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Articles 1471 - 1500 of 2910
Full-Text Articles in Physical Sciences and Mathematics
An Introduction To The Soils Of The Narrogin Advisory District, T C. Stoneman, Department Of Agriculture And Food, National Soil Conservation Program (Australia)
An Introduction To The Soils Of The Narrogin Advisory District, T C. Stoneman, Department Of Agriculture And Food, National Soil Conservation Program (Australia)
Bulletins 4000 -
Descriptions, illustrations and notes on eight common soils / compiled by T.C. Stoneman.
An Introduction To The Soils Of The Katanning Advisory District, T C. Stoneman, National Soil Conservation Program (Australia)
An Introduction To The Soils Of The Katanning Advisory District, T C. Stoneman, National Soil Conservation Program (Australia)
Bulletins 4000 -
With descriptions, illustrations and notes on eight common soils.
Manual Of Field Techniques In Hydrology, Department Of Agriculture, Western Australia. Division Of Resource Management
Manual Of Field Techniques In Hydrology, Department Of Agriculture, Western Australia. Division Of Resource Management
Agriculture reports
No abstract provided.
Narrow-Winged Seeder Points Reduce Water Erosion And Maintain Crop Yields, Kevin Bligh
Narrow-Winged Seeder Points Reduce Water Erosion And Maintain Crop Yields, Kevin Bligh
Journal of the Department of Agriculture, Western Australia, Series 4
Sowing crops without loosening the topsoil by tillage reduces water erosion. It can increase infiltration of rainfall into loamy soils, thereby reducing runoff and increasing potential crop yields. Crop yields were maintained after I1 seasons of seeding an Avon Valley loam near Beverley with minimum and no-tillage seeding operations. Infiltration increased significantly from 80 per cent of the 1983 growing-season rainfall under the traditional three tillage operations, to 87per cent under a single tillage operation using a combine seed drill. Infiltration increased further to 96 per cent under a no-tillage system using a triple^lisc drill. At Gnowangerup, 80 per cent …
Long Term Management Measures For The Cockburn Sound Restricted Entry Fisheries., P. Millington
Long Term Management Measures For The Cockburn Sound Restricted Entry Fisheries., P. Millington
Fisheries Management Papers
The objective of this management plan is to introduce rules which will ensure there is a real reduction in professional fishing units and fishing effort in the medium to long term. This reduction should enable a small professional fishery to co-exist with the recreational sector, supply fresh fish to the metropolitan area, ensuring there is no proliferation of "shamateur fishing" and providing a supply of recreational angling bait.
Kings Park Soil Survey, J A. Bessell-Browne
Kings Park Soil Survey, J A. Bessell-Browne
Resource management technical reports
No abstract provided.
Horticultural Capability Study Of Soils Adjacent To Plantations At Carnarvon, Western Australia, M R. Wells, J A. Bessell-Browne
Horticultural Capability Study Of Soils Adjacent To Plantations At Carnarvon, Western Australia, M R. Wells, J A. Bessell-Browne
Resource management technical reports
A detailed soil survey and horticultural capability assessment was undertaken over 1,804 ha of land adjacent to existing plantations on levees of the Gascoyne River near Carnarvon. The study provides mapped land resource data and advice in relation to land management and the possibility of further land release for horticulture. In the assessment of horticultural capability primary consideration has been given to the risk of erosion during flood events, to salinity, and to soil drainage conditions.
State Of The Fisheries Report 1990, Fisheries Department Of Western Australia
State Of The Fisheries Report 1990, Fisheries Department Of Western Australia
Status Reports of the Fisheries and Aquatic Resources
The State of the Fisheries is published annually by the Fisheries Department as part of the statutory reporting process required under the Fisheries Act. This report covers developments and production in the State's fisheries up to the end of December 1990. Full details of the department's operations for this period are published separately in the department's annual reports for the financial years ending June 1990 and 1991. Figures provided in the tables are derived from catch returns completed by fishermen which are processed by the Australian Bureau of Statistics up to June 1990. Other information provided in the text comes …
Catchment Drainage : Three Case Studies, Department Of Agriculture, Western Australia. Division Of Resource Management, J E P Green
Catchment Drainage : Three Case Studies, Department Of Agriculture, Western Australia. Division Of Resource Management, J E P Green
Resource management technical reports
Three areas were visited, namely the Coobidge creek catchment in Esperance, the Koolanooka-Bowgada Catchment near Morawa and the Petan Creek Catchment (Winchester catchment) near Carnamah. Each area was advised independently through separate reports and the three reports are collated herein for future reference.
The Impact Of Mining And Mining Exploration On Range Resources And Pastoral Pursuits In The Pilbara, Gascoyne, Murchison And Goldfields Regions Of Western Australia, H J. Pringle, G A. Carter, J L. James, R E Y O'Connor
The Impact Of Mining And Mining Exploration On Range Resources And Pastoral Pursuits In The Pilbara, Gascoyne, Murchison And Goldfields Regions Of Western Australia, H J. Pringle, G A. Carter, J L. James, R E Y O'Connor
Resource management technical reports
Mining activity occurs very widely over relatively small areas of the rangelands. However, it is an intense landuse which can create significant offsite effects. Mining activity is most common around metamorphic 'greenstone' belts and broad drainages. Pastoralists reported both benefits and adverse affects as a consequence of mining activity. The main grievances related to unnecessary and excessive disturbance of pastoral land and the failure of operators to inform the pastoralist of their intentions.
The Australian Lupin Collection - Passport Data For Wild And Semi-Domesticated Accessions Introduced Into Australia To 1990, J. C. Clements, W. A. Cowling
The Australian Lupin Collection - Passport Data For Wild And Semi-Domesticated Accessions Introduced Into Australia To 1990, J. C. Clements, W. A. Cowling
Grain and other field crops published reports
This report contains passport (including collection site) data and Commonwealth Plant Introduction (CPI) numbers for all wild and semi-domesticated Lupinus accessions introduced into Australia to 1990 (a total of 1071 accessions with CPI numbers between 10650 and 122692). Scientists or plant breeders with an interest in the characteristics of wild lupins from certain natural environments, such as high soil pH or low rainfall, will find this information invaluable when they select accessions for their experiments. The majority of the accessions were introduced by Western Australian scientists following collecting missions in the Mediterranean region, and the remainder were donated from institutions …
Future Policy For Charter Fishing Operations In Western Australia., P. Millington
Future Policy For Charter Fishing Operations In Western Australia., P. Millington
Fisheries Management Papers
About 40 boats in Western Australia gain some of their income from taking recreational fishing parties out on charter. Half of these charter boats are also licensed commercial fishing boats. There are few Fisheries Department controls over charter boat fishing at present. However, with increasing tourism and leisure time, there are sound reasons for the Minister for fisheries to tighten up the controls over charter boat fishing to prevent over-exploitation in some areas or on particular stocks.
Toward Better Minimum Tillage For South-Coastal Sandplain Soils, W L. Crabtree
Toward Better Minimum Tillage For South-Coastal Sandplain Soils, W L. Crabtree
Resource management technical reports
Seventeen farmers compared their conventional cropping practices with some form of minimum tillage cropping. The minimum tilled crops yielded 21 percent less grain than the conventionally sown crops. The reasons for these decreased yields were in most cases related to inexperienced management. The minimum tilled treatments usually had very poor weed kill strategies which often resulted in large weeds at sowing, very cloddy seed-beds, and numerous insects in the young crops.
Bulletin No 4191 - Inputs For Beefin, D. J. Barker, P J. May, R. G. Grieve
Bulletin No 4191 - Inputs For Beefin, D. J. Barker, P J. May, R. G. Grieve
Bulletins 4000 -
BEEFIN is a computer model (Barker et at. 1986) that calculates profit maximizing diets for finishing cattle to a specified carcass weight and fat thickness. It predicts cattle growth, feed conversion ratio, final liveweight, number of days on feed and amount of available feedstuffs to finish the cattle to specification.
BEEFIN calculates an enterprise profit and loss budget and performs a sensitivity analysis on cattle and feed price changes. A sensitivity analysis of returns to assets, variable costs and per tonne of feed fed is also calculated.
Bulletin No 4174 - Tree Planting On Farms In High Rainfall Areas, Ken Angell
Bulletin No 4174 - Tree Planting On Farms In High Rainfall Areas, Ken Angell
Bulletins 4000 -
Many of the techniques described in this Bulletin are applicable to broadacre farms. However, they are specifically directed to small rural properties in the high rainfall areas.
Trees can usually serve more than one purpose on small rural properties. They can be used as ornamentals, to provide shelter and shade, for erosion control, as a wildlife habitat, or for waterlogging and salinity control.
Land Management Manual. Merredin Advisory District, F. Frost, M Howell
Land Management Manual. Merredin Advisory District, F. Frost, M Howell
Natural resources published reports
Farming by soil type recognizes that each major soil unit has specific land use capabilities. 'When developing a farm management programme, understanding and appreciating the productive potential and degradation hazard of each soil unit ensures that production systems can be developed which are 'sustainable. The aim of this land management manual is to describe the climatic and geological features of the district and provide definitions of each of the major soil units and 'current management recommendations. The material is designed to be used as an information base for farm planners.
Thes oil units described are for the Merredin advisory district …
State Of The Fisheries Report 1989, Fisheries Department Of Western Australia
State Of The Fisheries Report 1989, Fisheries Department Of Western Australia
Status Reports of the Fisheries and Aquatic Resources
The State of the Fisheries is published annually by the Fisheries Department as part of the statutory reporting process required under the Fisheries Act. This report covers developments and production in the State's fisheries up to the end of December 1989. Full details of the department's operations for this period are published separately in the department's annual reports for the financial years ending June 1989 and 1990. Figures provided in the tables are derived from catch returns completed by fishermen which are processed by the Australian Bureau of Statistics. Other information provided in the text comes from research programs conducted …
Using Pumps And Syphons To Control Salinity At A Saline Seep In The Wallatin Creek Catchment, Richard J. George Dr, P W C Frantom
Using Pumps And Syphons To Control Salinity At A Saline Seep In The Wallatin Creek Catchment, Richard J. George Dr, P W C Frantom
Resource management technical reports
No abstract provided.
Fisheries Research Report No. 89 - Relationships Among Partial And Whole Lengths And Weights For Western Australian Pink Snapper Chrysophrys Auratus (Sparidae), M. J. Moran, C. Burton
Fisheries Research Report No. 89 - Relationships Among Partial And Whole Lengths And Weights For Western Australian Pink Snapper Chrysophrys Auratus (Sparidae), M. J. Moran, C. Burton
Fisheries Research Reports
Pink snapper, Chrysophrysauratus (Sparidae) is one of the major commercial and recreational fish in Western Australian inshore waters. This report presents a number of equations and conversion factors for management and scientific study of the species. Equations to calculate total lengths from partial lengths will facilitate enforcement of minimum legal lengths when snapper are landed in a "head-off" condition. For fisheries science purposes, there are equations to convert among total length, standard length and length to caudal fork; and to convert lengths and weights of processed fish to whole lengths and weights. Length-weight relationships are presented and compared with those …
Miscellaneous Publication 23/90 - The Economic Implications Of Btec Destocking Part Of The West Kimberley Cattle Herd, Bruce Howard
Miscellaneous Publication 23/90 - The Economic Implications Of Btec Destocking Part Of The West Kimberley Cattle Herd, Bruce Howard
Biosecurity published reports
Economic implications of destocking infected breeding cows from the West Kimberley region, as part of the Brucellosis and Tuberculosis Eradication Campaign (BTEC) programme, were studied to evaluate effects on herd size, turn-off, cash surpluses and herd asset value.
Fisheries Research Report No 88 - A Synopsis Of The Biology And The Exploitation Of The Australiasian Pilchard, Sardinops Neopilchardus (Steindachner) Part 1: Biology, W. J. Fletcher
Fisheries Research Reports
There have been a large number of studies which relate to the biology and exploitation of the Australian pilchard, Sardinops neopilchardus. Much of the data, however, are located in journals which are hard to obtain, or in unpublished reports, and theses. With the increase in catch of pilchards, particularly in Western Australia, a collation of all the available knowledge pertaining to pilchards in Australia and New Zealand was desired to help with the planning of future research into the Western Australian stocks of this species. This report contains all the information located on the biology of Sardinops neopilchardus, a companion …
The Future For Recreational Fishing : Issues For Community Discussion., Recreational Fishing Advisory Committtee
The Future For Recreational Fishing : Issues For Community Discussion., Recreational Fishing Advisory Committtee
Fisheries Management Papers
The West Australian Government has initiated a major review of recreational fishing, and how it may be managed for a productive future. This public discussion paper is the first stage in this vitally important review.
Pea And Faba Bean Symbiosis With Rhizobium., J. Evans, C. Wallace, N. Dobrowolski
Pea And Faba Bean Symbiosis With Rhizobium., J. Evans, C. Wallace, N. Dobrowolski
Experimental Summaries - Plant Research
Trial 89WH55, 89KA57, 89M26, 90A12, 90A13, 90M59, 90M60
Location: Merredin, Konnongorring, Dalwallinu, Wongan Hills, Kojonup, Avondale Research Station.
To undertake relevant field studies to establish whether there are constraints to pea and bean symbiosis, arising from management, environment or genetics, and affecting crop N accumulation and productivity.
Trial 90BA60
Using Le-mat (omethoate) insecticide and legume inoculant on seed.
Location: Badgingarra Research Station,
To measure the effect of Lemat on the nodulation and growth of medics and luceme.
Phosphorus Retention Of Sandy Horticultural Soils On The Swan Coastal Plain, Ian Mcpharlin, Neil Delroy, Bob Jeffery, Greg Dellar, Maurice Eales
Phosphorus Retention Of Sandy Horticultural Soils On The Swan Coastal Plain, Ian Mcpharlin, Neil Delroy, Bob Jeffery, Greg Dellar, Maurice Eales
Journal of the Department of Agriculture, Western Australia, Series 4
Soils can be ranked according to their phosphorus retention capacity by the phosphorus retention index (PRI). This is the ratio of phosphorus adsorbed by soil to that remaining in solution under a set of standard conditions. Although it is a laboratory measurement, the PRI seems to be a good indication of what happens in practice.
Rhizoctonia Bare Patch Of Cereals And Lupins. Sterile Red Fungus (Srf) And Control Of Take-All Disease In Wheat., G. C. Macnish
Rhizoctonia Bare Patch Of Cereals And Lupins. Sterile Red Fungus (Srf) And Control Of Take-All Disease In Wheat., G. C. Macnish
Experimental Summaries - Plant Research
Trial 86E31
Rhizoctonia strains and paddock history.
Location: Esperance Downs Research Station ( Paddock C5)
To determine the effects of pasture, cultivation and cropping on Rhizoctonia root rot, Rhizoctonia patch and distribution of patch and non-patch strains of R. spp
Trial 88E39
Rhizoctonia patch mini-plot establishment area.
Location: Esperance Downs Research Station ( Paddock N1B)
To examine the effects of cultivation and minimum tillage in patches in lupins and to provide sites for mini-plot experiment.
Trial 88KO15
Rhizoctonia bare patch establishment area.
Location: Kojaneerup annex.
To establish an area (with a known history) for future research.
Trial 89E12
Rhizoctonia bare …
Virus Diseases In Lupins., R. Jones, Simon Mckirdy, A. R. Baker, J. Stevenson
Virus Diseases In Lupins., R. Jones, Simon Mckirdy, A. R. Baker, J. Stevenson
Experimental Summaries - Plant Research
Trial 90BA12, 90WH17, 90A6, 90MT13
Location: Badgingarra, Wongan Hills, Avondale and Mt Barker.
Cucumber Mosaic Virus - Effect of different levels of infection in seed sown.
Trials were done at Badgingarra and Wongan Hills in which plots were sown with seed of cv. Gungurru which transmitted CMV at rates of 5,, l' and O,. The plots were separated by 30 m wide cereal buffers. The intended plant density of 45 plants/sq m (seeding rate 80 kg/ha) was not achieved at either site because of non-wetting soil problems (Table 1). Establishment of CMV infected seedlings as opposed to healthy ones was …
Leaf Diseases Of Wheat, R. Loughman, Geoff Thomas, J. A. Bathgate, W. R. Smith
Leaf Diseases Of Wheat, R. Loughman, Geoff Thomas, J. A. Bathgate, W. R. Smith
Experimental Summaries - Plant Research
Trial 90PE10
Strategic variety mixtures to reduce septoria diseases of wheat. Evaluation of wheat lines for suitability to mixing for septoria control.
Location: Mt. Barker Research Station
To determine components of partial resistance to both Septoria species to ensure that lines with components that are complimentary are chosen for evaluation as mixtures for Septoria control.
Trial 90MT12 and 90ME10
Assessing effects of a paired variety mixture to reduce Septoria.
Location: Borden and Mt Barker Research Station.
To assess the effects of a variety mixture on Septoria diseases.
Trial 90MT11 and 90JE9
Evaluating variety mixtures to reduce septoria, using a range …
Management Of Lupin Root Rots In The Northern Agricultural Region., W. Macleod
Management Of Lupin Root Rots In The Northern Agricultural Region., W. Macleod
Experimental Summaries - Plant Research
Trial 90GE93
Field survey of lupin root diseases in the northern wheatbelt.
Location: Northern Agricultural Region - majority within Geraldton Advisory District.
To determine the extent, severity and exact nature of fungi causing root and hypocotyl rots of lupins in the northern wheatbelt.
Trial 90GE98
Effect of time of sowing on rhizoctonia infection of lupins.
Location: Woorree.
To examine the effects of sowing lupins at various intervals after the start of the season on the level of Rhizoctonia hypocotyl rot.
Trial 90EC24
Observations on stunt patch on the eradu sandplain.
Location: East Chapman Research Station.
To examine the effects of …
Pleiochaeta Diseases Of Lupins, Mark Sweetingham
Pleiochaeta Diseases Of Lupins, Mark Sweetingham
Experimental Summaries - Plant Research
Trial 90WH20, 90SC5, 90LG8
Rates of dicarboximide fungicides for lupins.
Location: Wongan Hills Research Station, South Carrabin Research Station, East Hyden.
To compare the disease control and yield response of Rovral and Sumisclex seed treatments at a range of rates.
Trial 90M11, 90BA17
Rates of dicarboxide fungicides for lupins.
Location: Merredin Research Station, Badgingarra Research Station.
To compare the disease control and yield response of Rovral and Sumisclex seed treatments at a range of rates,
Can Kangaroos Survive In The Wheatbelt?, Graham Arnold
Can Kangaroos Survive In The Wheatbelt?, Graham Arnold
Journal of the Department of Agriculture, Western Australia, Series 4
One of the costs of agricultural development in Western Australia over the past 100 years has been the loss of most of the native vegetation and, consequently, massive reductions in the numbers of most of our native fauna. Thirteen mammal species are extinct and many bird and mammal species are extinct in some areas. These losses will increase as remnant native vegetation degrades under the impact of nutrients washed and blown from farmland, from the invasion by weeds and from grazing sheep.
Even kangaroos are affected. Unless the community manages remnant vegetation to minimise degradation and enhance the regeneration of …