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Cranola Rapseed Variety Assessment. Cranola Agronomy. Linseed. Tillage., J. D. Warren

Experimental Summaries - Plant Research

Trial 90AB15. 90N68, 90EB39

Canola : assessment of early maturing Stage 2 lines.

Location: Katanning, Newdegate Research Station, East Beverley Annex

Production of Canola in medium rainfall zones offers the opportunity for a rapid expansion of the industry. However presently recommended varieties take too long to mature for the area's shorter growing season. The Stage 2 trials assess Canola lines selected on the basis of earliness from the remnants of Dr Roy's now defunct rapeseed breeding programme as well as selections from Eastern States breeding programmes. The trials arc conducted at three sites to account for environmental effects on cultivar …

Protecting The Remnants, Glenis Ayling

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

Our native flora and fauna do best in their own environment, so one way of protecting them is to conserve and maintain areas of remnant vegetation throughout our farmlands. This is the aim of the Remnant Vegetation Protection Scheme in which the State Government helps private landholders to voluntarily fence off and manage areas of native vegetation on farms.

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 …

Studies On Bean Yellow Mosaic Virus In Pasture Species And Lupins., Simon Mckirdy, R. Jones

Experimental Summaries - Plant Research

Trial 90PE11

Location: South Perth.

A survey was conducted to determine the extent of Bean Yellow Mosaic Virus (BYMV) infection in subterranean clover pastures. The pastures were sampled in October by officers from each of the country districts and from south Perth. 100 samples were collected from each pasture, 1 sample every 5 paces , and sent to south Perth. The ELISA test and the Gibbs and Gower formula were used to determine a percentage BYMV infection for each infected pasture.

Barley yellow dwarf virus in wheat

Location: Badgingarra, Wongan Hills, Goomalling-Dowerin, Northam, Katanning, Jerramungup.

In 1990, very large populations …

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 …

Losses Causes By And Control Of Important Seed-Borne Virus Diseases Affecting Productivity Of Annual Pasture Legumes., R. Wroth

Experimental Summaries - Plant Research

Trial90V1 and 90W1

Assessment of pasture productivity in subterranean clover pastures infected with SCMV.

Location: Woogenellup, Vasse and Wokalup.

These trials measure SCMV disease progress, herbage and seed production losses in Woogenellup pasture swards which are: (i) initially artificially infected by using infected transplants in the first year; and ii) naturally infected via seed transmission of the virus in year two. Trials are grazed by sheep throughout the season, maintaining the pasture height at less than 20 cm.

Trial 90PE5

Assessment of sensitivity/resistance to subterranean clover mottle virus in selected subterranean clover cultivars.

Location: Pemberton

Subterranean clover cultivars, recommended for …

Cucumber Mosaic Virus In Lupins., D. A. Nicholas

Experimental Summaries - Plant Research

Cucumber Mosaic virus in lupins.

A testing service for lupin growers was provided by the Seed Testing Station. The level of CMV in seed was determined in a 1000 seed sample using the ELISA (Enzyme Linked Immunosorbent Assay) technique developed by Dr. R.C. Jones.To speed up processing of samples levels greater than 1.2% were not determined - to do so would have required repeating the test at a different level of grouping. Growers were charged $114 per sample tested. The service was advertised as being available for samples received up until 28 February.

Effect Of Pasture Species On Pasture Production And Following Cereal Yields On Heavy Textured Soils In Low Rainfall Areas. Regeneration Of Pasture Legume Cultivars On Low Rainfall Red Loam Soils., Bradley Nutt

Experimental Summaries - Plant Research

Trial 90GE17

Aphid tolerance evaluation in annual medics

Location: Tenindewa

Maturity and seed yields of annual medic lines with or with out aphid control using Pirmor.

Trial 90GE116

Evaluation of aphid tolerance in annual medics

Location: Tenindewa

Dry matter and seed yield of annual medic lines with and without aphid control using Pirmor.

Trial 90GE34

Effect of pasture species on pasture production and cereal yields on low rainfall red loams.

Location: North Mullewa Research Station, Morawa Agricultural School.

Regeneration of annual pasture cultivars on hardsetting red clay loams at North Mullewa and Morawa in 1989 and 1990.

Trial 88TS63

Effect …

Virus Disease Of Lupins., R. A. Jones

Experimental Summaries - Plant Research

Cucumber mosaic virus.

Effects of different levels of infection in seed sown. - 90BA12, 90WH17

Location: Badgingarra and Wongan Hills.

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%, 1% and 0%. The plots were separated by 30 in wide cereal buffers.

Effect of plant density on BYMV spread into lupins - 90A6 and 90MT13

Location: Avondale and Mt Barker.

Following observations in 1989 (see 1989 experimental summary) on the predominant distribution of BYMV infected plants along the edges of lupin paddocks and into …

Virus Diseases Of Annual Medics., R. A. Jones, D. A. Nicholas, A. R. Baker, Simon Mckirdy, P. W. Skinner, C. Poole

Experimental Summaries - Plant Research

Trial 87A19, 87MT50

Persistence of AMV in annual medic swards.

In 1990, the fourth year of this trial, although the medic plants were numerous the burr medic swards at Avondale grew poorly and weeds were widespread in the plots, especially long storkbill, flatweed and grasses. Poor growth was due to nodulation failure caused by low soil pH (5.3 in water). Hardly any medic plants were left in the Zodiac medic plot at Avondale while a few remained at Mt. Barker.

Location: Avondale and Mt. Barker.

Trial 88A21

Effect of AMV on the productivity of burr medic swards after cropping, regeneration …

Murex Medic Field Evaluation., D. J. Gillespie, D. R. Mcclements, D. S. Francis

Experimental Summaries - Plant Research

Trials: 90GE113, 90MO62, 90WH87, 90ME72, 90NO115, 90A24, 90AB17, 90AL35

Locations: Geraldton, New Norcia, Wongan Hills, Merredin, Southern Brook, Avondale, Katanning, Tenderden.

The selection SEP29.1 was outstanding for both dry matter production and seed yield over a wide range of sites varying in both rainfall and soil type. On the basis of these trials, six lines have been selected for further evaluation in 1991.

They are: SEP29.1 SEP26.2.7 GRC69 GRC87.1 87F01.28 87FB2.36

Trials 90A25 and 90NO116

Redlegged earthmite field experiments.

Very low levels of redlegged earthmite and only minor damage to test varieties was recorded in this trial. Damage ratings were …

National Subterranean Clover Improvement Programme., P. G. H. Nichols

Experimental Summaries - Plant Research

The National Subterranean Clover Improvement Programme (NSCIP) aims to develop, by breeding and selection, better adapted and more productive low—oestrogen cultivars of subterranean clover for a range of environments in southern Australia. The programme is a collaborative one with the University of Western Australia and consists of two phases: (i) early generation selection, which involves selecting varieties satisfying primary selection criteria; and (ii) field evaluation of advanced lines, which is conducted by the Departments of Agriculture in each State and co—ordinated by the Plant Breeder.

The first phase is conducted at the University Field Station (UFS) and is continued until …