Urea as the Nitrogen source in NIT Hydroponic System
Urea as the source of nitrogen in the nutrient solution in NIT (nutrient film technique) hydroponic system undergoes hydrolysis which results in the release of ammonium in solution. Urea hydrolysis was rapid from the 7th day onwards and ended by the 20th day. At the same time, ammonium concentrati...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universiti Putra Malaysia Press
1993
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/3189/ http://psasir.upm.edu.my/id/eprint/3189/1/Urea_as_the_Nitrogen_Source_in_NIT_Hydroponic_System.pdf |
| _version_ | 1848839460941201408 |
|---|---|
| author | Hussin, Aminuddin Abdul Raffar, Khalip K., Norayah Husin, Alias |
| author_facet | Hussin, Aminuddin Abdul Raffar, Khalip K., Norayah Husin, Alias |
| author_sort | Hussin, Aminuddin |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Urea as the source of nitrogen in the nutrient solution in NIT (nutrient film technique) hydroponic system
undergoes hydrolysis which results in the release of ammonium in solution. Urea hydrolysis was rapid from the
7th day onwards and ended by the 20th day. At the same time, ammonium concentration in solution increased
and reached its maximum on the 20th day. Nitrification occurred simultaneously and peaked also on the 20th
day. Plant dry matter weight at harvest was similar for both urea and nitrate treatments. Ammonium
concentration in leaves and roots was higher in urea than in nitrate treatments. Nitrate concentration in leaves
and roots was similarfor both treatments. The study showed that urea can be substituted for nitrate as the nitrogen
source in the NIT hydroponic system. |
| first_indexed | 2025-11-15T07:11:49Z |
| format | Article |
| id | upm-3189 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:11:49Z |
| publishDate | 1993 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-31892015-08-28T08:51:13Z http://psasir.upm.edu.my/id/eprint/3189/ Urea as the Nitrogen source in NIT Hydroponic System Hussin, Aminuddin Abdul Raffar, Khalip K., Norayah Husin, Alias Urea as the source of nitrogen in the nutrient solution in NIT (nutrient film technique) hydroponic system undergoes hydrolysis which results in the release of ammonium in solution. Urea hydrolysis was rapid from the 7th day onwards and ended by the 20th day. At the same time, ammonium concentration in solution increased and reached its maximum on the 20th day. Nitrification occurred simultaneously and peaked also on the 20th day. Plant dry matter weight at harvest was similar for both urea and nitrate treatments. Ammonium concentration in leaves and roots was higher in urea than in nitrate treatments. Nitrate concentration in leaves and roots was similarfor both treatments. The study showed that urea can be substituted for nitrate as the nitrogen source in the NIT hydroponic system. Universiti Putra Malaysia Press 1993 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3189/1/Urea_as_the_Nitrogen_Source_in_NIT_Hydroponic_System.pdf Hussin, Aminuddin and Abdul Raffar, Khalip and K., Norayah and Husin, Alias (1993) Urea as the Nitrogen source in NIT Hydroponic System. Pertanika Journal of Tropical Agricultural Science, 16 (2). pp. 87-94. ISSN 0126-6128 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2016%20(2)%20Aug.%201993/03%20JTAS%20Vol.16%20(2)%201993%20(Pg%2087-94).pdf |
| spellingShingle | Hussin, Aminuddin Abdul Raffar, Khalip K., Norayah Husin, Alias Urea as the Nitrogen source in NIT Hydroponic System |
| title | Urea as the Nitrogen source in NIT Hydroponic System |
| title_full | Urea as the Nitrogen source in NIT Hydroponic System |
| title_fullStr | Urea as the Nitrogen source in NIT Hydroponic System |
| title_full_unstemmed | Urea as the Nitrogen source in NIT Hydroponic System |
| title_short | Urea as the Nitrogen source in NIT Hydroponic System |
| title_sort | urea as the nitrogen source in nit hydroponic system |
| url | http://psasir.upm.edu.my/id/eprint/3189/ http://psasir.upm.edu.my/id/eprint/3189/ http://psasir.upm.edu.my/id/eprint/3189/1/Urea_as_the_Nitrogen_Source_in_NIT_Hydroponic_System.pdf |