Urea as the nitrogen source in NFT hydroponic system


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

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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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