Satellite Symposium 1: Optimisation
Publication Date
2005
Location
Dublin Ireland
Description
The supply and demand for nitrogen (N) in annual-based pasture-crop rotations in southern Australia is often poorly synchronised, leading to large losses of inorganic N (Fillery, 2001). Perennial pasture species, particularly lucerne, are being recommended to minimise dryland salinity. The implications for N cycling of using lucerne in place of annual legumes on acidic sandy soils that are widespread have not been widely studied. Lucerne is less tolerant of acidity and could fix less N than annual legumes. Lucerne root residues mineralise at slower rates than annual pasture residues with lower N release to subsequent wheat crops (Bolger et al., 2003). The aims of the work were to compare N cycling under lucerne and the traditional annual legume-based pasture system.
Citation
Fillery, I. R. P., "Implications for N Transformations in Acidic Soils of Replacing Annual-Based Legume Pastures with Lucerne-Based Pasture in Dryland Farming Systems of Southern Australia" (2005). IGC Proceedings (1985-2023). 33.
(URL: https://uknowledge.uky.edu/igc/20/satellightsymposium1/33)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Implications for N Transformations in Acidic Soils of Replacing Annual-Based Legume Pastures with Lucerne-Based Pasture in Dryland Farming Systems of Southern Australia
Dublin Ireland
The supply and demand for nitrogen (N) in annual-based pasture-crop rotations in southern Australia is often poorly synchronised, leading to large losses of inorganic N (Fillery, 2001). Perennial pasture species, particularly lucerne, are being recommended to minimise dryland salinity. The implications for N cycling of using lucerne in place of annual legumes on acidic sandy soils that are widespread have not been widely studied. Lucerne is less tolerant of acidity and could fix less N than annual legumes. Lucerne root residues mineralise at slower rates than annual pasture residues with lower N release to subsequent wheat crops (Bolger et al., 2003). The aims of the work were to compare N cycling under lucerne and the traditional annual legume-based pasture system.
