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Effect of nitrogen fertiliser applications on botanical composition


Turner, LR and Donaghy, DJ and Pembleton, KG and Rawnsley, RP, Effect of nitrogen fertiliser applications on botanical composition, Proceedings of the 22nd International Grasslands Congress: Revitalising Grasslands to Sustain our Communities, 15-19 September 2013, Sydney, Australia, pp. 1513-1514. ISBN 978-1-74256-543-9 (2013) [Conference Extract]

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Copyright 2013 Proceedings of the 22nd International Grassland Congress

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The diminishing returns associated with nitrogen (N) fertiliser use over time are well recognised, as are the detrimental effect to the environment of excess N fertiliser use (Eckard 1998). However, many Tasmanian dairy farmers apply continually high rates of N fertiliser (e.g. in excess of 500 kg/ha annually) to minimise risk associated with variable pasture dry matter (DM) yields, and this often occurs at the expense of white clover populations within the pasture (Frame 1990; Frame et al. 1998). The responses of botanical composition and perennial ryegrass DM yields to N fertiliser application rate were investigated in the current field plot study, to provide further information for farmers about the production-related effects of their N use.

Item Details

Item Type:Conference Extract
Keywords:botanical composition, growth rate, nitrogen fertiliser, perennial ryegrass, white clover
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Crop and pasture production
Research Field:Agronomy
Objective Division:Animal Production and Animal Primary Products
Objective Group:Pasture, browse and fodder crops
Objective Field:Non-cereal crops (non-cereal crops for hay/silage/green feed)
UTAS Author:Turner, LR (Dr Lydia Turner)
UTAS Author:Donaghy, DJ (Associate Professor Danny Donaghy)
UTAS Author:Pembleton, KG (Dr Keith Pembleton)
UTAS Author:Rawnsley, RP (Dr Richard Rawnsley)
ID Code:86692
Year Published:2013
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2013-10-11
Last Modified:2014-08-14
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