Citation
Khalip R., . and Aminuddin H., . and Norayah K., . and Alias H., . Urea as the nitrogen source in NFT hydroponic system. pp. 87-94. ISSN 0126-6128
Abstract
Urea as the source of nitrogen in the nutrient solution in NFT (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 similar for both treatments. The study showed that urea can be substituted for nitrate as the nitrogen source in the NFT hydroponic system.
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Abstract
Urea as the source of nitrogen in the nutrient solution in NFT (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 similar for both treatments. The study showed that urea can be substituted for nitrate as the nitrogen source in the NFT hydroponic system.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Hydroponics |
| AGROVOC Term: | Urea |
| AGROVOC Term: | Nutrient film technique |
| AGROVOC Term: | Hydrolysis |
| AGROVOC Term: | Nitrification |
| AGROVOC Term: | Urease |
| AGROVOC Term: | Ammonium |
| AGROVOC Term: | Nitrogen |
| AGROVOC Term: | Nutrient uptake |
| AGROVOC Term: | Nutrient solutions |
| Geographical Term: | Malaysia |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 27 Apr 2025 23:30 |
| URI: | http://webagris.upm.edu.my/id/eprint/22755 |
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