Yield and agronomic characteristics of tropical rice as influenced by high nitrogen rates
An experiment with treatments comprising of five nitrogen rates (0, 120, 160, 200 and 240 kg N/ha) applied as urea was carried out to evaluate the effects of high nitrogen application on the yield and agronomic performance of two rice varieties; MR 211 and MR 219. Raising nitrogen application was...
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| Format: | Article |
| Language: | English |
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Malaysian Society of Applied Biology
2008
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| Online Access: | http://psasir.upm.edu.my/id/eprint/17670/1/Yield%20and%20agronomic%20characteristics%20of%20tropical%20rice%20as%20influenced%20by%20high%20nitrogen%20rates.pdf |
| _version_ | 1825946055821230080 |
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| author | Nori, Hollena Abd Halim, Mohd Ridzwan Ramlan, Mohd Fauzi |
| author_facet | Nori, Hollena Abd Halim, Mohd Ridzwan Ramlan, Mohd Fauzi |
| author_sort | Nori, Hollena |
| collection | UPM |
| description | An experiment with treatments comprising of five nitrogen rates (0, 120, 160, 200 and 240 kg N/ha) applied as urea
was carried out to evaluate the effects of high nitrogen application on the yield and agronomic performance of two
rice varieties; MR 211 and MR 219. Raising nitrogen application was found to increase (P<0.05) the number of
spikelets per panicle but reduce the percentage of filled spikelets (P<0.05). Although the increment in number of
spikelets per panicle resulted in the reduction of the filled spikelets percentage, the grain yield was not affected due to sufficient production of spikelets per square meter which maintained the grain productivity. The plant agronomic characteristics such as stem height and duration to grain maturity also increased (P<0.05) with nitrogen application. Both varieties differ in the yield components and agronomic characteristics. Between the two varieties, MR 219 is superior to MR 211 in view of the higher grain yield and grain: straw ratio. The result from correlation between yield and yield components implies that the total number of spikelets per square meter was believed to be the major determinant of grain yield. |
| first_indexed | 2024-03-06T07:41:07Z |
| format | Article |
| id | upm.eprints-17670 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T07:41:07Z |
| publishDate | 2008 |
| publisher | Malaysian Society of Applied Biology |
| record_format | dspace |
| spelling | upm.eprints-176702016-09-05T07:34:26Z http://psasir.upm.edu.my/id/eprint/17670/ Yield and agronomic characteristics of tropical rice as influenced by high nitrogen rates Nori, Hollena Abd Halim, Mohd Ridzwan Ramlan, Mohd Fauzi An experiment with treatments comprising of five nitrogen rates (0, 120, 160, 200 and 240 kg N/ha) applied as urea was carried out to evaluate the effects of high nitrogen application on the yield and agronomic performance of two rice varieties; MR 211 and MR 219. Raising nitrogen application was found to increase (P<0.05) the number of spikelets per panicle but reduce the percentage of filled spikelets (P<0.05). Although the increment in number of spikelets per panicle resulted in the reduction of the filled spikelets percentage, the grain yield was not affected due to sufficient production of spikelets per square meter which maintained the grain productivity. The plant agronomic characteristics such as stem height and duration to grain maturity also increased (P<0.05) with nitrogen application. Both varieties differ in the yield components and agronomic characteristics. Between the two varieties, MR 219 is superior to MR 211 in view of the higher grain yield and grain: straw ratio. The result from correlation between yield and yield components implies that the total number of spikelets per square meter was believed to be the major determinant of grain yield. Malaysian Society of Applied Biology 2008 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/17670/1/Yield%20and%20agronomic%20characteristics%20of%20tropical%20rice%20as%20influenced%20by%20high%20nitrogen%20rates.pdf Nori, Hollena and Abd Halim, Mohd Ridzwan and Ramlan, Mohd Fauzi (2008) Yield and agronomic characteristics of tropical rice as influenced by high nitrogen rates. Malaysian Applied Biology, 37 (2). pp. 47-52. ISSN 0126-8643 http://mabjournal.com/index.php?option=com_content&view=article&id=58:volume-372-december-2008&catid=37:current-view&Itemid=56 Rice - Nitrogen - Fixation - Case studies. Nitrogen - Fixation. |
| spellingShingle | Rice - Nitrogen - Fixation - Case studies. Nitrogen - Fixation. Nori, Hollena Abd Halim, Mohd Ridzwan Ramlan, Mohd Fauzi Yield and agronomic characteristics of tropical rice as influenced by high nitrogen rates |
| title | Yield and agronomic characteristics of tropical rice as influenced by high nitrogen rates |
| title_full | Yield and agronomic characteristics of tropical rice as influenced by high nitrogen rates |
| title_fullStr | Yield and agronomic characteristics of tropical rice as influenced by high nitrogen rates |
| title_full_unstemmed | Yield and agronomic characteristics of tropical rice as influenced by high nitrogen rates |
| title_short | Yield and agronomic characteristics of tropical rice as influenced by high nitrogen rates |
| title_sort | yield and agronomic characteristics of tropical rice as influenced by high nitrogen rates |
| topic | Rice - Nitrogen - Fixation - Case studies. Nitrogen - Fixation. |
| url | http://psasir.upm.edu.my/id/eprint/17670/1/Yield%20and%20agronomic%20characteristics%20of%20tropical%20rice%20as%20influenced%20by%20high%20nitrogen%20rates.pdf |
| work_keys_str_mv | AT norihollena yieldandagronomiccharacteristicsoftropicalriceasinfluencedbyhighnitrogenrates AT abdhalimmohdridzwan yieldandagronomiccharacteristicsoftropicalriceasinfluencedbyhighnitrogenrates AT ramlanmohdfauzi yieldandagronomiccharacteristicsoftropicalriceasinfluencedbyhighnitrogenrates |