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Publication Date
1993
Location
New Zealand
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" (1993). IGC Proceedings (1985-2023). 26.
(URL: https://uknowledge.uky.edu/igc/1993/session40/26)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Lysimeter Study of the Fate of Nitrogen in Animal Urine Applied to Flood-Irrigated Pasture
New Zealand
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.
