Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 30 of 123

Full-Text Articles in Physical Sciences and Mathematics

Phytophthora Diseases Of Cutflower Crops, Department Of Agriculture And Food, Western Australia Jan 2006

Phytophthora Diseases Of Cutflower Crops, Department Of Agriculture And Food, Western Australia

Bulletins 4000 -

Phytophthora root rot is the most common soil borne disease causing plant death in native cut flower production. It is also a pathogen of exotic cutflower crops such as rose, lily, carnation, proteas and gerbera. The fungus, Phytophthora cinnamomi, the cause of jarrah dieback is the pathogen that first comes to mind when Phytophthora is mentioned. This has one of the widest host ranges of all Phytophthora species, particularly amongst native Australia species. P.nicotianae also has a wide host range, infecting a wide range of exotic, as well as Australian native flower crops. There are also a number of ...


Weed Plan For Western Australia, State Weed Plan Steering Group, Department Of Agriculture And Food, Western Australia Oct 2001

Weed Plan For Western Australia, State Weed Plan Steering Group, Department Of Agriculture And Food, Western Australia

Bulletins 4000 -

One of the most significant environmental challenges facing Western Australia is the minimisation of the impact of weeds. In the relatively short history of this State since European settlement, some 1155 exotic plant species have established as weeds in our diverse and generally fragile ecosystems. While development for agriculture, mining, transport and housing must by its nature result in some change to the State’s flora, the introduction of weedy plant species has caused serious impacts which cause great concern.

Weeds now pose a serious threat to many of the State’s ecosystems, and impose high annual costs on agricultural ...


Pea And Faba Bean Symbiosis With Rhizobium., J. Evans, C. Wallace, N. Dobrowolski Jan 1990

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.


Leaf Diseases Of Wheat, R. Loughman, Geoff Thomas, J. A. Bathgate, W. R. Smith Jan 1990

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 ...


Virus Diseases In Lupins., R. Jones, Simon Mckirdy, A. R. Baker, J. Stevenson Jan 1990

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 ...


Rhizoctonia Bare Patch Of Cereals And Lupins. Sterile Red Fungus (Srf) And Control Of Take-All Disease In Wheat., G. C. Macnish Jan 1990

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 patch and ...


Pleiochaeta Diseases Of Lupins, Mark Sweetingham Jan 1990

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,


Management Of Lupin Root Rots In The Northern Agricultural Region., W. Macleod Jan 1990

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 sowing ...


Soil-Plant-Sheep Organochlorine Pesticide Research, Tony Albertsen Jan 1989

Soil-Plant-Sheep Organochlorine Pesticide Research, Tony Albertsen

Experimental Summaries - Plant Research

1. Soil O/C decay (5812)

Locations: Brookhampton, Carbunup, Dardanup, Denmark, Donnybrook, Goodwood, Jindong, Kirrup, Manjimup, Pemberton, Redmond.

To determine the rate of decay of soil Dieldrin.

2. Soil profile distribution of O/Cs (5812) (88AL21/1)

To determine the distribution of O/cs at 1 cm intervals down the soil profile.

3. Soil decontamination of O/Cs (5812)

To assess practical and economic techniques for decontaminating soil Dieldrin residues.

4. The accumulation and rundown of Dieldrin in wethers. (5841)

To determine the relationship between the levels of Dieldrin contamination in soil, pasture, sheep body and wool fat.

5. Surface ...


Medic Variety Evaluation., C. K. Revell Jan 1989

Medic Variety Evaluation., C. K. Revell

Experimental Summaries - Plant Research

Trial 89M57

Medic variety evaluation - rows.
Merredin Research Station (Paddock T5)

Trial 89ME71

Selection of early maturing M. murex.
Nokaning.

Trial 88ME86

Evaluation of Santiago in low rainfall areas.
Mukinbudin.

Trial 87M73

Medic variety evaluation - large plots.
Merredin Research Station.

Trial 86M65

M. polymorpha variety evaluation - large plots.
Merredin Research Station.

Trial 88ME84

Evaluation of burr medics on Morrel soils.
Nokaning.

Trial 88SC30

Selection of early maturing M. murex.
Merredin.


Rotational Experiments., C. K. Revell Jan 1989

Rotational Experiments., C. K. Revell

Experimental Summaries - Plant Research

Trial 82M47

a. Subterranean clover.

Subterranean clover rotation trial
Merredin Research Station.

Trial 88ME83

b. Santiago burr medic

Rotational systems for burr medic
Merredin.

Trial 89N29

Rotational systems for burr medic.
Newdegate Research Station.


Surface Drainage Trial., Tony Albertsen Jan 1988

Surface Drainage Trial., Tony Albertsen

Experimental Summaries - Plant Research

Trial 86V1

Location: Vasse Research Station

Laser levelling demonstration areas at Vasse Research Station have improved surface drainage and reduced waterlogging, flooding and salt accumulation. Reseeding these laser treated areas has resulted in greater pasture productivity and stock carrying capacity. The overall cost of this exercise has to be met by increased animal productivity.


Ryegrass Species Evaluation., L. Cransberg Jan 1988

Ryegrass Species Evaluation., L. Cransberg

Experimental Summaries - Plant Research

Trial 88AL31

Location: Takalarup

To identify productive grass species for the short, medium and long term in southern high rainfall environment.


Long Season Serradella Evaluation., L. Cransberg Jan 1988

Long Season Serradella Evaluation., L. Cransberg

Experimental Summaries - Plant Research

Trial 88AL32

Location: Walpole

To select productive and persistent serradella lines for the deep acidic sands in the very high rainfall zone on the south coast.


Soil-Plant Organochlorine Pesticide Research., Tony Albertsen Jan 1988

Soil-Plant Organochlorine Pesticide Research., Tony Albertsen

Experimental Summaries - Plant Research

88MA42, 88BU18, 88BU21, 88BU22, 88BY16, 88AL20, 88AL21, 88AL22, 88BY9, 88 BY1, 88BY11, 88BY12, 88BY13, 88BY14, 88BY15, 88BU19, 88BU20, 88MA43, 88MA44, 88MA45, 88MA46, 86V1, 86V2, 84V2.

Locations: Albany, Bunbury, Busselton and Manjimup.

In 1988 a research programme was initiated to help define the relationship between soil and plant contamination. Two main experiments were established 1) Pasture contamination in annual and perennial grazed swards. 2) Plant species contamination in a wider range of pasture and crops.


Effect Of Deep Ripping And Aphid Infestation On Pasture Production., Bradley Nutt, M. K. Laslett Jan 1988

Effect Of Deep Ripping And Aphid Infestation On Pasture Production., Bradley Nutt, M. K. Laslett

Experimental Summaries - Plant Research

Trial 88EC18

Location: East Chapman Research Station.

Half the trial site was cultivated to 30cm at the break of the season and the whole site was normally cultivated. Weeds were then sprayed with Roundup at 1 1/ha prior to seeding with an eight run cone seeder. The plots were kept weed free during the year by hand weeding. The root distribution was calculated from soil cores taken in 20 cm increments on 20 August. Aphid cortrol consisted of spraying every two weeks with Pirimor at 140 g/ha between July and October. Lorsban at 150 ml/ha was used ...


Pasture Cultivar Comparison - Large Plots., Bradley Nutt, M. K. Laslett Jan 1988

Pasture Cultivar Comparison - Large Plots., Bradley Nutt, M. K. Laslett

Experimental Summaries - Plant Research

Trial 88TS63

Location: Perenjori

To evaluate the effect of various legume pasture cultivars on pasture and crop production.


Annual Medic Evaluation On Eradu Sandplain Soil - Plots, Bradley Nutt, M. K. Laslett Jan 1988

Annual Medic Evaluation On Eradu Sandplain Soil - Plots, Bradley Nutt, M. K. Laslett

Experimental Summaries - Plant Research

Trial 88EC17

Location: East Chapman Research Station.

The plots were hand sown at 2 g/m2 of inoculated and lime pelleted seed. The medics were inoculated with WSM540 which may have been ineffective on some of the M. littoralis and M. tornata varieties. The time taken to form ripe pods was monitored to gain some extra measure of maturity besides flowering time for comparing wide ranges of species. The ripening time involved was very similar over all the varieties, averaging out to 44 days after the flower opens. What appears to be a more important factor when considering maturity is ...


Annual Medic Evaluation On Eradu Sandplain Soil - 3 M Rows., Bradley Nutt, M. K. Laslett Jan 1988

Annual Medic Evaluation On Eradu Sandplain Soil - 3 M Rows., Bradley Nutt, M. K. Laslett

Experimental Summaries - Plant Research

Trial 88EC16

Location: East Chapman Research Station

Inoculated and lime pelleted seed was hand sown into 3m rows at 0.25 g/m. All the medics were inoculated with WSM 540 which may have been less effective with some of the M. littoralis and M. tornata varieties. The 1988 season was very good in terms of frequency and amount of rainfall which is reflected in the high seed yields compared to 1987.


Dryland Pasture Legume Programme, C. K. Revell, G. Croker, J. Simmons, L. Heinrich Jan 1988

Dryland Pasture Legume Programme, C. K. Revell, G. Croker, J. Simmons, L. Heinrich

Experimental Summaries - Plant Research

1. Medic variety evaluation

a. Row Evaluation - 88ME122 - Merredin.
This method of assessment was used to test a range of new medic material originating from the South Australian Department of Agriculture.

b. Evaluation of burr medics on Morrel soils. - 88ME84 - Nokaning.

c. Evaluation of burr medics on Whitegum soils. 88ME85 - North Kellerberrin.

d. Evaluation of Santiago in low rainfall areas - 88ME86 - Mukinbudin.

e. Selection of early maturing M. murex. 88SC30 - Merredin.

f. Medic species evaluation - large plots. 88NO88 - Tammin.

g. Medic species evaluation - large plots. 85M43 - Merredin Research Station.

h. Medic species defoliation trial - 84LG34 - North East Pingrup.

i. Medic ...


Serradella Establishment On Light Textured Soil., Bradley Nutt, M. K. Laslett Jan 1988

Serradella Establishment On Light Textured Soil., Bradley Nutt, M. K. Laslett

Experimental Summaries - Plant Research

Trial 87GE81

Location: East Chapman Research Station.

Evaluate early maturing serradella lines on deep sands.


Pasture Cultivar Comparison On Red Loam Soil - Large Plots., Bradley Nutt, M. K. Laslett Jan 1988

Pasture Cultivar Comparison On Red Loam Soil - Large Plots., Bradley Nutt, M. K. Laslett

Experimental Summaries - Plant Research

Trial 88GE34

Locations : North Mullewa Research Station and Morawa Agricultural School.

Evaluation of pasture cultivars in large plots.


National Subterranean Clover Improvement Programme, P. Nichols Jan 1988

National Subterranean Clover Improvement Programme, P. Nichols

Experimental Summaries - Plant Research

Trial 88PE27 - University Field Station, Shenton Park
Trial 88WH43 - Wongan Hills Research Station.

The project 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 ...


Murex Medic Trials And Redlegged Earthmite Impacts, D. Gillespie Jan 1988

Murex Medic Trials And Redlegged Earthmite Impacts, D. Gillespie

Experimental Summaries - Plant Research

1. Selection and development of early maturing varieties of murex medic.

Small plot trials were established at six medium and low rainfall sites in autumn 1988. All were hand sown 2Mx3Mplots sown at 50 kg/ha except for the Merredin site which was drill sown at 10 kg/ha.

Locations: Badgebup, Gabalong, Kellerberrin, Merredin, North Quairading, Pingrup.

2. Mid season murex medic evaluation.

Locations: Avondale, Cranbrook, Darkan and New Norcia

This programme aims to identify superior varieties to Zodiac which was released in 1988.

3. Management of murex medic.

Locations: Arthur River

After three years of drought the large grazing ...


Lupin Seeding Rates, Pea Seeding Rates, And Weed Control., K. French, A. Little Jan 1987

Lupin Seeding Rates, Pea Seeding Rates, And Weed Control., K. French, A. Little

Experimental Summaries - Plant Research

Lupin seeding rates, 87ME70. Lupin seeding rates on deep soils, 87ME71. Lupin seeding rates on shallow duplex or gravel soils, 87N27. Lupin seeding rates on deep soils, 87N28, 87A27. Lupin seeding rates on shallow duplex or gravel soils, 87KA54, 87TS32, 87NA88, 87M066, Lupin seeding rates on heavy soil, 87A26, 87TS33. Lupin seeding rate by seed size, 87ME92. Pea seeding rates, 87ME72, 87KA56. Broadleaf weed control in field peas, 87LG41. Grass control in peas, 87LG53


Disease And Insect Resistance; Murex Medic Evaluation; Legume Species Phasic Development, D J. Gillespie Jan 1987

Disease And Insect Resistance; Murex Medic Evaluation; Legume Species Phasic Development, D J. Gillespie

Experimental Summaries - Plant Research

A summary of the performance of the control varieties (four replications) is shown in Table 3. A summary of the root rot ratings for some varieties showing a range of root rot susceptibility to all four pathogens is given in Table 4. Plant weights were recorded for all varieties tested against the three pathogens in the Western Australian experiments. Results for 12 of the 60 varieties are shown in Table 5. Murex medic evaluation. 86MT56 (Mount Barker), Gravelly loam pH 5.2 (water). 86NA46 (Darken) Loamy sand pH 5.4 86M037 (Regans Ford) Fine red sand pH 5.8 All ...


Radish Control In Lupins - Brodal., D J. Gilbey Jan 1987

Radish Control In Lupins - Brodal., D J. Gilbey

Experimental Summaries - Plant Research

To study the effect of Brodal on lupins and radish.
87GE84, 87TS35, 87MO52, 87NO91, 86MO33.


Barley Grass X Nitrogen Interaction., G. S. Gill, R. L. Thomas Jan 1987

Barley Grass X Nitrogen Interaction., G. S. Gill, R. L. Thomas

Experimental Summaries - Plant Research

Barley grass x nitrogen interaction.
87WH12, 87N4.

Barley grass control in wheat.
87N3, 87A3.

Competition between wheat and mixtures of barley grass and doublegees.
87A5.


Wild Oat Control With Hoegrass With And Without Oil, R. Madin, J. Buckley Jan 1987

Wild Oat Control With Hoegrass With And Without Oil, R. Madin, J. Buckley

Experimental Summaries - Plant Research

Trial 87NO08
All treatments except Combine + Oil yielded significantly better than the control. Control of wild oats with Grasp was superior to many other treatments and this was reflected in the yield.

Trial 87N009
All treatments yielded significantly better than the control however there was no difference between herbicides, rates of use or additives. The exception being 0.75 L Hoegrass +WA which yielded significantly less than Grasp + oil.


Isoproturon Evaluation - Timing Of Application On Efficacy And Crop Damage., R. Madin, J. Buckley Jan 1987

Isoproturon Evaluation - Timing Of Application On Efficacy And Crop Damage., R. Madin, J. Buckley

Experimental Summaries - Plant Research

The trial was effectively a tolerance trial. Best overall weed control was achieved with Glean and the higher rates of Isoproturon which in turn gave best control as a pre-plant, incorporated treatment.
87A23, 87WH54