Response of non-flooded rice to nitrogen rate
Nitrogen and water supply are important factors that influence rice growth and yield. The grain yield response to N application rate was significantly quadratic in nature irrespective of water management practices. A higher yield response to N application rate was observed under flooded as compared...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Malaysian Agricultural Research and Development Institute (MARDI)
2005
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| Online Access: | http://psasir.upm.edu.my/id/eprint/48937/1/Response%20of%20non-flooded%20rice%20to%20nitrogen%20rate.pdf |
| _version_ | 1796975096186798080 |
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| author | Othman, Sariam Yusop, Mohd Khanif Talib, Zahrah |
| author_facet | Othman, Sariam Yusop, Mohd Khanif Talib, Zahrah |
| author_sort | Othman, Sariam |
| collection | UPM |
| description | Nitrogen and water supply are important factors that influence rice growth and yield. The grain yield response to N application rate was significantly quadratic in nature irrespective of water management practices. A higher yield response to N application rate was observed under flooded as compared to non-flooded (NF)- saturated and non-flooded (NF)-field capacity conditions. The estimated N rates for maximum yield were 99, 105 and 126 kg/ha for flooded, NF-saturated and NF-field capacity conditions, respectively. The higher amount of N needed for maximum rice yield under NF-field capacity conditions was probably due to greater N losses as a result of alternate wetting and drying of soil as well as the reduced root system. However, the optimum N rate for maximum yield did not differ very much between flooded and NF-saturated conditions indicating the close similarity in N requirement under both water management practices. The dry shoot biomass response to N rate was quadratic but it was not significant under flooded and NF-saturated conditions. However, a significant quadratic response was observed for dry root biomass under flooded and NF-saturated conditions. The dry shoot and root biomass response to N rate was significantly linear under NF-field capacity conditions. |
| first_indexed | 2024-03-06T09:06:31Z |
| format | Article |
| id | upm.eprints-48937 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:06:31Z |
| publishDate | 2005 |
| publisher | Malaysian Agricultural Research and Development Institute (MARDI) |
| record_format | dspace |
| spelling | upm.eprints-489372016-12-29T09:58:52Z http://psasir.upm.edu.my/id/eprint/48937/ Response of non-flooded rice to nitrogen rate Othman, Sariam Yusop, Mohd Khanif Talib, Zahrah Nitrogen and water supply are important factors that influence rice growth and yield. The grain yield response to N application rate was significantly quadratic in nature irrespective of water management practices. A higher yield response to N application rate was observed under flooded as compared to non-flooded (NF)- saturated and non-flooded (NF)-field capacity conditions. The estimated N rates for maximum yield were 99, 105 and 126 kg/ha for flooded, NF-saturated and NF-field capacity conditions, respectively. The higher amount of N needed for maximum rice yield under NF-field capacity conditions was probably due to greater N losses as a result of alternate wetting and drying of soil as well as the reduced root system. However, the optimum N rate for maximum yield did not differ very much between flooded and NF-saturated conditions indicating the close similarity in N requirement under both water management practices. The dry shoot biomass response to N rate was quadratic but it was not significant under flooded and NF-saturated conditions. However, a significant quadratic response was observed for dry root biomass under flooded and NF-saturated conditions. The dry shoot and root biomass response to N rate was significantly linear under NF-field capacity conditions. Malaysian Agricultural Research and Development Institute (MARDI) 2005 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/48937/1/Response%20of%20non-flooded%20rice%20to%20nitrogen%20rate.pdf Othman, Sariam and Yusop, Mohd Khanif and Talib, Zahrah (2005) Response of non-flooded rice to nitrogen rate. Journal of Tropical Agriculture and Food Science, 33 (1). pp. 17-23. ISSN 1394-9829; ESSN: 2289-9650 http://ejtafs.mardi.gov.my/index.php/publication/issues/archive/68-2005/volume-33-no1/827-330111 |
| spellingShingle | Othman, Sariam Yusop, Mohd Khanif Talib, Zahrah Response of non-flooded rice to nitrogen rate |
| title | Response of non-flooded rice to nitrogen rate |
| title_full | Response of non-flooded rice to nitrogen rate |
| title_fullStr | Response of non-flooded rice to nitrogen rate |
| title_full_unstemmed | Response of non-flooded rice to nitrogen rate |
| title_short | Response of non-flooded rice to nitrogen rate |
| title_sort | response of non flooded rice to nitrogen rate |
| url | http://psasir.upm.edu.my/id/eprint/48937/1/Response%20of%20non-flooded%20rice%20to%20nitrogen%20rate.pdf |
| work_keys_str_mv | AT othmansariam responseofnonfloodedricetonitrogenrate AT yusopmohdkhanif responseofnonfloodedricetonitrogenrate AT talibzahrah responseofnonfloodedricetonitrogenrate |