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Physical Sciences and Mathematics Commons™
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Articles 1291 - 1320 of 2354
Full-Text Articles in Physical Sciences and Mathematics
Effect Of Deep Ripping And Aphid Infestation On Pasture Production., Bradley Nutt, M. K. Laslett
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 for the last …
Serradella Establishment On Light Textured Soil., Bradley Nutt, M. K. Laslett
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
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.
Ryegrass Species Evaluation., L. Cransberg
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.
Pasture Cultivar Comparison - Large Plots., Bradley Nutt, M. K. Laslett
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.
Long Season Serradella Evaluation., L. Cransberg
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.
Surface Drainage Trial., Tony Albertsen
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.
Going Beyond Single Figure Fertilizer Recommendations, S J. Burgess
Going Beyond Single Figure Fertilizer Recommendations, S J. Burgess
Journal of the Department of Agriculture, Western Australia, Series 4
Single-figure fertilizer recommendations are useful guidelines but they do not tell a farmer anything about the consequences of applying fertilizer at rates other than those recommended.
Climatic Change In Western Australia, M A. Frahmand, R A. Nulsen
Climatic Change In Western Australia, M A. Frahmand, R A. Nulsen
Books & book chapters
The greenhouse effect is now an established scientific fact. Evidence published in the US and Australia in 1987 leaves little room for doubt. Carbon dioxide sent into the air whenever fossil fuels are burnt traps reflected heat from the Earth's surface - just as a greenhouse traps heat on a summer's day.
The uncertainties currently present in any prediction of future regional climate are very large. This paper presents a synopsis of current literature related to the future climate of Western Australia.
Plant Regeneration And The Control Of Dust On The South Common, Carnarvon, I W. Watson
Plant Regeneration And The Control Of Dust On The South Common, Carnarvon, I W. Watson
Journal of the Department of Agriculture, Western Australia, Series 4
No abstract provided.
Experimental Summary 1988., R Loughman, G Thomas, G Cusack, R Hulakjo, R E. Wilson, T N. Khan
Experimental Summary 1988., R Loughman, G Thomas, G Cusack, R Hulakjo, R E. Wilson, T N. Khan
Experimental Summaries - Plant Research
- Disease complexes in wheat field screening trials.
- Glasshouse screening for wheat leaf disease resistance
- Effect of phosphate, stand density and Rovral on Pleiochaeta setosa in lupins.
- Genotype and Rovral for Pleiochaeta setosa in lupins.
- Control of Septoria in early sown wheat.
- Controlling Pyrenophora graminea leaf stripe in barley.
- Effect of environment on leaf stripe in barley
- Unusual seed quality problems.
Dryland Pasture Legume Programme, C. K. Revell, G. Croker, J. Simmons, L. Heinrich
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 …
Production From The Management Of Burr Medic Pastures, C W. Thorn
Production From The Management Of Burr Medic Pastures, C W. Thorn
Journal of the Department of Agriculture, Western Australia, Series 4
No abstract provided.
Tillage Systems And Soil Stability, R J. Jarvis
Tillage Systems And Soil Stability, R J. Jarvis
Journal of the Department of Agriculture, Western Australia, Series 4
No abstract provided.
Summary Of Rhibozium Field Experiments In 1988, J G. Howieson
Summary Of Rhibozium Field Experiments In 1988, J G. Howieson
Experimental Summaries - Plant Research
87M11, 87H12, 88KA77, 88ME97, 88GE32, 88ME98, 88GE33A, 88GE33B, 88KA86, 88ME86.
Title, aim, background, treatments, tables, results, discussion, conclusions.
Lupin Variety Tolerance To Herbicides, D Bowran, R Watson
Lupin Variety Tolerance To Herbicides, D Bowran, R Watson
Experimental Summaries - Plant Research
Trial 88EC31
This site received a basal treatment of 1.5 L of simazine/ha prior to seeding. Due to a heavy stubble load lupin seed was dropped onto the surface and lightly incorporated.
High rates of Simazine were better tolerated by Gungurru 75A/260 and CE2/435. The highest rate of Brodal reduced yields in all varieties except Gungurru.
Trial 88EB27
This site was severely infested with aphids and bean mosaic virus such that the varieties Illyarrie and Danja had up to 60% plant death by anthesis. Other varieties were affected but to a lesser extent.
An Inventory And Condition Survey Of Rangelands In The Ashburton River Catchment, Western Australia, A A. Mitchell, A L. Payne, W F. Holman
An Inventory And Condition Survey Of Rangelands In The Ashburton River Catchment, Western Australia, A A. Mitchell, A L. Payne, W F. Holman
Technical Bulletins
The inventory and condition survey of rangelands in the Ashburton River catchment, undertaken by the Department of Agriculture and Food, Western Australia (DAFWA) between 1976 and 1978, describes and maps the natural resources of the region’s pastoral leasehold land. This survey report provides a baseline record of the existence and condition of the natural area’s resources, to assist with the planning and implementation of land management practices. The report identified and described the condition of soils, landforms, vegetation, habitat, ecosystems, and declared plants and animals. It also assessed the impact of pastoralism and made land management recommendations. The area surveyed …
Selection And Development Of Early Maturing Varieties Of Murex Medic., D. J. Gillespie
Selection And Development Of Early Maturing Varieties Of Murex Medic., D. J. Gillespie
Experimental Summaries - Plant Research
Trial 88A25, 88MO44, 88NA83, 88AL15
Location: Avondale, New Norcia, Darkan, Cranbrook, Arthur River, Kellerberrin North Quairdading, Gabalong, Merredin, Badgebup and Pingrup.
Over 300 recent overseas introductions of murex medic were evaluated in rows at South Perth in 1988. Of these 15 selections were identified with acceptable spinniness that flower in 100 days or less. Four years ago there was only one selection flowering in under 110 days and that was spiny!
These selections will be evaluated in small plot trials in several country sites in 1989.
This programme aims to identify superior varieties to Zodiac which was released in 1988.
Lucerne Herbicides (Tolerance), R Hurst
Lucerne Herbicides (Tolerance), R Hurst
Experimental Summaries - Plant Research
To determine the phytotoxicity of various herbicides on established Lucerne pasture and their efficacy on the various weed species present.
Herbicide Residues, T Piper
Herbicide Residues, T Piper
Experimental Summaries - Plant Research
Trial Nos. 88SG28, 88SG29.
Pea growth following sulphonyl urea herbicide use,
Trial Nos. 88SG30, 88SG31, 88LG68, 88LG69, 88LG70
Medic regeneration following the use of the herbicide Glean.
Trial No. 88PE74
Herbicide resistant weeds, Cranes ryegrass response to Hoegrass.
Trial No. 88MO51
Timing of applications of Sertin to Hoegrass resistant ryegrass Timing of applications of Sertin to Hoegrass resistant ryegrass.
Pasture Cultivar Comparison On Acid Wodjil Soil - Large Plots., Bradley Nutt, M. K. Laslett
Pasture Cultivar Comparison On Acid Wodjil Soil - Large Plots., Bradley Nutt, M. K. Laslett
Experimental Summaries - Plant Research
Trial 88TS64
Location: Latham
To evaluate the effect of various legume pasture cultivars on pasture production on acid wodjil soils.
Murex Medic Trials And Redlegged Earthmite Impacts, D. Gillespie
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 trial at …
Crop Establishment Methods For Lupin Disease Management, M Sweetingham, A Pelham, M Judges
Crop Establishment Methods For Lupin Disease Management, M Sweetingham, A Pelham, M Judges
Experimental Summaries - Plant Research
Pleiochaeta root rot, 88WH33, 88M38, 88WH34, 88M39, 87WH45, 87M52.
Brown spot and Pleiochaeta root rot, 88M40, 88C4, 88ME59, 88NO73, 88ME60, 88SC33.
Rhizoctonia root and hypocotyl rots, 88NO74, 88GE53, 88GE31, 88E38.
Fungicide drench trials, 88NO92.
Tolerance Of New Cereal Varieties To Current Herbicides., D Bowran
Tolerance Of New Cereal Varieties To Current Herbicides., D Bowran
Experimental Summaries - Plant Research
Trial 88EB26
While this site had a low population of weeds no yield increases were apparent. Few variety differeces were apparent at this site, though Hoegrass + Glean reduced yield of Crabook significantly.
Trial 88EC27
Few crop effects were experienced at this site. The major effect was due to variable fertility in replicates 3 and 4 and this resulted in the somewhat uyp and down nature for the Glean, Logran and hoegrass results.
Trial 88SC32
This site had a major problem with soil acidity and only triticale and oats grew satisfactorily. Barley was strongly influenced by the acidity and many …
Tolerance Of Recommended Cereal Varieties Of New Herbcides, David Bowran
Tolerance Of Recommended Cereal Varieties Of New Herbcides, David Bowran
Experimental Summaries - Plant Research
88EC28, 88SC31, 88N73.
Pea Variety Tolerances To Herbicides, David Bowran
Pea Variety Tolerances To Herbicides, David Bowran
Experimental Summaries - Plant Research
88ME118.
This site was variably infested with a population of wild oats and self-sown cereals.
Brome Grass Population Dynamics, A H. Cham
Brome Grass Population Dynamics, A H. Cham
Experimental Summaries - Plant Research
To identify the level of brome grass under various crop rotation systems. To design the best control system. To understand some of the effects of changing rotation systems. 86C1
Soil Factors Affecting Flood Runoff On Agricultural Catchments In Western Australia, D J. Mcfarlane, J R. Davies
Soil Factors Affecting Flood Runoff On Agricultural Catchments In Western Australia, D J. Mcfarlane, J R. Davies
Resource management technical reports
Reviews methods of including soil properties in flood runoff-predicting equations. Concentrates on practical methods that can be routinely used by soil conservation technicians for flood prediction rather than complex research models. A case is made for collecting soil data from the gauged catchments which are relevant to a perceived runoff mechanism and are capable of being routinely applied in simple flood prediction methodologies.
Code Lists For Computerized Soil And Land Resource Data Recording, Peter D. King, M R. Wells
Code Lists For Computerized Soil And Land Resource Data Recording, Peter D. King, M R. Wells
Resource management technical reports
No abstract provided.
A Method Of Assessing Water Erosion Risk In Land Capability Studies : Swan Coastal Plain And Darling Range, M R. Wells
A Method Of Assessing Water Erosion Risk In Land Capability Studies : Swan Coastal Plain And Darling Range, M R. Wells
Resource management technical reports
No abstract provided.