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

Life Sciences Commons™

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

Earth Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 13411 - 13440 of 14817

Full-Text Articles in Life Sciences

Phosphate Nutrition Of Burr Medic And Yellow Serradella., Blakely Paynter Jan 1989

Phosphate Nutrition Of Burr Medic And Yellow Serradella., Blakely Paynter

Experimental Summaries - Plant Research

Trial 89ME50, 89ME51, 89ME53, 88ME55, 89ME56

Location: Mutadgin, Doodlakine, Noongar, Mt Hampton, Nungarin

Compare the response of burr medic to topdressed P with the response of wheat to drilled P.

Trial 89ME52, 89ME54

Location: Noongar, Mt. Hampton.

Compare the response of burr medic to topdressed P with the response of wheat to drilled P.
Measure the response of burr medic pasture to applied potash.

Trial 89ME59

Location: Beacon

Compare the response of yellow serradella to topdressed P with the response of wheat to drilled P.

Trial 89ME60, 89ME61

Location: Muntadgin

Compare the response of yellow serradella to topdressed P with …


The Effect On Farm Profit Of Conserving Stubble To Prevent Wind Erosion, A D. Bathgate Jan 1989

The Effect On Farm Profit Of Conserving Stubble To Prevent Wind Erosion, A D. Bathgate

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

Over-grazing of stubbles is a major cause of winf erosion on WesternAustralian farms. Stubble contributes to the 'roughness' of the paddock; as the roughness is reduced, the risk of winf erosion is increased.

The risk of lupinosis in sheep has previously reduced the likelihood of lupin stubble being over grazed, but the development of Gungurru, a phomopsis-resistent variety of lupin, has increased the potential for over-grazing and hence the probability of wind erosion.

This article describes the economic benefit (or cost) of conserving stubble at the conservation standards.


Brome Grass Population Dynamics In Relation To Control Systems, A H. Cheam, S I. Lee Jan 1989

Brome Grass Population Dynamics In Relation To Control Systems, A H. Cheam, S I. Lee

Experimental Summaries - Plant Research

To identify the level of control of brome grass under various rotation systems, 86C1.


Tactical Nitrogen Decisions For Wheat, J. W. Bowden, R. J. Lunt Jan 1989

Tactical Nitrogen Decisions For Wheat, J. W. Bowden, R. J. Lunt

Experimental Summaries - Plant Research

Trial 88MO41, 88WH40 (2CE), 88WH40 (4W), 89NO77, 89MO47, 89MO47, 89MO49, 89BA33 (1), 89BA33 (2), 89WH70 (1), 89WH70 (2)

Locations: Wannamal, WHRS, Grass Valley, Regan's Ford, Badg. New Block 3CE

In order to test tactical and other fertilizer decision making methods (Table 1), we carried out three trials in 1988 and a further seven trials in 1989 (Table 2).

To date this programme has provided a lot of information which can be used to test and validate current (and future) methods of predicting yield potential and nitrogen status of a crop as the season progresses. However, our inability to predict end …


Pasture Species Investigations., D. A. Nicholas Jan 1989

Pasture Species Investigations., D. A. Nicholas

Experimental Summaries - Plant Research

Trial 87WH50, 87NA77, 87KA39

Location: Wongan Hills, Kulin, Nyabing

Selection of subclover cultivars - early maturing.

To select in the field subterranean clover cultivars of early maturity having superior persistence and productivity.


The Grazing Value Of Medicago Murex., C. M. Saunders Jan 1989

The Grazing Value Of Medicago Murex., C. M. Saunders

Experimental Summaries - Plant Research

Trial 88KA92

Location: Potts Road, East Kojonup.

At present, limited information is available on the grazing value of Medicago murex cv. Zodiac on sheep live weights and wool growth. This trial was designed to provide data on the relative performance of sheep grazing Zodiac compared with the recommended subterranean clovers (Junee/Seaton Park) in the > 450mm rainfall zone in WA.


Interaction Of Rhizoctonia Root Rot On Wheat With Post Emergence Herbicides, W Macleod Jan 1989

Interaction Of Rhizoctonia Root Rot On Wheat With Post Emergence Herbicides, W Macleod

Experimental Summaries - Plant Research

Interaction of Rhizoctonia root rot on wheat with post emergence herbicides, 88E30. Location, aim, treatment, method, results, table1. Take-all inoculum levels in a ryegrass sward after treatment with hoegrass. 88MD30. Location, aim, treatment, method, results, Interaction of Pleiochaeta root rot on lupins with Simazine®, 88ME64, 88WH335, 88ME64. Location, aim, treatment, method, results, tables 1 to 8.


Planning For Horticultural Expansion On The Swan Coastal Plain, P Coghlan, Geoff Moore, Jim Dixon Jan 1989

Planning For Horticultural Expansion On The Swan Coastal Plain, P Coghlan, Geoff Moore, Jim Dixon

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

Horticulture is an intensive, high value form of agriculture highly dependant on the availability of good water supplies for the year-round production of fresh produce. Production increase in Western Australia and the encouragement and development of export markets has caused rapid expansion if the industry in recent years.

Expansion is expected to continue, placing severe pressure on available water supplies and suitable land close to markets. At present' 90 per cent of the Stase's horticultural land is on the Swan Coastal Plain and minor selected hills areas around Perth.


Effect Of Seed Phosphorus, Seed Size And Seedling Density On The Growth Of Lupins., M. M. Riley, M. D. Bolland, K. Adcock Jan 1989

Effect Of Seed Phosphorus, Seed Size And Seedling Density On The Growth Of Lupins., M. M. Riley, M. D. Bolland, K. Adcock

Experimental Summaries - Plant Research

Trial 89SC22

Location: South Carrabin Research Station, Hayden paddock.

Effect of seed phosphorus concentration, fertilizer P level, seed size and seeding rate on plant counts at 6 to 21 weeks.


Effects Of Seed Phosphorus Concentrations And The Source Of The Seed On Growth Of Lupins., M. M. Riley, M. D. Bolland, K. Adcock Jan 1989

Effects Of Seed Phosphorus Concentrations And The Source Of The Seed On Growth Of Lupins., M. M. Riley, M. D. Bolland, K. Adcock

Experimental Summaries - Plant Research

Trial 89EC31

Location: East Chapman Research Station.

The effect of seed phosphorus concentration, source of seed and fertilizer P level on plant counts from six to 20 weeks.


Harvest Index Of Lupins, Direct Drilling On Sandplain Soils., Rob Delane, Carmel Schmidt, Glenn Adam Jan 1989

Harvest Index Of Lupins, Direct Drilling On Sandplain Soils., Rob Delane, Carmel Schmidt, Glenn Adam

Experimental Summaries - Plant Research

Chemicals to improve pod setting in Lupins (Small plots), 89C23, 89GE74,

Chemicals to improve pod setting in Lupins (Large plots) 89GE72, 89GE75.


Cultivar Evaluation On Low Rainfall Heavy Textured Soils., Bradley Nutt Jan 1989

Cultivar Evaluation On Low Rainfall Heavy Textured Soils., Bradley Nutt

Experimental Summaries - Plant Research

a. Trial 88GE34

Cultivar evaluation in machine sown plots.
Location: NMRS

The higher seed yield of Serena compared to the other cultivars resulted in better early forage .production as well a legume dominated pasture.

b. Trial 88TS 63 and 88TS 65

Wheat yields following pastures.
Location: 88TS63 - Perenjori and 88TS65 - Three Springs.

There was no response to nitrogen in either biological yield or grain yield of wheat sown over volunteer based pasture at the Three Springs site. All pasture treatments resulted in similar wheat yields except for Sava because of poor control of the snail medic under the …


Aphid Tolerance Evaluation In Annual Medics., Bradley Nutt Jan 1989

Aphid Tolerance Evaluation In Annual Medics., Bradley Nutt

Experimental Summaries - Plant Research

Trial 89GE61

Location: East Chapman

Out of the 100 lines tested, 30 experimental lines were less affected (in terms of seed yield) by aphid damage than c.v. Parabinga.


Effect Of Seed Phosphorus Levels In Three Wheat Varieties And Fertilizer P Supply On Their Growth And Grain Yields., M. M. Riley, M. D. Bolland, K. Adcock Jan 1989

Effect Of Seed Phosphorus Levels In Three Wheat Varieties And Fertilizer P Supply On Their Growth And Grain Yields., M. M. Riley, M. D. Bolland, K. Adcock

Experimental Summaries - Plant Research

Trial 89WH74

Location: Wongan Hills Research Station, Field 4W

Effect of phosphorus and fertilizer on the growth and grain of wheat yields.


Potassium Nutrition Of Pastures On The Sandplain Soils Of Western Australia., Noeleen Edwards, M. Thomas Jan 1989

Potassium Nutrition Of Pastures On The Sandplain Soils Of Western Australia., Noeleen Edwards, M. Thomas

Experimental Summaries - Plant Research

Project: Potassium nutrition of pastures on the sandplain soils of Western Australia.

Determine the factors affecting the fate of native and applied potassium on sandplain soils.
Define current and residual response curve parameters for potassium applications. Develop recommendations for the economic management of soil potassium levels.

Trial 88B46, 88TS69, 89KO26

Maintenance application rates of potassium on sandplain soils.

Location: Badgingarra Research Station, new block, North Eneabba, Kojaneerup Research Block.

Trial 89BA24

Residual value of potassium on sandplain soils.

Location: Badgingarra Research Station

Trial 89MT46,

Potassium requirements of sub clover.

Location: Mt Barker Research Station.

Project: Potassium nutrition of lupins on …


Barley Agronomy Experiments., K. L. Young Jan 1989

Barley Agronomy Experiments., K. L. Young

Experimental Summaries - Plant Research

Trial 89E1, 89SG1, 89MT3

Barley variety x time of sowing trials.

Location: Esperance Downs Research Station, Salmon Gums Research Station, Mt Barker Research Station

To determine the optimum time of ear emergence for barley varieties which vary in maturity.

Trial 89ES2

Location: Melijinup Field Station

Barley variety x time of sowing trials

1. Assess the effect of aphids on the yield of barley at a range of sowing times.

2. Determine the optimum time of ear emergence for barley varieties which vary in maturity.

Trial 89E6

The effect of aphids on the yield of barley

Location: Esperance Downs Research Station. …


Introducing Onslow, Western Australian Department Of Agriculture Jan 1989

Introducing Onslow, Western Australian Department Of Agriculture

Grain and other field crops published reports

Onslow Barley........ a new breed of barley for the southern high rainfall areas (see map VH,H4 &H5). Suited to May plantings, Onslow is the first barley developed specifically for the long growing seasons in these areas.

For the first time barley growers have a variety designed for those 4 t/ha plus yields which research shows are possible with early sowing.

Onslow is the first of a new breed of barley cultivars developed in Western Australia specifically for the southern high rainfall areas which have a long growing season.


Land Capability Study Of The Shires Of Mandurah And Murray, M R. Wells Jan 1989

Land Capability Study Of The Shires Of Mandurah And Murray, M R. Wells

Land resources series

No abstract provided.


Trees For Windbreaks On Swan Coastal Plain Farms, Leon English, Ken Angell, Metropolitan District Office, Department Of Agriculture And Food, Western Australia Jan 1989

Trees For Windbreaks On Swan Coastal Plain Farms, Leon English, Ken Angell, Metropolitan District Office, Department Of Agriculture And Food, Western Australia

Bulletins 4000 -

Strong easterly and south-westerly winds are a feature of the Swan Coastal Plain and we receive frequent inquiries about which tree species are suitable for planting as windbreaks. When selecting trees for windbreaks you must match the species to the various soil types which occur along the Coastal Plain. The mature height of the tree is also an important consideration in good windbreak design. This Bulletin lists species which are suitable for windbreaks in descending order of mature height and indicates the soil type(s) on which they should be planted.


Bulletin 4358 - Western Australian Registered Field Crop Scheme Production Rules, Mark Holland, Peter Hill Sep 1988

Bulletin 4358 - Western Australian Registered Field Crop Scheme Production Rules, Mark Holland, Peter Hill

Bulletins 4000 -

The Western Australian Registered Field Crop Scheme is an industry cooperative scheme entered into voluntarily by the participants. Agriculture Western Australia, through its AGWEST Plant Laboratories business unit, administers the scheme and supervises industry agreed production and marketing guidelines.

The Registered Field Crop Scheme differs from certified seed schemes by reduced direct supervision of the production by Agriculture Western Australia.

Producers agree to abide by the following rules and are responsible for the correctness of the final product to meet the quality descriptions for each seed lot as described on the appropriate seed analysis statement and in these rules.

The …


Potential Of Surface Water Contamination From Three Triazine Herbicides, William W. Witt, Kip W. Sander Sep 1988

Potential Of Surface Water Contamination From Three Triazine Herbicides, William W. Witt, Kip W. Sander

KWRRI Research Reports

The movement of atrazine, cyanazine, and simazine from the site of application was monitored under conventional, reduced, and no-tillage conditions. Less water and soil was lost from the no-tillage and reduced tillage conditions. Conventional tillage conditions had about 66,000 L/ha runoff in 1986-87 and about 123,000 L/ha runoff in 1987-88. Seasonal rainfall was 885 mm in 1986-87 and 397 mm in 1987-88. The rainfall intensity was greater during the first two events in 1987 than the corresponding events in 1986. The first rainfall event in 1986 accounted for 91, 89, and 78% of the total seasonal loss of atrazine, cyanazine, …


Miscellaneous Production 23/87 - Animal Production In The Spinifex And Shrubland Regions Of Western Australia, D. Burnside Jul 1988

Miscellaneous Production 23/87 - Animal Production In The Spinifex And Shrubland Regions Of Western Australia, D. Burnside

Animal production and livestock published reports

The role of the Rangeland Management Branch is to promote the sustained economic use of the rangeland resource. It provides research and extension services to the pastoral industry, provides advice on the condition of the range resource to Government and provides technical information on rangelands to other rangeland managers. A principal objective to be met in fulfilling that role is the development and promotion of economically efficient place systems that conserve the rangeland resource. At the inaugural Pastoral Soil Conservation Districts Conference in Meekatharra in May 1987, pastoralist delegates emphasized the importance of achieving that objective within the various soil …


Timber Harvesting On Private Lands: The Washington Timber– Fish–Wildlife Agreement, John P. Mcmahon Jun 1988

Timber Harvesting On Private Lands: The Washington Timber– Fish–Wildlife Agreement, John P. Mcmahon

Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)

24 pages.

Contains 3 pages of references.


Bay/Delta Standards Memorandum And Exhibits, Thomas J. Graff Jun 1988

Bay/Delta Standards Memorandum And Exhibits, Thomas J. Graff

Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)

47 pages.


The 1987 Nonpoint Source Pollution Amendments And State Progress Under The New Program, John H. Davidson Jun 1988

The 1987 Nonpoint Source Pollution Amendments And State Progress Under The New Program, John H. Davidson

Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)

143 pages.

Contains 4 pages of references.


Antidegradation And Nonpoint Source Pollution In The West, H. Michael Anderson Jun 1988

Antidegradation And Nonpoint Source Pollution In The West, H. Michael Anderson

Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)

31 pages.

Contains references.


Soil Erosion, Agrichemicals And Water Quality: A Need For A New Conservation Ethic?, Christine Olsenius Jun 1988

Soil Erosion, Agrichemicals And Water Quality: A Need For A New Conservation Ethic?, Christine Olsenius

Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)

24 pages.

Contains references.


The San Joaquin–Sacramento Delta, David R. Beringer Jun 1988

The San Joaquin–Sacramento Delta, David R. Beringer

Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)

20 pages.

Contains 2 pages of references.


Public Land Livestock Grazing, Water Quality And Riparian Ecosystems: The Evolving Legal And Technical Context, Richard H. Braun Jun 1988

Public Land Livestock Grazing, Water Quality And Riparian Ecosystems: The Evolving Legal And Technical Context, Richard H. Braun

Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)

8 pages.

Contains 1 page of references.


Legal Issues: San Francisco Bay, Sacramento-San Joaquin River Delta And Estuary, Stuart L. Somach Jun 1988

Legal Issues: San Francisco Bay, Sacramento-San Joaquin River Delta And Estuary, Stuart L. Somach

Water Quality Control: Integrating Beneficial Use and Environmental Protection (Summer Conference, June 1-3)

48 pages.

Contains footnotes.