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Articles 2761 - 2790 of 2907
Full-Text Articles in Physical Sciences and Mathematics
Kimberley Research Station Progress Report, 1964 : Climate, Jan Jerzy Basinski, E. A. Fitzpatrick, W. R. Stern
Kimberley Research Station Progress Report, 1964 : Climate, Jan Jerzy Basinski, E. A. Fitzpatrick, W. R. Stern
Journal of the Department of Agriculture, Western Australia, Series 4
A review of recent research in climate, soils, tropical crops and pastures, weeds, insect pests and cattle husbandry at the Kimberley Research Station.
EXTENSIVE climatic data are recorded at the Station and analysed in relation to crop performance, irrigation requirements, and farm management practices.
Puccinellia : Outstanding Saltland Grass, C V. Malcolm, S. T. Smith
Puccinellia : Outstanding Saltland Grass, C V. Malcolm, S. T. Smith
Journal of the Department of Agriculture, Western Australia, Series 4
"Puccinellia" is a tussocky perennial grass with an outstanding ability to survive salty and waterlogged conditions.
Considerable areas of saltland in Western Australia are suited to its growth.
Seed is now available commercially and in this article the conditions to which the grass is suited are described and establishment and management methods are suggested.
Seed And Pasture Rates For New Dairy Pastures, F E. Ryan
Seed And Pasture Rates For New Dairy Pastures, F E. Ryan
Journal of the Department of Agriculture, Western Australia, Series 4
THE success or failure of pasture establishment on new land often depends on the interaction of rate of seeding and rate of superphosphate application.
Every year large areas of virgin land are cleared and sown to pasture in the higher rainfall areas, and all-too often the new pasture is not as successful as it should be because too little super is applied, and, in some cases, too little seed.
Lot Feeding Of Beef Cattle. 3. Facilities Required For A Feed Lot, W J O Wilkie
Lot Feeding Of Beef Cattle. 3. Facilities Required For A Feed Lot, W J O Wilkie
Journal of the Department of Agriculture, Western Australia, Series 4
MANY THINGS must be considered in planning a feed lot.
The site must be well chosen, fencing, gates and yards must be adequate for the cattle carried and feeding and watering facilities should be of a high standard.
Other things to consider are the provision of shelter and shade for the cattle and buildings for feed storage and other purposes.
How To Measure The Capacity Of Farm Dams, G Gauntlett
How To Measure The Capacity Of Farm Dams, G Gauntlett
Journal of the Department of Agriculture, Western Australia, Series 4
AT some time or another nearly every farmer needs to be able to measure the capacity of an ordinary farm dam of the "excavated earth tank" type and many requests are made for a method of calculating this volume.
This article describes how this can be done.
Wheat Quality Surveys In Western Australia. 2. Variation Between Seasons And Localities In The Production Of High And Low Protein Wheat, J A. Parish
Journal of the Department of Agriculture, Western Australia, Series 4
Although the protein content of West Australian f.a.q. wheat averages only 9.4 per cent., often substantial amounts of comparatively high protein wheat are contained in this mixture.
However the quantity varies widely from year to year and is obtained from widely scattered areas of the wheatbelt.
Fisheries Report No I (1) - The Shark Bay Fishery On Snapper Chrysophrys Unicolor (Quoy And Gaimard), B. K. Bowen
Fisheries Report No I (1) - The Shark Bay Fishery On Snapper Chrysophrys Unicolor (Quoy And Gaimard), B. K. Bowen
Fisheries Research Reports
As regards both catch and value, the Shark Bay snapper fishery is the second most important scale fishery in Western Australia. Until 195%, the fishing was done solely by means of hard-lines operated from beats drifting over the snapper patches. In 1959 traps were first used with great success and in 196) this method of fishing was again the principal technique.
Prior to the 1960 season there were several suggestions that the use of traps would have a deleterious effect on the fishery. On October 19, 1959, the Western Australian League of the Professional Fishermen's Association wrote to the Fisheries …
Soil Conservation : Build Contour Banks With A Disc Plough, G W. Spencer, D. J. Carder
Soil Conservation : Build Contour Banks With A Disc Plough, G W. Spencer, D. J. Carder
Journal of the Department of Agriculture, Western Australia, Series 4
Heavy earthmoving machinery is not necessary for contouring; most farmers are already equipped to do the job themselves.
This article by soil conservation advisers G. W. Spencer and D. J. Carder tells how to build contour banks with a disc plough.
Dairy Farming In The Busselton-Margaret River District. Part 1. Stage Of Development, R A. Bettenay
Dairy Farming In The Busselton-Margaret River District. Part 1. Stage Of Development, R A. Bettenay
Journal of the Department of Agriculture, Western Australia, Series 4
This article is the first of four in a series reporting a survey of farming practices in the Busselton-Margaret River area.
Besides the development of farms the series will cover farm stocking rates and milk production on farms in the area.
THE survey of farms in the Busselton-Margaret River district began at the end of the 1962 season.
Information on the stage of development of the properties was obtained from 94 farmers during advisory visits.
Treating Severe Saltland, Department Of Agriculture, Western Australia
Treating Severe Saltland, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
THE illustration shows a large area of severely salt affected land near Narembeen.
Before treatment, sheep had access to the area and in summer broke the topsoil into a fine powder which lifted to form dust storms with every good breeze.
Soil Conservation : Contour Banks Must Be Maintained, D J. Carder, G. W. Spencer
Soil Conservation : Contour Banks Must Be Maintained, D J. Carder, G. W. Spencer
Journal of the Department of Agriculture, Western Australia, Series 4
The wet winter of 1963 showed up faults in many contour bank systems and emphasised that banks won't last forever without maintenance.
This article tells where to look for weaknesses and how to treat them.
Soil Erosion And Farm Water Supplies, J C. Grasby, J. E. Watson
Soil Erosion And Farm Water Supplies, J C. Grasby, J. E. Watson
Journal of the Department of Agriculture, Western Australia, Series 4
Water supplies for stock have an important influence on farm management.
In this article Soil Conservation Advisers J. C. Grasby and J. E. Watson discuss problems of soil erosion and farm water supplies.
Grade Herd Recording, 1963-64, Maurice C. Cullity
Grade Herd Recording, 1963-64, Maurice C. Cullity
Journal of the Department of Agriculture, Western Australia, Series 4
A review of Grade Herd Recording during the 1963-64 season.
THERE was a substantial increase in the number of cows which were recorded in 1963-64 compared with 1962-63 (23,520 and 22,635 respectively).
This season's figure represents 20.4 per cent, of all cows in the dairying districts.
The number of cows which completed lactation and therefore whose yields were included in the averages, rose from 17,258 to 19,011.
Opposed Disc Plough Furrows Hard Kimberley Soils, Department Of Agriculture, Western Australia
Opposed Disc Plough Furrows Hard Kimberley Soils, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
THE work of reclaiming the eroded areas of the Ord River catchment has posed special problems for field staff of the Department of Agriculture engaged on this large scale project.
Thousands of miles of furrows must be contour-ploughed and seeded in extremely hard ground over big areas of eroded country.
Migratory Movements Of Emus And Control Efforts, John L. Long, T. J. Tozer
Migratory Movements Of Emus And Control Efforts, John L. Long, T. J. Tozer
Journal of the Department of Agriculture, Western Australia, Series 4
ALTHOUGH little data has been recorded on movements or migrations of the Emu (Dromaius novea-hollandiae), it is well known throughout the farming community that some such movement occurs in September and October in most years at least.
Modern Methods Boost Apple Production In A South-West Orchard, N H. Shorter
Modern Methods Boost Apple Production In A South-West Orchard, N H. Shorter
Journal of the Department of Agriculture, Western Australia, Series 4
A WELL-KNOWN South-West apple orchard with an impressive cropping record is owned by W. F. & E. M. Dilley and Sons, of Upper Capel, near Donnybrook.
Trees in this orchard have been producing consistently heavy crops for many years and, furthermore, yields have increased steadily over a 10-year period.
Put Garden Rubbish To Work In A Compost Heap, W Dawson
Put Garden Rubbish To Work In A Compost Heap, W Dawson
Journal of the Department of Agriculture, Western Australia, Series 4
THERE'S a surprising amount of mumbo jumbo written about the simple compost heap. By the time you've waded through all the instructions, you feel as if you ought to have prerequisites of a doctorate in soil chemistry or an unbroken ancestry of at least three generations of professional English gardeners.
Soil Erosion By Water In W.A. Cropland : A Serious And Widespread Problem, Department Of Agriculture, Western Australia
Soil Erosion By Water In W.A. Cropland : A Serious And Widespread Problem, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Much wheatbelt agriculture is based on thin topsoils which are inherently infertile by world standards. Erosion even to the depth of cultivation will cause the loss of:—
• most of the original topsoil
• the phosphate build up from years of "super" applications
• any accumulation of organic matter and humus.
Salt Land Survey, 1962 : Report Of A Survey Of Soil Salinity In The Agricultural Areas Of Western Australia, L C. Lightfoot, S. T. Smith, C. V. Malcolm
Salt Land Survey, 1962 : Report Of A Survey Of Soil Salinity In The Agricultural Areas Of Western Australia, L C. Lightfoot, S. T. Smith, C. V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
IN Western Australia there are within the agricultural areas about one million acres of salt land, largely within the 14-25 inch rainfall area used for cereal and wool production.
In March, 1962, farmers in 68 shires in the agricultural areas of Western Australia estimated that on their properties 305,270 acres of land previously cropped or sown to pasture had become salt affected. Of this total, 59,203 acres had gone salt in the seven years immediately before the survey.
Agriculture In The Lakes District : Report Of A Survey Of Farm Practices, A W. Hogstrom
Agriculture In The Lakes District : Report Of A Survey Of Farm Practices, A W. Hogstrom
Journal of the Department of Agriculture, Western Australia, Series 4
At the request of the Central South Zone Development Committee a survey which covered 58 farms in the Lakes District was carried out by officers of the Department of Agriculture. Field work for the survey started in 1961.
The Lakes District supports about 70 holdings adjoining a chain of salt lakes to the east of Newdegate and Hyden but west of the No. 1 Rabbit Proof Fence.
The chain of lakes is about 70 miles long running in a N.N.W. to S.S.E. direction. The lakes are O'Connor, Carmody, Hurlstone, Varley, Gulson, Fox, Camm, King, and Pal lamp.
Set Stocking Has A Place In Soil Conservation Farming, J E. Watson
Set Stocking Has A Place In Soil Conservation Farming, J E. Watson
Journal of the Department of Agriculture, Western Australia, Series 4
Set stocking of sheep at increased stocking rates is rapidly becoming popular with farmers in the agricultural areas of Western Australia.
But will set stocking increase soil erosion hazards? It should do just the reverse, according to Soil Conservation Adviser J. E. Watson, B.Sc, who claims that set stocking has a place in soil conservation farming.
Crossings For Channels And Drains In The Ord River Area, K S. Cole
Crossings For Channels And Drains In The Ord River Area, K S. Cole
Journal of the Department of Agriculture, Western Australia, Series 4
ON farms irrigated by surface methods it is essential to provide crossings over channels and drains.
These crossings must be wide and strong enough to take the biggest farm machinery.
Planning New Farm Dams : Excavated Earth Tanks, J E. Watson, J. C. Grasby
Planning New Farm Dams : Excavated Earth Tanks, J E. Watson, J. C. Grasby
Journal of the Department of Agriculture, Western Australia, Series 4
A GOOD farm dam is a valuable asset, and well worth its cost, but there are many aspects to consider when a new dam is required. Careful planning with adequate testing and checking will help to get the best value for money and reduce the chance of costly failures.
This article discusses these aspects in relation to the excavated earth tank type of dam.
Fisheries Report Ii (2) - Preliminary Report On The Effectiveness Of Escape-Gaps In Crayfish-Pots, B. K. Bowen
Fisheries Report Ii (2) - Preliminary Report On The Effectiveness Of Escape-Gaps In Crayfish-Pots, B. K. Bowen
Fisheries Research Reports
The Western Australian commercial crayfish, Panulinrus cy,nus George, (1962)", is caught in depths ranging from a few feet to approximately 45 fathoms. In the shallow waters large numbers of crayfish measuring, less than the legal minimum length are brought to the surface in the standard commercial crayfish pots. The law requires that these undersize crayfish be returned to the sea, but there is always the temptation to retain them for illegal sale. In addition, the undersize crayfish which are returned to the sea are often damaged by handling. The probability is that their mortality rate is higher than those which …
Saltland Notes : Don't Put Sheep In Yet, Department Of Agriculture, Western Australia
Saltland Notes : Don't Put Sheep In Yet, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
If you have sown bluebush or saltbush this year, keep the sheep out.
Land Preparation For Border Irrigation, B Swan
Land Preparation For Border Irrigation, B Swan
Journal of the Department of Agriculture, Western Australia, Series 4
LARGE amounts of water may be lost through excess run-off and deep percolation.
Proper preparation of irrigation land can help to minimise these losses.
This preparation is done by grading or levelling so that the original ground surface is shaped to allow for a more uniform distribution of water.
Progress In The Control Of Cotton Fireweed, Geoffrey A. Pearce
Progress In The Control Of Cotton Fireweed, Geoffrey A. Pearce
Journal of the Department of Agriculture, Western Australia, Series 4
Cotton Fireweed (Erechtites quadridentata) is native to Western Australia and was first collected by Drummond before 1850. In its natural habitat it is quite insignificant and passes unnoticed.
Cotton fireweed, a native perennial plant, has become a serious weed in the south coastal districts and is now one of the most widespread weeds in the State.
Beef Cattle In Western Australia : A Survey, W J O Wilkie
Beef Cattle In Western Australia : A Survey, W J O Wilkie
Journal of the Department of Agriculture, Western Australia, Series 4
B EEF CATTLE numbers have increased in Western Australia year by year for the past eight years, and there have been some dramatic changes in the industry.
Swing Fence Flood Crossing For Creeks In The Kimberleys, A L. Payne
Swing Fence Flood Crossing For Creeks In The Kimberleys, A L. Payne
Journal of the Department of Agriculture, Western Australia, Series 4
FENCING is the basis of the regeneration programme on the eroded Ord River catchment area, and the fences constructed must cross numerous creeks.
But heavy downpours of short duration characterise the wet season experienced in this area.
Because the rain falls on to bare, compacted ground, run-off is intense and gullies and creeks rise rapidly, causing serious damage to conventional fences and flood gates across watercourses.
Profitable Returns From Saltland, C V. Malcolm
Profitable Returns From Saltland, C V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
The recent saltland survey disclosed that about 305,000 acres of land previously cleared and sown had become salt affected.
This represents a serious loss in production but is offset by the fact that much of the land is capable of producing high yields of good quality fodder.