Investigating improved pasture productivity change on the New South Wales tablelands

Vere, David T.

doi:10.1016/s0169-5150(97)00032-7

Cited by 9 publications

(2 citation statements)

References 11 publications

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“…The analysis of these and other data (Vere 1998;D. R. Kemp and D. T. Vere unpublished data) showed that on average, newly sown pastures were carrying 12-14 dry sheep equivalents (dse)/ha in the year sown, particularly from 1970 on.…”

Section: Introductionmentioning

confidence: 94%

Towards sustainable temperate perennial pastures

Kemp¹,

Dowling

2000

Aust. J. Exp. Agric.

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Naturalised pastures across the higher rainfall (>600 mm) perennial pasture zone of south-eastern Australia are less productive than they were, while sown pastures fail to maintain their initial levels of production. Several factors have contributed to this, including lack of knowledge of suitable grazing practices, weed invasion, increasing acid soils, rising water tables and poor management practices during droughts. A key issue in each case is the decline in perennial grass species which is both a cause and effect of the decline in productivity and sustainability of these ecosystems. This paper introduces a volume devoted to the largest collaborative study done to evaluate tactics for better grazing management and to improve the sustainability of perennial pasture ecosystems. Grazing practices to manage the composition of pastures have been largely neglected in pasture research, but are an important first step in improving pasture sustainability. This paper also outlines a new, open communal grazing experimental design which was developed and used across 24 sites on farms in New South Wales, Victoria, Tasmania and South Australia, to evaluate tactics for grazing management. The general aim across these experiments was to maintain (if adequate) or enhance (if degraded), the proportion of desirable perennial grasses in the sward to achieve more sustainable pastures. The results will provide the basis for building more sustainable grazing systems.

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Section: Introductionmentioning

confidence: 94%

Towards sustainable temperate perennial pastures

Kemp¹,

Dowling

2000

Aust. J. Exp. Agric.

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“…This divergence, which resulted in a reduction in soil fertility on sown areas, has been suggested as one of the key reasons for the decline in productivity of legumes in pastures (Vere 1998). In turn, this has influenced livestock production and the productivity and persistence of sown and fertility-responsive grass species (Kemp and King 2001).…”

Section: Introductionmentioning

confidence: 99%

Simulating the impact of fertiliser strategies and prices on the economics of developing and managing the Cicerone Project farmlets under climatic uncertainty

et al. 2013

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Abstract. The application of fertilisers to pastures in the high rainfall regions of southern Australia has contributed to large increases in carrying capacity following the widespread adoption of the practice since the late 1940s. Recently, large shifts in the worldwide demand for fertiliser inputs have lead to large rises in the cost of fertiliser inputs. These increasing costs have significant potential ramifications on the future management of soil fertility and its interaction with the persistence and profitability of sown pastures, especially during periods of climatic uncertainty.A dynamic pasture resource development simulation model was used to investigate the implications of fertiliser rates and costs on the efficient management of soil fertility under climatic uncertainty. The framework also allowed the investigation of how the management of soil fertility interacts with the utilisation of pasture resources through different stocking rates. In the application of this method to the Cicerone Project farmlets case study, fertiliser input costs were found to influence the optimal combination of fertiliser inputs and stocking rate. Analyses of the dynamic interaction between fertiliser application and cost, stocking rate and the persistence of desirable species enabled the identification of the most risk-efficient strategies. The implications for grazing industries in the high rainfall regions of southern Australia are discussed.Additional keywords: climatic uncertainty, dynamic pasture resource model, fertiliser input costs, pasture persistence, risk-efficient frontier.

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Sustainability and economics of temperate perennial Australian grazing systems

Jones¹,

Dowling²

2005

Agriculture, Ecosystems & Environment

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Investigating improved pasture productivity change on the New South Wales tablelands

Cited by 9 publications

References 11 publications

Towards sustainable temperate perennial pastures

Towards sustainable temperate perennial pastures

Simulating the impact of fertiliser strategies and prices on the economics of developing and managing the Cicerone Project farmlets under climatic uncertainty

Sustainability and economics of temperate perennial Australian grazing systems

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