Physical Sciences and Mathematics Commons^™

Coastal Rehabilitation Manual, Veronica P M Oma, D M. Clayton, J. B. Broun, C D M. Keating

Bulletins 4000 -

Provides an overview of the coastal environment to ensure that the natural environment and coastal processes are considered properly. Describes how to develop a successful coastal rehabilitation strategy and detail rehabilitation techniques applicable to Western Australia. Lists sources of further advice and information.

Integrated Catchment Management : Upper Denmark Catchment, R Ferdowsian, K J. Greenham

Resource management technical reports

The project mapped the landforms and land management units on cleared parts of the catchment ; defined the extent of, processes causing and options for solving the salinity problem in the Upper Denmark Catchment; developed a catchment management plan that would reverse the increasing soil and stream salinity trend within the catchment; encouraged and assisted the landholders to adopt the plan; and applied the results of the study to other areas.

Rangeland Management In Western Australia, Department Of Agriculture, Western Australia

Agriculture reports

Grazing the rangeland - towards and understanding, by Alec Holm and Donald Burnside Rangeland surveys, a basis for improved land use, by Peter Curry and Alan Payne. Monitoring Western Australia's rangelands, by Ron Hacker, David Beurle and Gorge Gardiner. Regenerating the rangelands, by Adrian Williams and Ron Shepherd. Station management planning in the rangelands, by John Morrissey. Planning for future development in the Murchison. Rangelands have many users. Plant regeneration and the control of dust on the South Common, Carnarvon, by Ian Watson. Mine dumps and dust towns, rehabilitation of mined areas and control of dust in the Goldfields. Rehabilitation …

Influence Of Water Supply On Farm Productivity In The North-Eastern Wheatbelt, E J. Hauck

Resource management technical reports

In the area with reliable reticulated water supplies, average what yield, average wool production and average number of sheep per pastured hectare showed a positive correlation with annual rainfall in all but one year. By contrast, in the area served by on-farm water supplies only, average wheat yield and annual rainfall were strongly correlated, whereas average wool production and average number of sheep per pastured hectare showed a weaker correlation with annual rainfall. These correlations suggest tt on farms with a reliable water supply, livestock numbers have been adjusted annually to ensure optimum utilisation of available feed in all seasons.

Effects Of Waterlogging On Crop And Pasture Production In The Upper Great Southern, Western Australia, J F. Wallace, G A. Wheaton, D J. Mcfarlane

Technical Bulletins

Separate estimates of the effect of waterlogging on cereal yields were made using rainfall and crop yield statistics, and remote sensing. Both methods showed that waterlogging costs tens of millions of dollars each year in lost crop production in the Upper Great Southern Statistical Division. The costs will be over $100 m in wet years. Losses in pasture production are likely to be of a similar magnitude, but are harder to quantify.

Monitoring And Managing Soil Acidity, Fionnuala Frost, Extension Officer, Northam

Bulletins 4000 -

This Bulletin provides information on how to identify acid soils and remedy the problem of excessive acidity. Material in this handbook is suitable for broadscale agricultural systems, and perennial and permanent pastures in the medium and higher rainfall areas of the State.

Acidity of both the surface and subsurface layers of soil is addressed. Each can be important in affecting plant growth and therefore the profitability of the farm.

Soils Of The East Beverley Annex Of The Avondale Research Station, Neil Clifton Lantzke

Resource management technical reports

No abstract provided.

An Evaluation Of The Remnant Vegetation Protection Scheme 1988-1991 : A Report, Department Of Agriculture And Food, Western Australia, Soil And Land Conservation Council (W.A.)

All other publications

The objective of the Remnant Vegetation Protection Scheme is to encourage land owners to fence and protect areas of remnant vegetation for the purposes of flora and fauna conservation, land conservation and aesthetics. The means by which land owners are encouraged to protect remnant vegetation is the provision of a grant equal to half the cost of labour and materials to erect a stock-proof fence around the vegetation concerned. The RVPS is jointly administered by the Departments of Conservation and Land Management (CALM) and Agriculture (DAWA), with the latter as the lead agency. CALM contributes substantially to the RVPS through …

Quantifying Loss Of Yield Potential Due To Leaf Disease., B A. Peters, R Loughman

Experimental Summaries - Plant Research

To determine the impact of Septoria and barley yellow dwarf virus on wheat grown under the package approach on the south coast using different levels of fungicide and insecticide control on a susceptible variety of an appropriate maturity for early sowing.

Examine if there is any benefit for disease control of S. tritici from Baytan seed dressing. 92AL16.

Time of sowing and variety effects on the Septoria diseases of wheat. 92AL17.

Time of sowing effect on barley foliar diseases. 92AL19.

Evaluating variety mixtures to reduce Septoria using a range of lines. 92AL24.

Fungicides for control of Septoria nodorum of wheat. …

Stubble Retention For Control Of Wind Erosion, Dan Carter, Paul Findlater, Steve Porritt

Journal of the Department of Agriculture, Western Australia, Series 4

The surest way to control wind erosion in continuous cropping systems is to retain stubble. Over the past ten years, Western Australian research has focused on the amounts of stubble needed to prevent that erosion.

The Role Of Earthworms In Western Australian Agriculture, Tom Mccredie, Lex Parker

Journal of the Department of Agriculture, Western Australia, Series 4

Earthworms have a reputation as soil builders and renovators, particularly among 'organic' farmers and gardeners. They improve soil fertility through increased aeration, aggregation, water infiltration and release of nutrients from organic matter. However, the benefits of earthworms in the wheatbelt have been doubted for many years because of their poor survival in cultivated soils.

Since cropping began in the Western Auslmlian whealbelt over 1OO years ago, the physical condition of many soils has deteriorated. The primary causes of soil degradation were the European cultivation practices used by farmers and the trampling effect of introduced animals. in particular, sheep.

Land Resources Map In The Southern Section Of The Peel-Harvey Catchment, Swan Coastal Plain, Western Australia, Dennis Van Gool, Bev Kipling

Land resources series

Soil-Landscape map prepared to assist nutrient management and land use planning in the southern section of the Peel-Harvey catchment.

Floristic Survey Of Remnant Vegetation In The Bindoon To Moora Area, Western Australia, Edward Arnold Griffin

Resource management technical reports

No abstract provided.

Results Of Stubble Research In Western Australia, Michael Perry, Ron Jarvis, Mel Mason, David Tennant

Journal of the Department of Agriculture, Western Australia, Series 4

Few farmers would question the desirability of retaining stubbles, both for control of erosion by wind and water, and to return organic matter to the soil. While the present debate is focused on the short term management of stubbles, longer term effects also need to be considered.

The Department of Agriculture has several long-running trials intended to measure long term effects.

An Introduction To The Soils Of The Merredin Advisory District, T C. Stoneman, National Soil Conservation Program (Australia)

Bulletins 4000 -

With descriptions, illustrations and notes on nine common soils.

Soils Of The Northam Advisory District. Volume 1. The Zone Of Ancient Drainage, Neil Clifton Lantzke

Bulletins 4000 -

This manual describes the soils of the Department of Agriculture's Northam advisory district. Information is provided on the characteristics of each soil, its capability is discussed and yield estimates for the major land uses are given.

Designed for use by farmers and Department of Agriculture staff, the manual’s primary aims are to:

- Assist with the identification of the advisory district’s soils types

- Match land use with soil quality

- Improve farm productivity and efficiency

- Reduce the incidence of land degradation

Stubble : Friend And Foe, Department Of Agriculture And Food, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

Several articles in this issue of the Journal of Agriculture discuss some of the important issues of stubble management. The articles are condensed from some of the papers presented at a stubble workshop at Geraldton in 1991.

What Brings The First Rains Of The Season?, Ian Foster

Journal of the Department of Agriculture, Western Australia, Series 4

There are two major sources of rainfall over south-western Australia.

Red Kangaroos Can Set Back Range Regeneration, Andrew Mclaughlin

Journal of the Department of Agriculture, Western Australia, Series 4

After years of severe drought, stocking rates in Western Australia s arid rangelands have been kept low since the 1970s to allow native pastures to regenerate. As well, extensive re-seeding programs have started and sheep and cattle grazing on these areas has been restricted or eliminated. However, pasture regeneration in the rangelands can only succeed when grazing by all animals - sheep, cattle, kangaroos, goo.ts, camels, brumbies and donkeys - is controlled Many more red kangaroos roam throughout Western Australia's pastoral areas today than 20 years ago. The installation of windmills and troughs to water domestic livestock has allowed kangaroo …

Taking The Emu To Market, Paul Frapple, Ruth Hagan

Journal of the Department of Agriculture, Western Australia, Series 4

Licensed, commercial emu farming in Western Australia is now five years old.

This year, 13,500 birds will be processed for their meat, skin and oil. Production has exceeded demand at prices which the industry considers fair because the industry is still developing marketd for these producys.

Without secure, long term markets, over-production will worsen as the turn-off in this State increases and emus become available from other Australian states and overseas.

The Department of Agriculture is assisting the industry to develop a viable industry.

New Yellow Serradella Varieties For Low Rainfall Pastures, Clinton Revell

Journal of the Department of Agriculture, Western Australia, Series 4

Large areas of acidic, sandy soils in Western Australia's low and medium rainfall, wheatsheep areas are suited to the pasture legume, yellow serradella.

In the past, a lack of varieties with suitable maturity has limited the use of this species.

New varieties developed in Western Australia and significantly earlier in maturity than traditional types can now extend the use of yellow serradella into these regions.

Groundwater Investigations In The Jerramungup Shire, S B. Martin

Resource management technical reports

Drilling was carried out with a dry rotary auger rig, with a depth limit of 31 m for the first 28 piezometers and 40 m thereafter. Farmers assisted in the site selection and construction of the piezometers in most cases and will in the future be responsible for monitoring their piezometer(s) regularly. The average depth to bedrock was 18 m and the average dept to groundwater was 9 m, with an average salinity level of 3600 mS/m. The average total salt storage was approximately 2800 tonnes per hectare.

Land Reclamation In The North Stirling Land Conservation District, M F. Lewis, National Soil Conservation Program (Australia)

Resource management technical reports

Investigations were carried out to determine the interaction between the lakes and groundwater systems, the influence of bedrock structures on groundwater flow, and the regional flow characteristics in the basin. The hydrological investigations showed that water does flow from lakes to the groundwater system. However, the benefits from draining land have to be compared with the benefits of not adding water to the lakes. A basin water balance showed that most of the excess water resulting from reduced epotranspiration since clearing remains in the basin as increased groundwater storage. Only relatively small quantities of the extra water leave the basin …

Deep Drains : A Case Study And Discussion, Russell John Speed, John Andrew Simons

Resource management technical reports

Typically, deep, open drains are about 2 in deep and about 1 in wide at the base and dug with a backhoe or excavator. The movement of groundwater is controlled by two factors. One is the physical ability of the material to transmit fluid. Permeability is the measure used to describe the ability of a material to transmit fluid through pores and cracks. It depends largely upon porosity (the percentage of the total volume of thematerial that is pore space) and the degree of interconnectedness of the pore spaces. The other factor controlling groundwater flow is gradient. George (1985) found …

Fodder Trees And Shrubs For High Rainfall Areas Of South Western Australia, Daya Patabendige, P R. Scott, Edward C. Lefroy

Resource management technical reports

In south Western Australia, the lack of good quality feed in late summer and autumn is a major constraint to livestock production. This feed gap is usually filled by costly supplementary hand feeding of grain or hay. The ability of some trees and shrubs to provide good quality forage during summer and autumn has generated interest for many years (Corbett, 1951; Everist, 1969; Snook, 1987;Oldham et al., 1991, Lefroy, 1991). The dual benefits of reducing the need for supplementary hand feeding and deferring the grazing of annual pastures until they are well established has recently led to the recognition of …

Wider Spaced Rows For Lupins, Ron Jarvis

Journal of the Department of Agriculture, Western Australia, Series 4

In this farm scale trial at Wongan Hills, a lined combine was used to seed lupins into rows spaced 380 mm apart in wheat stubble.

Soils Of The Northam Advisory District. Volume 2. The Zone Of Rejuvenated Drainage, Neil Clifton Lantzke

Bulletins 4000 -

This manual describes the soils of the Department of Agriculture's Northam advisory district. Information is provided on the characteristics of each soil, its capability is discussed and yield estimates for the major land uses are given.

Designed for use by farmers and Department of Agriculture staff, the manual’s primary aims are to:

- Assist with the identification of the advisory district’s soils types

- Match land use with soil quality

- Improve farm productivity and efficiency

- Reduce the incidence of land degradation

Land Resources Of The Kellerberrin Region, William Morrison Mcarthur

Resource management technical reports

The landforms and associated soils in the Kellerberrin area (Figure 1) were mapped using a combination of air photo interpretation (1:50,000 black and white, 1984 photography) and ground traverses along roads and tracks. Mapping units used are similar to those described by Bettenay and Hingston (1961; 1964) and Hingston and Bettenay (1961) for the Merredin district. The present survey may be seen as a western extension of the Merredin survey; it adjoins the work of Lantzke (in prep) on the west

How To Reduce Spending On Land Conservation, Tim Negus

Journal of the Department of Agriculture, Western Australia, Series 4

Heavy spending on capital works for land conseroation is usually out of the question in the present financial climate, but the recession does not mean that landcare must be abandoned. There are many aspects of landcare that involve little or no extra cost. Soil conseroationist Tim Negus discusses them in this article.

Land Resources Study Of The Carnarvon Land Conservation District And Part Of Boolathana Station, Western Australia, M R. Wells, C D M Keating, J A. Bessell-Browne

Land resources series

A survey of the land resources of 36,343 ha covering the Carnarvon Land Conservation District and an adjoining portion of Boolathana station was conducted to assist future land use planning and management. This report describes the soil, landform and vegetation conditions of land units shown on an accompanying 1:50,000 scale map. These land units are components of land systems previously mapped at 1:250,000 scale for the Carnarvon Basin by Payne et al. (1987). As part of the study, further, more detailed land resource mapping and land capability assessments were conducted at specific locations. Land use planning and management considerations arising …