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Enhancing pasture stability and profitability for producers in Poplar Box and Silver-leaved Ironbark woodlands.

Silcock, R.G. and Jones, P. and Hall, T.J. and Waters, D.K. (2005) Enhancing pasture stability and profitability for producers in Poplar Box and Silver-leaved Ironbark woodlands. Project Report. Meat & Livestock Australia Limited.

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Publisher URL: http://www.mla.com.au

Abstract

Over 7 years, this project collected data about the pasture, tree and soil surface dynamics of two major Aristida/Bothriochloa pasture types within the eucalypt woodlands of central Queensland. Six different grazing management scenarios were compared ecologically and economically, along with the effects of spring burns and tree killing.

Heavy stocking (3-4 ha per adult equivalent) produced the greatest short-term financial return from healthy pastures but was not a sustainable practice and long-term cash returns were no better than those from moderate stocking. The environmental benefits of moderate grazing over heavy grazing were very clear. Light stocking produced better environmental outcomes compared to moderate stocking but was clearly inferior with respect to economic returns. Killing silver-leaved ironbark trees near Rubyvale produced no measurable improvement in pasture growth or quality for at least 6 years whereas at Injune the same treatment of poplar box trees resulted in an immediate and large enhancement in pasture production and carrying capacity. The gritty red duplex soil at Rubyvale was much more erodible than the grey solodic at Injune although the latter becomes very erodible if the stable surface soil is breached.

Good seasonal rainfall produced faster changes in pasture composition than extremes of grazing management. The perennial grasses were easier to recruit than to eliminate by grazing management changes.

Item Type:Monograph (Project Report)
Corporate Creators:Department of Employment, Economic Development and Innovation (DEEDI), Agriculture and Food, DPI&F, Meat & Livestock Australia Limited
Projects:Project code: NAP3.208.
Business groups:Agriculture and Food
Additional Information:© Meat & Livestock Australia Limited.
Keywords:Final report ; Pastures; grasslands; grazing management; stocking; woodlands; trees; soil surface dynamics; sediments; coastal regions; the Great Barrier Reef; Queensland ; final report
Subjects:Forestry > Sylviculture
Agriculture > Agriculture (General) > Agriculture and the environment
Agriculture > Agriculture (General) > Soils. Soil science
Deposited On:20 Feb 2012 07:43
Last Modified:16 Feb 2016 07:10

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