Physical Sciences and Mathematics Commons^™

Water Erosion In The Geraldton Area During June-July 1986, K J. Bligh

Resource management technical reports

No abstract provided.

A Review Of Machinery For Cropping With Reduced Water Erosion, K J. Bligh

Resource management technical reports

No abstract provided.

Management Of Native Vegetation On Farmland In The Wheatbelt Of Western Australia, A M. Coates

Resource management technical reports

Clearing in the wheatbelt region of Western Australia has been rapid and extensive. The mapping of remnant vegetation in the shires of Dumbleyung, Lake Grace, Pingelly and Tammin with the use of the most recent aerial photography (1984) demonstrates the extent of clearing especially in the old established farming areas. Only 7 per cent of the Tammin shire had been retained under native vegetation, 10 per cent of the Dumbleyung shire and 14 per cent of the Pingelly shire. In the Lake Grace shire where large areas have only recently been developed for agriculture, approximately 31 per cent had been …

An Assessment Of Land Capability For Residential Land Uses : Babbage Island, Carnarvon, Western Australia, M R. Wells, Veronica P M Oma

Resource management technical reports

No abstract provided.

Preliminary Groundwater And Salinity Investigations In The Eastern Wheatbelt. 3. Welbungin And Beacon River Catchments, Richard J. George Dr, P W C Frantom

Resource management technical reports

Water-tables show no obvious signs of a nett annual rise in the bores monitored in the valley floor, lower slope areas over the three year period. Groundwaters are extremely saline, the sedimentary and saprolite aquifers permeable (hydraulic conductivity range 0.1-2.0 m/day) (0.0001). Future management systems should seek to decrease recharge by changing rotations and farm practises while increasing discharge by using trees, pumps and halophytes. Options are available for drainage.

Drains : A Method Of Financially Assessing Drains Used To Mitigate Waterlogging In South-Western Australia, John S. Salerian, D J. Mcfarlane

Resource management technical reports

Seepage interceptor drains are often effective in mitigating waterlogging in duplex (sand over clay) soils on hill slopes in the sout-west. Spoon and W drains are sometimes effective in removing excess surface waters form clay flats.

This report outlines a method to determine the long-term (1 to 20 years) cost-effectiveness of installing drains to mitigate waterlogging for each individual situation.

The Soils Of Falls Farm Catchment Cuballing Western Australia R.A. Sudmeyer., Robert Anthony Sudmeyer

Resource management technical reports

No abstract provided.

The Soils Of South Carrabin Research Station -Light Land Annex, Henry Smolinski, G G. Scholz

Resource management technical reports

No abstract provided.

Evaluation Of Risk Factors Leading To Soil Destabilisation On The South Coastal Sandplain Of Western Australia, R V R Gwynn, P A. Findlater, J R. Edwards

Resource management technical reports

The problems of wind erosion in part of the south coast of Western Australian sandplain area were described previously (Gorddard et al, 1981) with 7.3 per cent of cleared and 18.3 per cent of the cropped area showing evidence of sand blasting. Department of Agriculture trials have shown that the loss of the top four millimetres of top soil from pastured paddocks can reduce following crop yields by up to 20 per cent (Marsh and Carter, 1983). Animal production problems associated with wind erosion of soils have not been quantified, but a number of problems such as reduced carrying capacity …

Water Erosion Survey In The Northam District After Storms In June 1986, D J. Mcfarlane, A T. Ryder

Resource management technical reports

No abstract provided.

Consumption Of Water By Livestock, G J. Luke

Resource management technical reports

No abstract provided.

The Land Resources And Carrying Capacity Of Gascoyne Locations 228 And 229, North Of Carnarvon, Western Australia, M R. Wells, Veronica P M Oma, Alexander Mcrae Holm

Resource management technical reports

No abstract provided.

Water Use By Some Crops And Pastures In The Southern Agricultural Areas Of Western Australia, R A. Nulsen, I N. Baxter

Resource management technical reports

No abstract provided.

Storage Life Of Farm Dams, G J. Luke, C G. Denby

Resource management technical reports

No abstract provided.

Survey Of Research Priorities In Water Erosion, Waterlogging And Flooding In South-Western Australia, D J. Mcfarlane, E G. Barrett-Lennard

Resource management technical reports

No abstract provided.

Investigation Of A Saline Valley On Allandale Research Farm, D J. Mcfarlane, R Engel, A T. Ryder

Resource management technical reports

Geophysical surveys and drilling were used to investigate a saline valley on Allandale Research Farm. These techniques showed that the geology is controlling the location of two main areas of saline seeps and they identified another area at risk of increased salinity. They were also used to obtain information on the groundwater system and to assist in making management recommendations.

Electromagnetic terrain conductivity surveys showed that the most saline soils occurred upstream of a cross-cutting magnetic anomaly caused by a dolerite dyke. A seismic survey showed that the anomaly coincided with a bedrock rise. This bedrock rise restricts groundwater flow …

The Economics Of Saltland Agronomy, John S. Salerian, Clive Malcolm, Eddie Pol

Resource management technical reports

No abstract provided.

Evaporation Data For Western Australia, G J. Luke, K L. Burke, T M. O'Brien

Resource management technical reports

No abstract provided.

Banks : A Method Of Financially Assessing Banks Used To Mitigate Water Erosion In South-Western Australia, John S. Salerian, D J. Mcfarlane

Resource management technical reports

No abstract provided.

Estimation Of Runoff Volumes For Ungauged Catchments In The Agricultural Areas Of Western Australia, J R. Davies, D J. Mcfarlane

Resource management technical reports

Describes an analysis of flood runoff volumes from 16 small, gauged catchments in the agricultural areas of south western Australia. It also describes methods for estimating flood runoff volumes from ungauged catchments. The independent variables found to be statistically significant in explaining the variability in flood runoff volumes from the gauged catchments were catchment area, mean annual rainfall and the percentage of the catchment that was cleared. No soil factor was found to be significant.