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Physical Sciences and Mathematics Commons™
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Articles 931 - 960 of 2354
Full-Text Articles in Physical Sciences and Mathematics
Rangeland Reference Areas : Summary Of Cooperative Project Between The Western Australian Department Of Agriculture And The Environmental Protection Authority, D A. Blood
Resource management technical reports
The development of agriculture in south-western Australia has been characterised by the replacement of deep-rooted, perennial species of native vegetation with shallow-rooted, annual species. Except for the high rainfall areas, the native vegetation was able to intercept and transpire nearly all of the rainfall resulting in low stream flows and recharge to a groundwater system which was typically deep and restricted to the major valleys. The lack of surface or groundwater movement out of inland catchments used large quantities of cyclic salts to become stored in the regolith. Although annual crops and pastures can be high water users, they are …
Remnant Vegetation Inventory On The Southern Agricultural Areas Of Western Australia., G R. Beeston, G Mlodowski, A Sanders, D True
Remnant Vegetation Inventory On The Southern Agricultural Areas Of Western Australia., G R. Beeston, G Mlodowski, A Sanders, D True
Resource management technical reports
Remnant vegetation mapping and its incorporation into a Geographical Information System (GIS) data base is the first stage in an overall documentation and promotion of conservation of remnant vegetation in Western Australia. The primary objective of this project being to determine the amount, distribution and regional location of native vegetation remaining on private land in the agricultural area of south-west Western Australia.
Soil Information Sheets For Ravensthorpe And Part Of The Jerramungup Agricultural Areas, Tim D. Overheu, Landcare Western Australia.
Soil Information Sheets For Ravensthorpe And Part Of The Jerramungup Agricultural Areas, Tim D. Overheu, Landcare Western Australia.
Agriculture reports
The soil information sheets produced for the Ravensthorpe Land Conservation District provide an easy reference guide to the soils for part of the Jerramungup and Ravensthorpe agricultural areas, and provide land use and soil management recommendations. Soil data are shown on the front of the sheet, and land use and land management information is given on the back. The information should be used as a guide, and encourage the user to seek further information through the relevant people and organisations.
Native Vegetation Handbook For The Shire Of Merredin, Sarah J. Weaving
Native Vegetation Handbook For The Shire Of Merredin, Sarah J. Weaving
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of Merredin including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of Merredin and possible solutions to these problems are also discussed. Provision of this information will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of York, Sarah J. Weaving
Native Vegetation Handbook For The Shire Of York, Sarah J. Weaving
Native vegetation handbook series
This booklet provides rural communities with information relating to the natural resources of the Shire of York including the original and existing vegetation, fauna and flora, drainage systems, topography and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of York and community initiatives to address these problems are also discussed. It is hoped that this information will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Wyalkatchem, Sarah J. Weaving
Native Vegetation Handbook For The Shire Of Wyalkatchem, Sarah J. Weaving
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of Wyalkatchem including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of Wyalkatchem and possible solutions to these problems are also discussed. Provision of this information will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Tammin, Sarah J. Weaving
Native Vegetation Handbook For The Shire Of Tammin, Sarah J. Weaving
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of Tammin including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of Tammin and possible solutions to these problems are also discussed. By providing this information it is hoped this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of West Arthur, Shaun B. Grein
Native Vegetation Handbook For The Shire Of West Arthur, Shaun B. Grein
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of West Arthur including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of West Arthur and possible solutions to these problems are also discussed. By providing this information it is hoped this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Broomehill, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Broomehill, Shaun B. Grein
Native vegetation handbook series
This booklet is one of a series covering the agricultural region of Western Australia and provides land managers with information relating to some of the natural resources of the Shire of Broomehill including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of Broomehill and where possible solutions to these problems are discussed. By providing this information it is hoped that this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Williams, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Williams, Shaun B. Grein
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of Williams including the existing vegetation, drainage systems and soils.Some of the problems relating to the management of natural vegetation resources in the Shire of Williams and possible solutions to these problems are also discussed. By providing this information it is hoped this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Kojonup, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Kojonup, Shaun B. Grein
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of Kojonup including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of Kojonup and possible solutions to these problems are discussed. By providing this information it is hoped this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Kent, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Kent, Shaun B. Grein
Native vegetation handbook series
This booklet provides agricultural land managers with information relating to the natural resources of the Shire of Kent including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural resources in the Shire of Kent and possible solutions to these problems are also discussed. By providing this information it is hoped this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Woodanilling, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Woodanilling, Shaun B. Grein
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of Woodanilling including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of Woodanilling and possible solutions to these problems are also discussed. By providing this information it is hoped this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Kellerberrin, Sarah J. Weaving
Native Vegetation Handbook For The Shire Of Kellerberrin, Sarah J. Weaving
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of Kellerberrin. This includes the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire and possible solutions to these problems are discussed. By providing this information it is hoped this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Pastoral Resources And Their Management In The North-Eastern Goldfields, Western Australia, H J. Pringle
Pastoral Resources And Their Management In The North-Eastern Goldfields, Western Australia, H J. Pringle
Agriculture reports
This report commences with a brief section in which rangeland survey information is put into a pastoral management context. It then describes the environment in terms of types of rangeland and climate. Types of rangeland are described in terms of pasture types, land systems and land types. A pasture type is a kind of land at a plant community or landform scale. It is what is seen out of the window of a vehicle and what monitoring sites are located on. A land system can be seen as a pattern of pasture types in a characteristic position in the landscape. …
Floristic Survey Of Northern Sandplains Between Perth And Geraldton, Edward Arnold Griffin
Floristic Survey Of Northern Sandplains Between Perth And Geraldton, Edward Arnold Griffin
Resource management technical reports
A database of plant lists from over 2,500 sites was compiled from the the Northern Sandplains between Perth and Geraldton. Over 2,500 plant taxa were recorded from the area. Preliminary classification revealed in the order of 500 different floristic types. Analysis of these demonstrated strong regional patterns of floristic composition related to geology and soils. Consistencies in these patterns indicated a need to review the location of some of the botanical district boundaries.
Native Vegetation Handbook For The Shire Of Mingenew, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Mingenew, Shaun B. Grein
Native vegetation handbook series
This booklet is one of a series covering the agricultural region of Western Australia and provides agricultural land managers with information relating to the natural resources of the Shire of Mingenew including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of Mingenew and where possible, solutions to these problems are also discussed. By providing this information it is hoped this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Corrigin, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Corrigin, Shaun B. Grein
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of Corrigin including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of Corrigin and possible solutions to these problems are also discussed. By providing this information it is hoped this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Katanning, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Katanning, Shaun B. Grein
Native vegetation handbook series
This booklet is one of a series covering the agricultural region of Western Australia and provides land managers with information relating to some of the natural resources of the Shire of Katanning including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of Katanning and where possible solutions to these problems are discussed. By providing this information it is hoped that this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Wickepin, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Wickepin, Shaun B. Grein
Native vegetation handbook series
This booklet provides land managers with information relating to the natural resources of the Shire of Wickepin including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural vegetation resources in the Shire of Wickepin and possible solutions to these problems are also discussed. By providing this information it is hoped this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Native Vegetation Handbook For The Shire Of Narrogin, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Narrogin, Shaun B. Grein
Native vegetation handbook series
The management of native vegetation and agricultural land is closely related. It is vital that both native vegetation and agricultural land issues are considered within the context of their ecological area of influence. Both have a wide range of effects on each other and as a consequence should be managed together. For example native vegetation impacts on the hydrology of agricultural land. Conversely nutrients can be transferred from agricultural land to remnants of native vegetation. This booklet is one of a series covering the agricultural region of Western Australia and provides agricultural land managers with information relating to the natural …
Native Vegetation Handbook For The Shire Of Wagin, Shaun B. Grein
Native Vegetation Handbook For The Shire Of Wagin, Shaun B. Grein
Native vegetation handbook series
This booklet is one of a series covering the agricultural region of Western Australia and provides agricultural land managers with information relating to some of the natural resources of the Shire of Wagin including the existing vegetation, drainage systems and soils. Some of the problems relating to the management of natural resources in the Shire of Wagin and possible solutions to these problems are also discussed. By providing this information it is hoped that this booklet will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the Shire.
Lupin Stubbles : Getting The Best With Weaner Sheep, Keith Croker, Colin Mcdonald, Jeremy Allen
Lupin Stubbles : Getting The Best With Weaner Sheep, Keith Croker, Colin Mcdonald, Jeremy Allen
Journal of the Department of Agriculture, Western Australia, Series 4
Sweet lupins are now grown on about a million hectares in Western Australia each year. If half of the State's seven million weaners were grazed as recommended on half of the lupin stubbles, it could generate about $15 million from reduced supplementary feeding, greater wool production and other advantages. But correct management is important, particularly knowing when to take weaners out. Research by the Department over the last five years is now indicating how this should be done.
Careful Clip Preparation Will Increase Profit, Peter Metcalfe, Ric Collins
Careful Clip Preparation Will Increase Profit, Peter Metcalfe, Ric Collins
Journal of the Department of Agriculture, Western Australia, Series 4
The current wool market has forced wool growers into producing the maximum number of kilograms of quality wool for the least cost. Preparation of the clip is now much more important to maximise possible net returns. Careful clip preparation will ensure that growers receive the maximum overall average price for each kilogram of wool in the clip.
How Sustainable Is Grazing Sheep On Annual Pastures In The Woolbelt?, Don Mcfarlane, Richard George
How Sustainable Is Grazing Sheep On Annual Pastures In The Woolbelt?, Don Mcfarlane, Richard George
Journal of the Department of Agriculture, Western Australia, Series 4
Low wool prices have reduced the profitability of producing wool from clover-based annual pastures in the south-western woo/belt. The heavy reliance on one commodity is economically unsustainable for many farmers. But we should also consider how ecologically sustainable the practice is.
Shallow-rooted annual pastures contribute to widespread salinity in the area, annual legumes are acidifying the soils and making them water repellent, and bare, detached soils from heavy grazing cause sheet and rill erosion during autumn storms. In addition, stock are degrading remnant vegetation and destroying the soil's structure.
To counteract this degradation, the woo/belt needs more perennial pastures and …
No-Tillage Sowing Decreases Water Erosion On Loamy Soils And Increases Earthworm Activity, Kevin Bligh
No-Tillage Sowing Decreases Water Erosion On Loamy Soils And Increases Earthworm Activity, Kevin Bligh
Journal of the Department of Agriculture, Western Australia, Series 4
No-tillage sowing places seed and fertiliser in the soil without loosening all of the topsoil. Soil is cultivated only in the sown rows, leaving the inter-row areas largely undisturbed.
No-tillage sowing reduces both wind and water erosion. Soil structure is generally improved, and pasture regeneration is increased because seed is not buried too deeply for re-establishment.
Two long-term trials were establis_hed on loamy soils to determine effects of tillage and cropping on runoff and soil loss.
Bluegum Timberbelts For Profitable Landcare, Peter Eckersley
Bluegum Timberbelts For Profitable Landcare, Peter Eckersley
Journal of the Department of Agriculture, Western Australia, Series 4
Revegetation with tasmanian bluegums in wide-spaced timberbelts appears to offer high returns, especially in areas where high winds cause crop and stock losses and where land can be saved from salinity and wwaterlogging.
In the South Coast and South-WestRegions, timberbelts will complement existing enterprises and so optimise overall land use. Graziers should be able to maintaine their stock numbers while creating an on-farm superannuation package.
The Department of Conservation and Land Management has been a major player in the development of bluegum timberbelts, but a few farmers are now adapting this concept to better suit their needs. Initial results are …
Land Resources Of The Northam Region, Neil Clifton Lantzke, I Fulton
Land Resources Of The Northam Region, Neil Clifton Lantzke, I Fulton
Land resources series
This report presents soil and landform mapping of about one million hectares in the Avon Valley and central wheatbelt of Western Australia at scale of 1:100,000. The study area spans from the lateritic plateau of the Darling Range to the broad, flat landscape of the wheatbelt and covers four broad physiographic regions: • the Zone of Ancient Drainage; • the Zone of Rejuvenated Drainage; • the West Kokeby Zone; and • the Darling Range Zone. Twenty-five soil landscape units were identified and mapped on the accompanying map sheets. A soil landscape unit is an area of land that occurs in …
Getting The Best From The Woolbelt, Department Of Agriculture And Food, Western Australia
Getting The Best From The Woolbelt, Department Of Agriculture And Food, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Articles in this issue of the Journal of Agriculture discuss prospects for the wool industry and strategies for wool growers to increase their income and their long term viability.
The impact of low wool prices is greatest in the 'woo/belt' (see map) and the southern pastoral region. There is a need to boost the profitability of wool production and to increase income from sources other than wool in these regions.
The Productivity and Diversification Initiative for Wool Growers is refocussing Department of Agriculture resources to assist wool growers reduce costs, increase productivity and diversify into alternative enterprises.
The strategies recommended …
Quality Wool Production At Lower Cost, Peter Metcalfe
Quality Wool Production At Lower Cost, Peter Metcalfe
Journal of the Department of Agriculture, Western Australia, Series 4
Low wool prices are forcing farmers to reduce their sheep management costs but, fortunately, cost cutting is not resulting in lower wool production, poorer wool quality or lessened sheep care on the best wool growing properties.