Publication Date
1993
Description
The fate of nitrogen (N) in animal urine returns to flood irrigated pasture was studied using large soil monolith lysimeters (800 nun diameter x 1200 mm deep). Over a period of I year, the largest fraction of applied 15N (44%) was recovered by the pasture plants. The total amount (42 kg N/ha) and average peak concentration of N, in the leachate (42 µgN/ml) were less than values reported for many: other agricultural situations (e.g., ploughed pasture). The amount of N lost by denitrification was high (28% of applied 15N) and attributed to the wet soil conditions which prevailed. The amount of N remaining in the soil after 1 year (20% of applied 15N) was found mostly in the topsoil.
Citation
Cameron, K C. and Fraser, P M., "Lysimeter Study of the Fate of Nitrogen in Animal Urine Applied to Flood-Irrigated Pasture" (2024). IGC Proceedings (1993-2023). 26.
https://uknowledge.uky.edu/igc/1993/session40/26
Included in
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Lysimeter Study of the Fate of Nitrogen in Animal Urine Applied to Flood-Irrigated Pasture
The fate of nitrogen (N) in animal urine returns to flood irrigated pasture was studied using large soil monolith lysimeters (800 nun diameter x 1200 mm deep). Over a period of I year, the largest fraction of applied 15N (44%) was recovered by the pasture plants. The total amount (42 kg N/ha) and average peak concentration of N, in the leachate (42 µgN/ml) were less than values reported for many: other agricultural situations (e.g., ploughed pasture). The amount of N lost by denitrification was high (28% of applied 15N) and attributed to the wet soil conditions which prevailed. The amount of N remaining in the soil after 1 year (20% of applied 15N) was found mostly in the topsoil.
