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Full-Text Articles in Life Sciences
Effect Of Nitrogen Fertiliser Applications On Botanical Composition, Lydia R. Turner, Daniel J. Donaghy, Keith G. Pembleton, Richard P. Rawnsley
Effect Of Nitrogen Fertiliser Applications On Botanical Composition, Lydia R. Turner, Daniel J. Donaghy, Keith G. Pembleton, Richard P. Rawnsley
IGC Proceedings (1997-2023)
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 …
Rhizobium-White Clover Symbiosis And Nitrogen Fixation Along A Soil Organic Carbon Gradient, Pieter A. Swanepoel, Philip R. Botha, Wayne F. Truter, A. Karen J. Surridge-Talbot, Alicia Van Der Merwe
Rhizobium-White Clover Symbiosis And Nitrogen Fixation Along A Soil Organic Carbon Gradient, Pieter A. Swanepoel, Philip R. Botha, Wayne F. Truter, A. Karen J. Surridge-Talbot, Alicia Van Der Merwe
IGC Proceedings (1997-2023)
Sustainable cultivated pasture production in the southern Cape region of South Africa requires management practices that will support soil quality (Swanepoel and Botha 2012). Soil organic carbon (Corg) sequestration is regarded as one of the most important ways to promote soil quality. Dairy farmers in the southern Cape attempt to increase Corg by following minimum-tillage practices. These irrigated dairy-pastures require high levels of nitrogen (N) to maintain highly productive pastures. Nitrogen fertilisers have be-come very expensive and severely strain profitability of these dairy-pastures. Forage legumes are frequently incorporated into the grass pastures to overcome economic and environmental …