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Biodiversity

Department of Primary Industries and Regional Development, Western Australia

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Natural resources

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Full-Text Articles in Life Sciences

Re-Assessment Of Carrying Capacities In The Ashburton River Catchment, Alan L. Payne, A M E Van Vreeswyk, K A. Leighton Apr 2004

Re-Assessment Of Carrying Capacities In The Ashburton River Catchment, Alan L. Payne, A M E Van Vreeswyk, K A. Leighton

Agriculture reports

Potential carrying capacities for land systems in the catchment of the Ashburton River were first estimated in 1983 as a result of a rangeland survey of the area undertaken during 1976, 1977 and 1978. Potential carrying capacity (termed capability capacity in the 1988 report) is a suggested sustainable level of use assuming that all pastures are in good range condition, the entire station is adequately watered for the effective management of livestock and seasonal conditions are average. The Ashburton Land Conservation District Committee had previously requested a re-assessment of carrying capacities for Ashburton stations following the widespread establishment of buffel …


Spectacular Recovery In The Ord River Catchment, A L. Payne, I W. Watson, P E. Novelly Jan 2004

Spectacular Recovery In The Ord River Catchment, A L. Payne, I W. Watson, P E. Novelly

Agriculture reports

Regeneration work on severely damaged country in what is now known as the Ord River Regeneration Reserve (ORRR) commenced in 1960. The ORRR is in the East Kimberley area of Western Australia with an associated small area in the Northern Territory. The work included strip contour cultivation and seeding (which proceeded at various levels of intensity during the 1960s, 1970s and 1980s), fencing and destocking of cattle by mustering over many years, and the eradication of donkeys.


Pasture Condition Guides For The Pilbara, A L. Payne, A A. Mitchell Oct 2002

Pasture Condition Guides For The Pilbara, A L. Payne, A A. Mitchell

Agriculture reports

These pasture condition guides are relevant to about 192 000 square kilometres of the Pilbara region of Western Australia. The rangeland of the Pilbara can be separated into 12 very broad pasture types. The ‘pasture type’ is not strictly a botanical classification because, in determining such a class of pastoral lands, the perennial plant species that contribute to stock production have an over-riding importance. Even so, each pasture type represents a broad group of similar vegetation associations or ‘site types’ which will have similar management requirements for pastoralism. The aim of this publication is to provide pastoralists with descriptions and …


A Simplified Key For Assessing The Ecological Significance Of On-Farm Bush Remnants In The Wheatbelt, F Mollemans Mar 1993

A Simplified Key For Assessing The Ecological Significance Of On-Farm Bush Remnants In The Wheatbelt, F Mollemans

Agriculture reports

Many farms today still contain areas of natural bush, yet there is little knowledge about the condition and value of this bush. There is also a wider interest by farmers in this bush because of its perceived value in assisting to combat on-farm salinity, and for diverse other reasons. As a response to the general interest by farmers and others in on-farm bush, a key, produced for use in a remnant vegetation survey of the southern wheatbelt (Mollemans,1992), and which may be used to assess the value of on-farm bush, is being reproduced here.


Navail Spreadsheet, S J. Burgess Jan 1992

Navail Spreadsheet, S J. Burgess

Agriculture reports

A computer program called NPDECIDE has been developed by the Western Australian Department of Agriculture to assist with decisions relating to the use of phosphorus fertiliser on cereal crops. NPDECIDE functions by estimating the response of the crop to combinations of nitrogen and phosphorus fertilisers, and by indicating the likely profit from the use of these materials. In order to carry out this task, NPDECIDE must be able to calculate the availability to the growing plants of nitrogen from the fertilisers and from organic material in the soil.


Reconnaissance Investigation Of Fitzgerald Location 1646 And New Land Adjacent Fitzgerald Location 1998 Mt. Ridley, Tim D. Overheu Feb 1990

Reconnaissance Investigation Of Fitzgerald Location 1646 And New Land Adjacent Fitzgerald Location 1998 Mt. Ridley, Tim D. Overheu

All other publications

No abstract provided.


East Ballidu Catchment Report, L K. Lenane, C Henschke, C Thorne, D Kessell Jan 1989

East Ballidu Catchment Report, L K. Lenane, C Henschke, C Thorne, D Kessell

All other publications

It will require the total cooperation of all members of the Soil Conservation District to remedy the area's problems. The first priority is for the control and better use of water on the recharge areas. The wheat/wheat/lupin rotation at present offers the best economic option. Lupins are well suited to the areas of lighter land. If lupins are planted on waterlogged soils or otherwise unsuitable soils, problems will arise and perhaps prejudice their use on the widespread suitable areas. The use of trees below rocky outcrops is an important measure to prevent excessive recharge of the deeper aquifers. Where trees …


The Agriculture And Land Description Of The Midlands, Wongan Hills And Dalwallinu Districts Of W.A., D N. Sawkins Jun 1981

The Agriculture And Land Description Of The Midlands, Wongan Hills And Dalwallinu Districts Of W.A., D N. Sawkins

Agriculture reports

This report deals with the area of responsibility of the Moora District Office of the W.A. Department of Agriculture. The Moora advisory district consists of seven shires which cover 2,811,400 hectares. Agriculture in the advisory district varies according to climate and soil type, Sheep and cattle production are the main enterprises in the high rainfall (coastal) areas. Mixed cereal sheep production is the main system in the medium and low rainfall areas with cereals increasing in importance as annual rainfall diminishes.