Critical time of nitrogen application during panicle initiation on the yield of two Malaysia rice cultivars (Oryza sativa L.)
Nitrogen is the most limiting nutrient in rice production. N fertilizer is susceptible to losses when the time of application does not match with period of crop demand. A glasshouse experiment was conducted to determine the critical time of nitrogen fertilizer application at panicle initiation on gr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Universiti Putra Malaysia Press
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/13829/ http://psasir.upm.edu.my/id/eprint/13829/1/Critical%20Time%20of%20Nitrogen%20Application%20During%20Panicle%20Initiation%20on.pdf |
| _version_ | 1848842222180499456 |
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| author | A. Bah, Syed Rastan, Syed Omar Abdul Rahim, Anuar Mohd Hanif, Ahmad Husni |
| author_facet | A. Bah, Syed Rastan, Syed Omar Abdul Rahim, Anuar Mohd Hanif, Ahmad Husni |
| author_sort | A. Bah, |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Nitrogen is the most limiting nutrient in rice production. N fertilizer is susceptible to losses when the time of application does not match with period of crop demand. A glasshouse experiment was conducted to determine the critical time of nitrogen fertilizer application at panicle initiation on grain yield of two Malaysian rice cultivars (MR219 and MR232). The experiment consisted of five N treatments applied each at 60 kg ha-1 at 45 (NI), 50 (N2), 55 (N3), 60 (N4) and 65 (N5) days after seeding (DAS) with five replications. Prior to this stage, a total of 75 kg N ha-1 was applied during vegetative growth stage (at 15 and 35 DAS). Plant physiological parameters such as height, SPAD value and LAI showed statistical difference among some treatments. Application of N also resulted in an increase in plant biomass. The results demonstrate that the split application of fertilizer N at PI stage (55 DAS) significantly increased percentage of filled grains, 1000-grain weight and total grain yield. Incorrect timing of N application (65 DAS) at P1 stage, drastically reduced rice yield to approximately 39% for MR2 19 and 17% for MR232. Farmers should be advised to apply N between 50 DAS and 55 DAS, even though application of N at 55 DAS was far better than 50 DAS in terms of yield parameters. |
| first_indexed | 2025-11-15T07:55:42Z |
| format | Article |
| id | upm-13829 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:55:42Z |
| publishDate | 2009 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-138292015-09-22T04:01:52Z http://psasir.upm.edu.my/id/eprint/13829/ Critical time of nitrogen application during panicle initiation on the yield of two Malaysia rice cultivars (Oryza sativa L.) A. Bah, Syed Rastan, Syed Omar Abdul Rahim, Anuar Mohd Hanif, Ahmad Husni Nitrogen is the most limiting nutrient in rice production. N fertilizer is susceptible to losses when the time of application does not match with period of crop demand. A glasshouse experiment was conducted to determine the critical time of nitrogen fertilizer application at panicle initiation on grain yield of two Malaysian rice cultivars (MR219 and MR232). The experiment consisted of five N treatments applied each at 60 kg ha-1 at 45 (NI), 50 (N2), 55 (N3), 60 (N4) and 65 (N5) days after seeding (DAS) with five replications. Prior to this stage, a total of 75 kg N ha-1 was applied during vegetative growth stage (at 15 and 35 DAS). Plant physiological parameters such as height, SPAD value and LAI showed statistical difference among some treatments. Application of N also resulted in an increase in plant biomass. The results demonstrate that the split application of fertilizer N at PI stage (55 DAS) significantly increased percentage of filled grains, 1000-grain weight and total grain yield. Incorrect timing of N application (65 DAS) at P1 stage, drastically reduced rice yield to approximately 39% for MR2 19 and 17% for MR232. Farmers should be advised to apply N between 50 DAS and 55 DAS, even though application of N at 55 DAS was far better than 50 DAS in terms of yield parameters. Universiti Putra Malaysia Press 2009 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/13829/1/Critical%20Time%20of%20Nitrogen%20Application%20During%20Panicle%20Initiation%20on.pdf A. Bah, and Syed Rastan, Syed Omar and Abdul Rahim, Anuar and Mohd Hanif, Ahmad Husni (2009) Critical time of nitrogen application during panicle initiation on the yield of two Malaysia rice cultivars (Oryza sativa L.). Pertanika Journal of Tropical Agricultural Science, 32 (2). pp. 317-322. ISSN 1511-3701; ESSN: 2231-8542 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2032%20(2)%20Aug.%202009/23%20Pages%20317-322.pdf |
| spellingShingle | A. Bah, Syed Rastan, Syed Omar Abdul Rahim, Anuar Mohd Hanif, Ahmad Husni Critical time of nitrogen application during panicle initiation on the yield of two Malaysia rice cultivars (Oryza sativa L.) |
| title | Critical time of nitrogen application during panicle initiation on the yield of two Malaysia rice cultivars (Oryza sativa L.) |
| title_full | Critical time of nitrogen application during panicle initiation on the yield of two Malaysia rice cultivars (Oryza sativa L.) |
| title_fullStr | Critical time of nitrogen application during panicle initiation on the yield of two Malaysia rice cultivars (Oryza sativa L.) |
| title_full_unstemmed | Critical time of nitrogen application during panicle initiation on the yield of two Malaysia rice cultivars (Oryza sativa L.) |
| title_short | Critical time of nitrogen application during panicle initiation on the yield of two Malaysia rice cultivars (Oryza sativa L.) |
| title_sort | critical time of nitrogen application during panicle initiation on the yield of two malaysia rice cultivars (oryza sativa l.) |
| url | http://psasir.upm.edu.my/id/eprint/13829/ http://psasir.upm.edu.my/id/eprint/13829/ http://psasir.upm.edu.my/id/eprint/13829/1/Critical%20Time%20of%20Nitrogen%20Application%20During%20Panicle%20Initiation%20on.pdf |