Leaf color chart for managing nitrogen fertilizer in lowland rice in Bangladesh
Nitrogen (N) fertilizer, while essential for high yield and profit in rice (Oryza sativa L.) farming, is often managed inefficiently by Asian rice farmers. We evaluated the leaf color chart (LCC) as a simple tool for improving the time and rate of N fertilizer use in farmers’ fields with no limitati...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2005
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/166738 |
| _version_ | 1855517375535775744 |
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| author | Alam, M. Murshedul Ladha, J.K. Khan, S. Rahman Foyjunnessa Harun-ur-Rashid Khan, A.H. Buresh, R.J. |
| author_browse | Alam, M. Murshedul Buresh, R.J. Foyjunnessa Harun-ur-Rashid Khan, A.H. Khan, S. Rahman Ladha, J.K. |
| author_facet | Alam, M. Murshedul Ladha, J.K. Khan, S. Rahman Foyjunnessa Harun-ur-Rashid Khan, A.H. Buresh, R.J. |
| author_sort | Alam, M. Murshedul |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Nitrogen (N) fertilizer, while essential for high yield and profit in rice (Oryza sativa L.) farming, is often managed inefficiently by Asian rice farmers. We evaluated the leaf color chart (LCC) as a simple tool for improving the time and rate of N fertilizer use in farmers’ fields with no limitation in water supply in southwestern Bangladesh. Use of the LCC for N management consistently increased grain yield and profit as compared with the farmers’ fertilizer practice across the three wet (Aman) and three dry (Boro) seasons, which each involved 1 to 5 villages and a total of 8 to 36 farmers. Use of the LCC for N management without any other change in the farmers’ fertilizer or crop management increased average grain yield by 0.1 to 0.7 Mg ha−1 across villages and seasons. This corresponded to an average added net return of US$ 41 to 65 ha−1 season−1, which arose largely because of increased yield. Grain yields were increased by an additional ≥0.3 Mg ha−1 at about half the combinations of villages and seasons when the LCC was combined with recommended P, K, S, and Zn fertilization. Grain yields were further increased by another ≥0.4 Mg ha−1 at about half the combinations of villages and seasons when the LCC and recommended P, K, S, and Zn fertilization were combined with improved crop management, involving the recommended manual weed control and plant spacing. Use of the LCC with rice is ready for wide‐scale promotion in Bangladesh. |
| format | Journal Article |
| id | CGSpace166738 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2005 |
| publishDateRange | 2005 |
| publishDateSort | 2005 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1667382025-05-14T10:39:31Z Leaf color chart for managing nitrogen fertilizer in lowland rice in Bangladesh Alam, M. Murshedul Ladha, J.K. Khan, S. Rahman Foyjunnessa Harun-ur-Rashid Khan, A.H. Buresh, R.J. application date application rates colour crop yield leaves nitrogen fertilizers phosphorus fertilizers potassium fertilizers profits returns row spacing sulfur fertilizers zinc fertilizers bangladesh Nitrogen (N) fertilizer, while essential for high yield and profit in rice (Oryza sativa L.) farming, is often managed inefficiently by Asian rice farmers. We evaluated the leaf color chart (LCC) as a simple tool for improving the time and rate of N fertilizer use in farmers’ fields with no limitation in water supply in southwestern Bangladesh. Use of the LCC for N management consistently increased grain yield and profit as compared with the farmers’ fertilizer practice across the three wet (Aman) and three dry (Boro) seasons, which each involved 1 to 5 villages and a total of 8 to 36 farmers. Use of the LCC for N management without any other change in the farmers’ fertilizer or crop management increased average grain yield by 0.1 to 0.7 Mg ha−1 across villages and seasons. This corresponded to an average added net return of US$ 41 to 65 ha−1 season−1, which arose largely because of increased yield. Grain yields were increased by an additional ≥0.3 Mg ha−1 at about half the combinations of villages and seasons when the LCC was combined with recommended P, K, S, and Zn fertilization. Grain yields were further increased by another ≥0.4 Mg ha−1 at about half the combinations of villages and seasons when the LCC and recommended P, K, S, and Zn fertilization were combined with improved crop management, involving the recommended manual weed control and plant spacing. Use of the LCC with rice is ready for wide‐scale promotion in Bangladesh. 2005-05 2024-12-19T12:56:35Z 2024-12-19T12:56:35Z Journal Article https://hdl.handle.net/10568/166738 en Wiley Alam, M. Murshedul; Ladha, J. K.; Khan, S. Rahman; Foyjunnessa; Harun‐ur‐Rashid; Khan, A. H. and Buresh, R. J. 2005. Leaf color chart for managing nitrogen fertilizer in lowland rice in Bangladesh. Agronomy Journal, Volume 97 no. 3 p. 949-959 |
| spellingShingle | application date application rates colour crop yield leaves nitrogen fertilizers phosphorus fertilizers potassium fertilizers profits returns row spacing sulfur fertilizers zinc fertilizers bangladesh Alam, M. Murshedul Ladha, J.K. Khan, S. Rahman Foyjunnessa Harun-ur-Rashid Khan, A.H. Buresh, R.J. Leaf color chart for managing nitrogen fertilizer in lowland rice in Bangladesh |
| title | Leaf color chart for managing nitrogen fertilizer in lowland rice in Bangladesh |
| title_full | Leaf color chart for managing nitrogen fertilizer in lowland rice in Bangladesh |
| title_fullStr | Leaf color chart for managing nitrogen fertilizer in lowland rice in Bangladesh |
| title_full_unstemmed | Leaf color chart for managing nitrogen fertilizer in lowland rice in Bangladesh |
| title_short | Leaf color chart for managing nitrogen fertilizer in lowland rice in Bangladesh |
| title_sort | leaf color chart for managing nitrogen fertilizer in lowland rice in bangladesh |
| topic | application date application rates colour crop yield leaves nitrogen fertilizers phosphorus fertilizers potassium fertilizers profits returns row spacing sulfur fertilizers zinc fertilizers bangladesh |
| url | https://hdl.handle.net/10568/166738 |
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