Physical Sciences and Mathematics Commons^™

Studies On The Effects Of Nutrition And Tillage On Cereal Root Diseases, R F. Brennan

Experimental Summaries - Plant Research

Take-all and manganese / ammonium interaction, 84E1.

Split applications of nitrogen and take-all, 84E2.

Take-all and manganese / ammonium interaction, 84LG2.

Micronutrients (Cu, Zn) and Take-all.

Nitrogen and phosphorus rates and Take-all, 83ES42.

Nitrogen and phosphorus rates and Take-all, 83ES43.

Nitrogen and phosphorus rates and Take-all, 83ES41.

Pasture Manipulation And Root Diseases Of Cereals., W. Macleod

Experimental Summaries - Plant Research

Rotation for wheat comparing pure clover ley with a pasture ley, 79El5. Pasture renovation techniques and crop production in a 1:2 rotation, 81E35. Pasture manipulation - effects on take-all, 85E32. Spraytopping herbicides and take-all, 85MT58. Timing of spraytopping and herbicides, 86MT64, 86E55.

Weed Seed Ecology., A. H. Cheam

Experimental Summaries - Plant Research

Population dynamics of Brome grass in relation to control systems, 86C1. Wild radish control in lupins, 86N085. Preplanting operations to stimulate Doublegee emergence, 85C89. Postplanting operations to stimulate Doublegee emergence, 85C90.

Agricultural Progress On The Ord, D A. Mcghie

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

This is the first of occasional articles describing the experimental and commercial activity on the Ord River Irrigation Area (ORIA) in Western Australia's Kimberley region.

Against a background of extensive recources of land and water, a sometimes cimatic advantage and a complementary disadvantage of a remote location, agriculture on the Ord has swung from various monocultures to a broadly based and diversified production. In 1986, the value of agricultural production on the Ord will approach values equivalent to those of the cotton era for the first time since the demise of that industry 12 years ago.

Root Diseases Of Cereals., G. C. Macnish

Experimental Summaries - Plant Research

Take-all Effects of nitrogen source on take-all 82N34, 77E4. Take-all and rates of PP450 and Bayleton 86MT40. Take-all and control by lupins 86MT6. Take-all and field inoculation rates, 86MT58. Take-all and fumigation, 86MT57. Rhizoctonia root rot Rhizoctonia patch and soil compaction, 86E39. Rhizoctonia patch and short chemical fallow, 86E40. Rhizoctonia root rot and Glean, 86E42. Rhizoctonia strains-and paddock history, 86E31. Rhizoctonia root rot - host effects on strains, 86BA38, 85E28, 86E30.

Shire Of Wanneroo : A Study Of Land Resources And Planning Considerations, Department Of Agriculture, Western Australia, M R. Wells, A J. Clarke

Resource management technical reports

No abstract provided.

Report On Land Degradation Investigations : Kent River Soil Conservation District, Department Of Agriculture, Western Australia, Ron Colman, D J. Miers

Resource management technical reports

No abstract provided.

Jandakot Groundwater Scheme Area : A Study Of Land Resources And Planning Considerations, M R. Wells, N L B Richards, A J. Clarke

Resource management technical reports

No abstract provided.

Serradella Prospects At Esperance, Michael D A Bolland

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

Yellow serradells is a promising introduced annual legume suitable for some of Western Australia's well drained sandy acid soils where other pasture legumes failto persist.

In the Esperance area serradella grows siccessfully on some sandy soils more than 0.5 metres deep. I develops deep roots rapidly - up to three times deeper than subterranean clover - and this is probably the main reason for its persistance.

At present only two late maturing, registered serradella cultivars are available to farmers in southern Australia. This article describes research at Esperance to delect earlier flowering cultivars for persistence in areas with less than …

Communication Networks And The Adoption Of Three Farn Practices, P. W. Fry, F. K. Goss

All other publications

The report commences with a discussion of the diffusion and adoption model, and illustrates some of the research observations and practical outcomes that have emerged in recent years, An overview of social network research is presented as a means of understanding communication exchanges and providing data relevant to the diffusion debate. The communication and adoption studies are then reported in three separate sections in the order they were conducted. (A map of the location of the survey areas is shown in Figure I ) . The objectives, survey method, results and a summary are presented for each study.

A background …

Draining Irrigation Areas, K S. Cole, J P. Middlemas

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

Many irrigation schemes throughout the world have turned into unproductive saline flats and swamps. This dramatic change can occur within a few years of irrigation starting and has been part of irrigation schemes from earliest times up to the present day.

The main cause of this salinisation is normally excess irrigation water use combined with poor drainage. Any form of waterlogging will have an adverse effect on plant growth.

Sub-Surface Drainage Methods For Salinity Control, P R. George

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

Sub-surface drainage can control waterlogging and salinity of arable land by removing excess groundwater.

There are two broad types of sub-surface drainage: interception drainage and relief drainage.

The cost of drainage will depend on the specific design for the site. For relief drains the prime determinate of cost will be the required spacing. In general, clay soils of low permeability or seepage areas will need narrower spacings and will be harder and more expensive to reclaim than sands or areas only needing drainage of local water.

Drainage To Control Waterlogging, D J. Mcfarlane, T R. Negus, J W. Cox

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

Drains can be classified in several ways. Drains on flat land have similar drainage effects on either side of the drain and are called relief drains. Drains on sloping land intercept seepage water moving down hillsides and therefore have most effect on the downslope side. They are called interceptor drains.

Drains can also be classified as being open drains (that is, open at the ground surface) or buried drains (for example, tube drains).

Saltland Drainage : Case Studies, P R. George, R A. Nulsen

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

Over the past five years farmers have become increasingly interested in the use of drainage to overcome saltland problems.

Experimental work by the Department of Agriculture on sub-surface drainage includes tube drainage and drainage by pumping. The Department is also monitoring the performance of open drains installed by farmers. Major sites are at Esperance, Dalwallinu, Namban and Watheroo.

Some of these projects have been reported in an earlier issue of the Journal of Agriculture. In this article P. R. George, Research Officer and R. A. Nulsen, Principal Research Officer with the Salinity and Hydrology Research Branch, discuss recent results from …

Serradella Trial Programme., L. Cransberg

Experimental Summaries - Plant Research

Serradella Line Evaluation - Stage 2 85A155, Serradella Line Evaluation - Stage 3 85A156, Serradella Establishment - Time of Seeding x Seeding Rate 85A157, Serradella Establishment - Pod Undersowing (Variety x Rate) 85A158, Serradella Establishment - Pod Undersowing (Inoculation) 85A159.

Summary Of Rhizobium Experiments., J G. Howieson

Experimental Summaries - Plant Research

The screening of 33 isolates of R. meliloti collected in Sardinia in 1984, and isolated on a low pH medium, 84ME33. Assessment of the possibility of establishing an 'Index of Symbiotic Competence' for species of Medicago, 85M57. Assessment of the effectiveness of several strains of R. meliloti on M.littoralis, and their saprophytic competence in an acid soil, 84ME35. The screening of the pre-1984 collection of R.meliloti held at the W.A. Department of Agriculture for acid tolerance, 84M34. Assessment of the survival of the Serena WSM419 symbiosis on a range of soil types, 84ME32, 84WH24, 84N18. Assessment of the acid tolerance …

Experimental Summaries Various Trials 1985, R Madin, F Schoonens, A Lindsay

Experimental Summaries - Plant Research

85WH55, 85M55. The effect of timing of Roundup and spray.

85NO87, Evaluation of herbicides for control of lupins in cereals.

85NO89, Control of self sown lupins in cereal crops.

85NA59, Grass controI in barley with Isoproturon, Cinch and Metribuzin.

85NO88, Control of wild oats with hoegrass and oil.

85NO86, Tolerance of wheat to hoegrass and oil.

85NO84, Tolerance of lupins to Fusilade plus oil.

85NA63, Ryegrass control in crop with hoegrass plus crop oil.

85A15, Rates of Fusilade for seed set control in grasses.

85A17, Pasture topping herbicides and oils (Silvergrass).

85WH64, Crop oil additives to seed set control herbicides. …

Weed Seed Ecology, A H. Cheam

Experimental Summaries - Plant Research

Emergence of weed seedlings from different soil depths. 82MT49, Mt Barker Research Station. 83MT4, Mt Barker Research Station. 82NR12, Northam Research Station. 83NR2, Northam Research Station. 82C37, Chapman Research Station. 83C3, Chapman Research Station. Longevity of buried weed seeds. 82MT50, Mt Barker Research Station. 83MT5, Mt Barker Research Station. 82NR13, Northam Research Station. 83NR3, Northam Research Station. 82C38, Chapman Research Station. 83C4, Chapman Research Station. Emergence of weed seedlings in relation to soil type and cultivation. 82PE32, South Perth. Emergence and fate of weed seeds in different depths of cultivated and undisturbed compacted soil. 84C49, Chapman Research Station. 84MT62, Mt …

Eradicating Fruit Fly From Carnarvon, Kingsley Thomas Fisher

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

Late last year the Mediteranean fruit fly (Ceratitis capitata Weidemann) was eradicated from Canarvon, Western Australia by using an intergrated programme of sterile insect releases and bait spraying.

The eradication marked the end of a four-year study on the use and effectiveness of the Sterile Insect Technique, a biological control technique which uses an insect pest against itself. such a study can be used as a basis for treating other threatening insect pests, such as the serious cattle pest screw-worm fly, should they be found in Asustralia.

Being a biological control method, the Sterile Insect Technique is an exellent …

Dam Site Selection In The North-Eastern Wheatbelt, J L. Frith

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

Western Australia's wheatbelt farm dams are dug three to eight metres deep and are generally sited in soils which either are inherently impermeable or can be made so during construction.

In the eastern and north-eastern wheatbelt, however, only a small proportion of the soils meets these criteria. Dam site selection in these areas therefore depends on a good knowledge ofwhich soils aresuitable and on our being able to locate them efficiently by using surface indications such as surface soil, natural vegetation or topographic features.

Farm Debt In The Wheatbelt : 1984 Survey Results, R S. Kingwell

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

In recent years many farms in Western Australia's wheat-growing areas have experienced adverse seasons. For example, the 1983-84 season was characterised by a late start, dry spring and wet harvest which resulted in many farms suffering a combination of low yields and the downgrading or dockage of their grain.

Poor seasons and poor profitability prospects for wheat-growing caused some concern about farm indebtedness in these areas.

In late 1983, a Parlimentary select committee was appointed to inquire into rural hardship. The State Minister for Agriculture also announced that the Department of Agriculture would conduct a farm survey to determine the …

Sandplain Hardpan : A Different Dam Construction Material, A F. Mccrea

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

Before 1980, the Department of Agriculture did not believe that suitable farm dam materials could be found in light land soils. However Beacon earthmoving contractor, V> J> Pavlinovich, has demonstrated that where suitable cemented subsoils or 'hardpan' existed, a succcessful dam site could be found.

This material should not be confused with compaction or traffic hardpans ehich are dense layers of soil found near the surface. Traffic hardpans result from compaction of soil materials with the passage of vehicles and farm machinery. Rather, the hardpan referred to here is a natural subsoil layer that has been cemented by silica and …

Drainage Prospects For Saline Wheatbelt Soils, P R. George

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

Sub-surface or groundwater drainage by buried tube drains or open ditches can reclaim saltland in the Western Australian wheatbelt. However, this method is expensive and not all sites can be drained cost-effectively. Each drainage site is unique, so careful investigation of each site is essential before recommendations on drainage method and design can be made.

Hillside Seepages, R A. Nulsen

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

'Hillside seepage' is a local, descriptive term applied to almost any wet patch occurring out of the valley bottom. Depending on their surface appearances, 'hillside seepages' are described as 'springs', 'soaks', 'wet patches', or seeps.

Whatever they are called, seeps can cause problems. The land in the seep is wet, unworkable and non-productive. If the seep is saline and the water flows downhill, further land is lost from production, bared and subject to erosion. Even small seeps, while not affecting much land, break up a paddock and complicate the working pattern for tillage and harvest.

Draining A Saline Seep, W J. Burdass

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

Sub-surface drains have dried out a salty seep on farm land in the Katanning district. Capeweed and clovers are now growing on more than three-quarters of the land that was previously bare or carried only patchy sea barley grass.

The drains are still running water after five years. The salt content of the surface soil has been reduced markedly and the salt content of the effluent water is decreasing.

However, to complete the reclamation, further drains will be necessary. Both existing and any new drains will have to be flushed periodically because blockages of pipes cause problems.

Interceptor Drains And Waterlogging Control, J W. Cox, T R. Negus

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

Department of Agriculture trials of seepage interceptor drains from 1972 to 1983 primarily assessed the effects of such drains on salt encroachment. Although these trials showed that the drains had little influence on salt storage within the topsoil, they did reduce waterlogging downslope.

To investigate this drainage effect further, the Department's Narrogin office surveyed 35 drains on 14 properties in the winter of 1981, followed by detailed crop measurements in December that year. Provided the drains were properly designed, surveyed and constructed, and well maintained, they could be expected to increase crop yields during a waterlogging year by about 1 …

Barley Foliage Diseases, Field Pea Diseases., T. N. Khan, K. Brain, M. Judges, K. J. Young, I. Pritchard, T. Sweeny, J. Hamblyn

Experimental Summaries - Plant Research

85BA22, 85MT31, 85N053, 85BA24, 85MT32, 85MT32, 85N052, 85N053, 85BA21, 85MT30, 85BA21, 85BA22, 85MT31, 85MT43, 85KA59, 85KA60, 85M29, 85MT44, 85E22, 85ES22, 85ES23, 85N051, 85BA25, 85WH27, 85C65, 85C69, 85C66, 85C67, 8SKA48, 8SMT34, 85KA47, 85MT33, 85M26, 85ME26, 85KA49, 85KA51.

A.General Notes and Highlights

BARLEY FOLIAGE DISEASES

B. Scald: Screening fungicides

c. Scald: Fungicidal control in Northam district

D. Scald: Effect of seeding rate

E. Scald & Mildew Effect of fungicides and rates

F. Scald & Mildew Seed borne infection and seed dressing

G. Scald & Mildew Effect of seed dressing and spraying

H. Scald & Mildew Effect of Erex and Baytan

I. Mildew: …

Damage Report Of The West Coastal Wildfire : Nilgen Nature Reserve And Adjacent Military Area, North Lancelin 29th-30th May 1985 And Its Effects On The Western Australian Beekeeping Industry, R C. Burking

Apiculture research reports

No abstract provided.

Assessment Of Waterlogged Sites, D J. Mcfarlane

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

Soil is said to be waterlogged if any part of the plant root zone is saturated with water. In severe cases soil is saturated to the surface and waterlogging is obvious. Waterlogging is distinguished from flooding in which surface runoff brings down water from higher up in a catchment. However, flooding may result in waterlogged sites.

Pasture Species Investigations., D. A. Nicolas

Experimental Summaries - Plant Research

Screening of alternatives to cv. Woogenellup clover. N. Bannister, 81NA37. Byford, 81PE6.

Screening 83MA7, Wilgarup, 83AL49, Hazelvale, 83BU22, Bramley 84V7 - Vasse Research Station.

Screening of early to midseason maturing lines of subterranean clover. 85N056, Beverley, 85M043, W. Calingari.

Screening of early maturing lines of subclover. Tarwonga, 84NA27. Wongan Hills Research Station, 84WH35. Dangin, 85N055. Wongan Hills Research Station, 85WH33.