart leaves nitrogen content nutrient deficiencies phosphorus photosynthesis plant characteristics rainfed rice reflectance salinity salt stress spad meter sulphur technology varieties Haefele, Stephan M. Siopongco, Joel D. L. C. Amarante, Serafin T. Tuong, To Phuc Effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration |
| title | Effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration |
| title_full | Effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration |
| title_fullStr | Effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration |
| title_full_unstemmed | Effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration |
| title_short | Effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration |
| title_sort | effect of abiotic stresses on the nondestructive estimation of rice leaf nitrogen concentration |
| topic | abiotic stress chemical composition chlorophyll chlorophyll meter drought drought stress estimation leaf colour leaf colour chart leaves nitrogen content nutrient deficiencies phosphorus photosynthesis plant characteristics rainfed rice reflectance salinity salt stress spad meter sulphur technology varieties |
| url | https://hdl.handle.net/10568/166094 |
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