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Articles 2071 - 2100 of 2353
Full-Text Articles in Physical Sciences and Mathematics
Soil And Plant Analysis For Mineral Deficiencies, M D. Carroll
Soil And Plant Analysis For Mineral Deficiencies, M D. Carroll
Journal of the Department of Agriculture, Western Australia, Series 4
Soil and plant analysis (testing) has its supporters and its critics. Some of the differences are resolved if the distinction is made between the concept and the practice. Most people would agree with the concept of soil and plant analysis but the practice, or service offered, in any agricultural situation can be subject to valid criticism.
This article defines some of the principles involved and illustrates some of the problems, to provide a better understanding of the usefulness and the limitations of soil and plant analysis as a diagnostic aid in plant and animal nutrition.
Long Term Rotation Trials, I C. Rowland
Long Term Rotation Trials, I C. Rowland
Experimental Summaries - Plant Research
LONG TERM ROTATION TRIALS The results shown are the yield of grain harvested from crops grown under various rotations of pasture ley. W56H, 66M29, 67N4, 67BA6, 68E5, 68SG5, 69GE20
Frost Injury To Cereals In W.A, M W. Perry, A. G. P. Brown
Frost Injury To Cereals In W.A, M W. Perry, A. G. P. Brown
Journal of the Department of Agriculture, Western Australia, Series 4
Late spring frosts commonly reduce yields and affect the quality of grain in wheat crops, especially in the southern, eastern and north-eastern districts. The damage is usually localised on individual farms, but is sometimes widespread.
Barley, and oats to a lesser extent, are also affected. Average losses of wheat in Western Australia have been estimated at 3 to 5 per cent, per year, or about 2 million bushels on current production figures.
Metric Conversion For Agriculture, Department Of Agriculture, Western Australia
Metric Conversion For Agriculture, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Farmers are already becoming involved with metric units and by 1974 conversion of the farming industry will be well advanced. Wool sales converted to metric measurements in August, 1971, and sales by the various grain marketing boards will be largely in metric terms in the 1972 harvest. Weather information to the public has been given in metric terms since September 1.
Agriculture And Pollution In Western Australia. Part 1. Background, C V. Malcolm
Agriculture And Pollution In Western Australia. Part 1. Background, C V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
For centuries there has been awareness of pollution but it has received dramatic publicity in recent years.
In Western Australia, provisions for its control are written into the Health Act and many other Acts besides the Environmental Protection Act of 1971.
A number of factors have acted worldwide and locally to increase awareness and concern about pollution, and to justify careful examination of the problems it causes.
Agriculture And Pollution In Western Australia. Part 2. Pollution Problems In W.A, C V. Malcolm
Agriculture And Pollution In Western Australia. Part 2. Pollution Problems In W.A, C V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
In Part I pollution was defined as a reduction in the usefulness of a resource and its significance in relation to resource fragility was discussed. Pollution problems in Western Australia are here considered in broad geographical regions with further subdivision into pollution types.
Kojonup Maintenance Phosphorus And Sulphur Trial 68br7ex, J W. Bowden, B. Scurr
Kojonup Maintenance Phosphorus And Sulphur Trial 68br7ex, J W. Bowden, B. Scurr
Experimental Summaries - Plant Research
68BR7 Maintenance superphosphate and sulphur trial To determine the level of superphosphate to maintain near maximum plant and animal production with and without additional elemental sulphur. Experimental: There are 41 plots with 29 treatments. 12 treatments have 2 replications. Site: Very old land, whitegum and sheoak vegetation with greybrown sandy loam and some quartz grit. History: Superphosphate - 1/2bag for 40 years - 3,600 lbs (1633 kg). 600 lb (272 kg) in the last 4 years to 1967.
Summary Of Trial Results 1972 (February 1973), N. R. Mckeown
Summary Of Trial Results 1972 (February 1973), N. R. Mckeown
Experimental Summaries - Plant Research
1.0.0. Trials in Progress During 1972 observations were made on 16 small plot legume species trials and 11 grazing trials. In 1973 the small plot trials will be reduced to 10. This report summarizes the results from the grazing trials under the following headings:- 2.0.0. Seasonal conditions 3.0.0. Grazing experiments 3.1.0. 68MO23 - Legume grazing management trial, West Moora 3.2.0. 71LG17 - Comparison of production from Cyprus Medic and volunteer pasture 3.3.0. Comparison of production from tornafield medic,serradella and subterranean clover 3.3.1. 70ME2 - Walgoolan 3.3.2. 71WH13 - Wongan Hills 3.3.3. 69MO17 - Watheroo 3.3.4. 69LG24 - Lake Grace 3.4.0. …
1972 - Part 3 - Lupin Cultivar Comparison, G H. Walton
1972 - Part 3 - Lupin Cultivar Comparison, G H. Walton
Experimental Summaries - Plant Research
The 1972 experimental results provide a good comparison between Unicrop and Uniharvest lupin under low rainfall conditions. While most trial results have to be examined in the knowledge of low rainfall confounded with high weed competition, some useful and practical conclusions can be drawn. Trials - 72MO10, 72MT33, 72GE11, 72GE12, 72GE13, 72GE14, 72LG7, 72LG10, 72NO9, 72NO10, 72TS10. Other grain legume variety trials which were not harvestable for lupin varieties - 72AL10, 72ES9, 72LG8, 72LG9, 72NA10, 72NA11, 72TS11, 72WH9,
Dust Storms Cause Yield Losses, Department Of Agriculture, Western Australia, C. H. Trotman
Dust Storms Cause Yield Losses, Department Of Agriculture, Western Australia, C. H. Trotman
Journal of the Department of Agriculture, Western Australia, Series 4
Farmers and research workers are well aware that heavy grazing during summer loosens and exposes soil to the action of strong winds and summer thunder storms. They also realise that dust storms mean soil loss from paddocks, but until now there has been little idea of the effect of these storms on crop yields in subsequent seasons.
A Report On The Condition Of The Gascoyne Catchment, D G. Wilcox, E A. Mckinnon
A Report On The Condition Of The Gascoyne Catchment, D G. Wilcox, E A. Mckinnon
Resource management technical reports
Severe flooding in Carnarvon followed heavy rains on the Gascoyne Catchment in February 1961. The flooding and erosion were extensive enough to suggest that run-off from the catchment was excessive. Lightfoot (1961)* reported that excess run-off was due to degradation of the catchment area. This report will describe the catchment area in terms of the degradation of its rangeland and its susceptibility to erosion.
Plant Cover For Bare And Salt Affected Land, Department Of Agriculture, Western Australia
Plant Cover For Bare And Salt Affected Land, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
The contributions made by this State to land reclamation were recognised at an international level last year.
Mr. C. V. Malcolm, a research officer with the Soils Division, presented a paper entitled "Establishing Shrubs in Saline Environments" at a symposium on Useful Wildland Shrubs, Their Biology and Utilisation, at Utah State University, Logan, Utah.
The conclusion to Mr. Malcolm's review, set out below, summarises much of what is known about shrub establishment in saline areas.
1971 Field Experimental Results, T. O. Albertsen
1971 Field Experimental Results, T. O. Albertsen
Experimental Summaries - Plant Research
Maintenance P and S for pastures in low rainfall areas
66MO6, 67MO1, 68NO5, 68TS1, 65A1, 65C5, 69WH1,66KA7, 66LG1, 68LG1, 65N5, 67GE2, 67NO5, 66NA3, 66ME3, 66NO9.
Stocking rate and rate of super on Cyprus barrel Medic pasture
66M30.
Continuous cropping with N.P.S.
69NO1, 60NA1, 69ME1,69TS1.
Super rates for wheat
71GE5, 71GE6, 71GE40, 71J22, 71N15
Gypsum rates on rape
71GE31, 71TS24, 71TS25, 71NO22, 71NA22,71NA23, 71KA1, 71KA14, 71BY1, 71BR15, 71AL9.
Rates of phosphorus and sulphur on rape and wheat
71A16
Don't Crop Areas Liable To Waterlogging, Department Of Agriculture, Western Australia
Don't Crop Areas Liable To Waterlogging, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
The increasing areas of crops being sown in high rainfall districts make it likely that many crcp areas include sections liable to severe waterlogging.
This report presents results of a 1970 trial which clearly show that sowing such sections is not economic.
Irrigation In South-Western Australia, K S. Cole
Irrigation In South-Western Australia, K S. Cole
Journal of the Department of Agriculture, Western Australia, Series 4
THE pattern of irrigation in South-Western Australia is constantly changing, At present, the main increase is in the private sector.
In the past century, there has been a see-saw effect from private to Government to private schemes.
Clay Cover For Roaded Catchments, J L. Frith, R. A. Nulsen
Clay Cover For Roaded Catchments, J L. Frith, R. A. Nulsen
Journal of the Department of Agriculture, Western Australia, Series 4
RECENT dry years have stimulated interest in improved catchments for farm dams. Although roaded catchments have been installed on many farm dams in Western Australia, most of them fall short of their potential for increasing run-off.
Assistant Director Retires, Department Of Agriculture, Western Australia
Assistant Director Retires, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Mr. G. H. Burvill (63) retired on September 3 as Assistant Director of Agriculture after 44 years with the Department of Agriculture. He joined the Department as a cadet in 1927.
One of Western Australia's best-known agricultural scientists, Mr. Burvill has had an important influence on many aspects of the State's farming industries over more than 30 years.
He has an unequalled knowledge of the State's soils, climate and agriculture.
Trial Results 1971, M L. Poole
Trial Results 1971, M L. Poole
Experimental Summaries - Plant Research
This report summarizes data for the following trials:
Trial 1. Rape varieties x time of seeding - Mt Barker R.S.
Trial 2. Rape varieties x time of seeding - Gibson
Trial 3. Rape varieties x time of seeding - Badgingarra R.S.
Trial 4. Rape harvesting trial-moisture content - Mt. Barker R.S.
Trial 5. Time of seeding x rates of seeding safflower
Trial 6. Time of seeding x rates of seeding sunflower
Trial 7. Depth control drill trial on rape.
Trial 8. Method of seeding trial on rape.
Trial 9. Sandblast trial - EDRS - Failed.
Trial 10. Rape varieties x …
Growing Plants With Salty Water, C V. Malcolm, S. T. Smith
Growing Plants With Salty Water, C V. Malcolm, S. T. Smith
Journal of the Department of Agriculture, Western Australia, Series 4
LACK of good quality water in many parts of Western Australia often forces people to use salty water for irrigation and gardening.
This article gives some hints on how to reduce salt damage to plants when salty water must be used for irrigation or gardening.
It includes a table of plants which may be irrigated with water of varying degrees of salinity and lists precautions which should be taken for each group.
Simplified Sheep Skin Tanning, Department Of Agriculture, Western Australia
Simplified Sheep Skin Tanning, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
Most people would agree that a white sheepskin rug adds a touch of luxury to any home.
The following method will produce dressed, woolly sheep skins with chemicals and equipment available to any householder.
Grain Sorghum In The Ord Valley : Three Crops A Year?, P J. May
Grain Sorghum In The Ord Valley : Three Crops A Year?, P J. May
Journal of the Department of Agriculture, Western Australia, Series 4
High temperatures and ample irrigation water allow grain sorghum to be grown throughout the year on the Ord River Irrigation Area, and observations in 1969-70 indicated that it may be possible in this area to produce three crops in one year from one planting, by ratoon cropping.
This article describes the technique and discusses its possibilities on the Ord.
The sorghum midge, one of the worst pests of sorghum, could well make ratoon cropping impossible, but the midge has not yet been seen in this area.
Range Evaluation Using Aerial Photography, D G. Wilcox
Range Evaluation Using Aerial Photography, D G. Wilcox
Journal of the Department of Agriculture, Western Australia, Series 4
The Department of Agriculture, in association with the University of Western Australia, recently undertook a study of the application of aerial photography to range condition monitoring in three rangeland types in the mulga zone of Western Australia.
The project was financed by the Rural Credits Development Fund and the C.S.l.R.O. Rangelands Research Unit.
This article deals in a general way with the possible use of aerial photography in rangeland administration.
Sprinkler Irrigation In Windy Conditions, K S. Cole, G. C. Brown
Sprinkler Irrigation In Windy Conditions, K S. Cole, G. C. Brown
Journal of the Department of Agriculture, Western Australia, Series 4
THOSE summer winds—be they cooling afternoon breezes or scorching easterlies—are no help to the irrigationist.
Where sprinklers are used wind can result in uneven irrigation, reduced yields and spoilt produce.
Low Cost Filter For Trickle Irrigation, C R. Coffman, G. L. Godley
Low Cost Filter For Trickle Irrigation, C R. Coffman, G. L. Godley
Journal of the Department of Agriculture, Western Australia, Series 4
CLEAR water is essential for a successful trickle irrigation scheme. Most water sources are not sufficiently clean and some form of filtration is necessary.
Farm Dams In High Rainfall Areas, G C. Brown
Farm Dams In High Rainfall Areas, G C. Brown
Journal of the Department of Agriculture, Western Australia, Series 4
WATER storage is essential on most south-west farms to ensure adequate irrigation supplies in the dry summers. Government irrigation water supply schemes are limited and most farmers must supply their own water storage.
Testing Grain Crops, H M. Fisher
Testing Grain Crops, H M. Fisher
Journal of the Department of Agriculture, Western Australia, Series 4
TODAY'S competitive markets for crop products stress the need for greater awareness of buyers' requirements and more detailed knowledge about our ability to supply them.
Crop varieties and their performance in different environments are important aspects of production potential.
Irrigating With Underground Water, T C. Calder
Irrigating With Underground Water, T C. Calder
Journal of the Department of Agriculture, Western Australia, Series 4
MANY farmers in South-West areas are looking to irrigation to increase and diversify farm production, particularly on the sandy coastal plain where irrigation in summer is essential for vegetable, fruit and fodder production.
New Varieties Could Extend The Peach Canning Season, S R J Newton
New Varieties Could Extend The Peach Canning Season, S R J Newton
Journal of the Department of Agriculture, Western Australia, Series 4
THE peach canning industry in Western Australia at present has only a limited period of operation, coinciding with the harvest time of the major variety, Golden Queen.
New canning peach varieties tested at Stoneville Research Station could be used to extend the harvest period of canning peaches beyond that of the present standard variety, Golden Queen.
This would have obvious advantages for growers and a canning industry.
The South African variety Keimoes was the most promising canning peach tested. Tests on other varieties are continuing.
Control Of Water Resources In W.A, T C. Calder
Control Of Water Resources In W.A, T C. Calder
Journal of the Department of Agriculture, Western Australia, Series 4
Use of underground and surface water is controlled so that the supplies are available to the general benefit of all domestic, industrial and agricultural users in a particular area.
Water is a valuable resource and its contamination and wastage must be avoided. This article outlines the provisions of the Rights in Water Act which is designed to protect water supplies from undue exploitation, contamination and wastage.
Maintenance P And S For Pastures In The Low Rainfall Areas., Tony Albertsen
Maintenance P And S For Pastures In The Low Rainfall Areas., Tony Albertsen
Experimental Summaries - Plant Research
Maintenance P and S for pastures in the low rainfall area. To determine the best rates of Gypsum and a Phosphate Fertiliser required to maintain optimum pasture growth on old land. Stocking rate and rate of super on Cyprus Barrel Medic Pasture 66M30. To determine if topdressing annual medic pasture on heavy wheatbelt land increases carrying capacity or animal production per head. Also to determine the relationship between super rate and animal production. Continuous Cropping with N.P.S. To determine the number of continuous cropping on different soil types using N.P. and S fertilisers. 69NO1 T. HENDERSON· QUELAGETTING 1970, ·1971 MEAN …