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Articles 871 - 900 of 1674
Full-Text Articles in Earth Sciences
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.
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 …
Looking At Lupins - Lupin Management In The South Eastern Wheatbelt, W. L. Smart, M. M. Ralph, J. M. Liddle, R.. D. Ramm, C. J. Robinson, E. W. Armstrong
Looking At Lupins - Lupin Management In The South Eastern Wheatbelt, W. L. Smart, M. M. Ralph, J. M. Liddle, R.. D. Ramm, C. J. Robinson, E. W. Armstrong
Grain and other field crops research reports
In the past couple of years research into lupins has increased substantially particularly in the fields of weed control, seeding rates, and control of diseases such as brown leaf spot and pleiochaeta root rot. This report is a summary of the lupin trials in the Lake Grace advisory area as well as a guide to better lupin farming.
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.
Preliminary Groundwater And Salinity Investigations In The Eastern Wheatbelt 2. Merredin Catchment, Richard J. George Dr, P W C Frantom
Preliminary Groundwater And Salinity Investigations In The Eastern Wheatbelt 2. Merredin Catchment, Richard J. George Dr, P W C Frantom
Resource management technical reports
Saline groundwater occurs within twelve metres of the surface throughout the valley of the Merredin catchment. Saline groundwater occurs within deep sediments deposited in the valley and deeply-weathered bedrock materials. Rapid groundwater recharge appears to be taking place in sandy-textured soils high in the landscape and directly into the Cainozoic sediments in the valley floor. Water-tables are rising at approximately ten centimetres each year in the upper catchment area.
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.
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.
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.
Salinity In Western Australia : A Situation Statement, V T. Read
Salinity In Western Australia : A Situation Statement, V T. Read
Resource management technical reports
The Select Committee on Salinity was established by the Legislative Council of the Parliament of Western Australia in November 1987 to inquire into and report on salinity in Western Australia giving particular regard to:
• what action has, or is being taken, to assess the magnitude of the problem;
• what form of action can, or should, be taken to control salinity;
• what legislative of administrative acts or incentives to the private sector are necessary or desirable to assist further in controlling or eradicating salinity.
Members appointed to the Select Committee were the Honourable David Wordsworth (Chairman), the Honourable …
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.
The Use Of Permeability, Conductivity, Conductance And Resistance In The Description Of Water Movement In Soils And Plants, H Borg
Resource management technical reports
Permeability, conductivity, conductance and resistance are important parameters in the description of water movement in soils and plants. These terms are related, but not synonymous. Permeability is only a function of the flow pathgeometry of the medium, while conductivity also depends on the fluid involved. Conductance, in addition, takes the size of the medium into account. Resistance is simply the inverse ofconductance. By applying the definition of resistance, it isshown that Darcy's law and Ohm's law are equivalent. Conductance and resistance relate volume flow rate to a potential difference, but to relate volume flux (volume flowrate per unit area) to …
Water Erosion In The Geraldton Area During June-July 1986, K J. Bligh
Water Erosion In The Geraldton Area During June-July 1986, K J. Bligh
Resource management technical reports
No abstract provided.
A Review Of Machinery For Cropping With Reduced Water Erosion, K J. Bligh
A Review Of Machinery For Cropping With Reduced Water Erosion, K J. Bligh
Resource management technical reports
No abstract provided.
An Assessment Of Land Capability For Residential Land Uses : Babbage Island, Carnarvon, Western Australia, M R. Wells, Veronica P M Oma
An Assessment Of Land Capability For Residential Land Uses : Babbage Island, Carnarvon, Western Australia, M R. Wells, Veronica P M Oma
Resource management technical reports
No abstract provided.
Preliminary Groundwater And Salinity Investigations In The Eastern Wheatbelt. 3. Welbungin And Beacon River Catchments, Richard J. George Dr, P W C Frantom
Preliminary Groundwater And Salinity Investigations In The Eastern Wheatbelt. 3. Welbungin And Beacon River Catchments, Richard J. George Dr, P W C Frantom
Resource management technical reports
Water-tables show no obvious signs of a nett annual rise in the bores monitored in the valley floor, lower slope areas over the three year period. Groundwaters are extremely saline, the sedimentary and saprolite aquifers permeable (hydraulic conductivity range 0.1-2.0 m/day) (0.0001). Future management systems should seek to decrease recharge by changing rotations and farm practises while increasing discharge by using trees, pumps and halophytes. Options are available for drainage.
Drains : A Method Of Financially Assessing Drains Used To Mitigate Waterlogging In South-Western Australia, John S. Salerian, D J. Mcfarlane
Drains : A Method Of Financially Assessing Drains Used To Mitigate Waterlogging In South-Western Australia, John S. Salerian, D J. Mcfarlane
Resource management technical reports
Seepage interceptor drains are often effective in mitigating waterlogging in duplex (sand over clay) soils on hill slopes in the sout-west. Spoon and W drains are sometimes effective in removing excess surface waters form clay flats.
This report outlines a method to determine the long-term (1 to 20 years) cost-effectiveness of installing drains to mitigate waterlogging for each individual situation.
The Soils Of Falls Farm Catchment Cuballing Western Australia R.A. Sudmeyer., Robert Anthony Sudmeyer
The Soils Of Falls Farm Catchment Cuballing Western Australia R.A. Sudmeyer., Robert Anthony Sudmeyer
Resource management technical reports
No abstract provided.
The Soils Of South Carrabin Research Station -Light Land Annex, Henry Smolinski, G G. Scholz
The Soils Of South Carrabin Research Station -Light Land Annex, Henry Smolinski, G G. Scholz
Resource management technical reports
No abstract provided.
Control Of Peas And Lupins In Wheat, J. R. Peirce, B. J. Rayner
Control Of Peas And Lupins In Wheat, J. R. Peirce, B. J. Rayner
Experimental Summaries - Plant Research
Trial 87A29
Lupins were easier to kill than peas.
Glean applied pre-sowing gave very poor control of both peas and lupins.
The treatment using higher rates of 2,4-D amine in diuron mix also caused lower yields.
The Tordon 242 treatment appeared to cause some yield depression.
Disease And Insect Resistance; Murex Medic Evaluation; Legume Species Phasic Development, D J. Gillespie
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 sites were established …
Effect Of Different Chemical Treatments On Capeweed Control And Crop Yield., J. R. Peirce, B. J. Rayner
Effect Of Different Chemical Treatments On Capeweed Control And Crop Yield., J. R. Peirce, B. J. Rayner
Experimental Summaries - Plant Research
Trial 87WH60
Control of capweed was obtained using post-emergence in-crop herbicides. Good control was on most of the treatments applied before seeding.
Most products showed good ryegrass control are not usually effective, assume some other factor operating. Treatment usually associated with good ryegrass control have higher ryegrass densities than the treatments using herbicides with only broadleaved variety.
Although large reductions in density of silvergrass were obtained none was significantly better than the unsprayed. Some treatments particularly those favouring grass dominance allowed silvergrass density to build up.
Bromegrass appears to be very sensitive to competition from capeweed. Where there was high …
The Ecology Of Skeleton Weed In Western Australia. Survival And Reproduction Of Wild Radish Populations, F. D. Panetta
The Ecology Of Skeleton Weed In Western Australia. Survival And Reproduction Of Wild Radish Populations, F. D. Panetta
Experimental Summaries - Plant Research
1.1 Skeleton weed demographic studies (84BA17)
To determine potential growth rates of skeleton weed populations on contrasting soil types.
2.1 Wild radish demography in lupin crops (87GE86) - the results are missing in the report please see in supplementary content
Control Of Peas And Lupins In Oats, J. R. Peirce, B. J. Rayner
Control Of Peas And Lupins In Oats, J. R. Peirce, B. J. Rayner
Experimental Summaries - Plant Research
Trial 87A30
All lupin treatments satisfactory.
Treaments 4, 8 and 9, ie Dicamba 500 ml and both treatments with diuron + 2,4-D amine would not control peas sufficiently to prevent rejection of line of oats. Peas are more difficult to control.
Saffrom Thistle, Seed Set Control, J. R. Peirce, B. J. Rayner
Saffrom Thistle, Seed Set Control, J. R. Peirce, B. J. Rayner
Experimental Summaries - Plant Research
Trial 87ME119 - Saffron thistle, seed set control.
Trial 87TS38 - Saffron thistle control (seed set)
Trial 87JE42 - Seed set control in Saffron thistle.
All treatments had some measure of reducing seed production. Best control was obtained by applying chemicals just at or prior to flowering.
Control Of Wild Statice (Limonium Sinuatum) In Pasture., B. Kimber, R. Ramm
Control Of Wild Statice (Limonium Sinuatum) In Pasture., B. Kimber, R. Ramm
Experimental Summaries - Plant Research
Trial 87LG64
Wild Statice is a prolific seeder. Glean + diuron treatments, which were not included in trial gave good control, as did the farmer's treatment using Tribunil followed by heavy grazing. Later applications may be more effective because they may prevent seed formation for that year and also prevent the plant from recovering from spraying, as apparently with the early spraying.
Most chemical treatments would cause damage to broadleaved pasture.
Topsoil Displacement Methods For Crop Establishment. (Wheat And Barley), J. H. Moore, G. R. Dean
Topsoil Displacement Methods For Crop Establishment. (Wheat And Barley), J. H. Moore, G. R. Dean
Experimental Summaries - Plant Research
Trial No. 87AL28.
1. To create a reduced disease situation around the crop seed by placing surface soil from the seed row into the inter row zone.
2. to provide a more wettable, less weedy, less acidic environment for cereal seed by placing surface soil from the seed row into the inter row zone.
3. To improve seedling establishment and growth by packing the seeding rows only.
History Effects On Wheat Response., J. H. Moore, G. R. Dean
History Effects On Wheat Response., J. H. Moore, G. R. Dean
Experimental Summaries - Plant Research
Trial 85AL42
To determine the effects of tillage, sowing density, and time of planting of Osprey and Aroona on the pest and disease incidence, early growth and yield.
The Tolerance Of Legumes To Broadleaf Herbicides., P. Stewart, L. Mann
The Tolerance Of Legumes To Broadleaf Herbicides., P. Stewart, L. Mann
Experimental Summaries - Plant Research
Trial 87KA52
The control of broadleaf weeds in leguminous pasture is of major concern because of the ability of these weeds to compete strongly with the leguminous plants. The presence of broadleaf weeds in pasture reduces the pastures nutritional value as well as total nitrogen fixation. There are many herbicides which are available to control broadleaf weeds, but most of these are registered for use in cereals. The amount of tolerance that leguminous pasture plants show to many of these herbicides and herbicide mixes is not known.
The experiments were designed to screen a large number of herbicides for legume …
Phenological And Reproductive Development Of The Four Major Grass Species, P. Stewart, L. Mann
Phenological And Reproductive Development Of The Four Major Grass Species, P. Stewart, L. Mann
Experimental Summaries - Plant Research
Trial 87KA51
The decision of when to spray is one of the major difficulties encountered when spraytopping grassy pasture for seed set control. Previous work has shown the general herbicide application timing window for the major grasses, but within this window, the amount of seed set control achieved can still be poor. Obviously timing within this window needs to be more rigorously defined. The fundamental question we need to answer is; when do the target grasses begin to produce viable seed in relation to their phenological development and in relation to other grass species? If we know this, then herbicide …
Effects Of Residue Levels Of Simazine On Wheat Growth, And Possible Synergism By Glean., Terry Piper, Patrick Pigott
Effects Of Residue Levels Of Simazine On Wheat Growth, And Possible Synergism By Glean., Terry Piper, Patrick Pigott
Experimental Summaries - Plant Research
Trial 87PE36
A previous field test 86N33 had suggested that an apparent simazine residue affect on wheat growth might be exacerbated by Glean. This trial was carried out to further test the herbicide combination.