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Articles 9691 - 9720 of 9782
Full-Text Articles in Physical Sciences and Mathematics
Managing Pastures For Long-Term Prosperity, Hugh Pringle, Jenny Riches
Managing Pastures For Long-Term Prosperity, Hugh Pringle, Jenny Riches
Natural resources published reports
A Workshop held by the Sandstone Land Conservation District Committee
Lake Mason Station
April 1994
A workshop hosted by Sandstone Land Conservation District Committee (LCDC) was held at Lake Mason station on 28 April 1994. This workshop was based on two previous workshops hosted by the Kalgoorlie and north-eastern Goldfields LCDCs in May 1991 (Pringle et al. 1992). The success of the earlier workshops prompted the rangeland survey team in association with the Sandstone LCDC and the Kalgoorlie District Office of Agriculture Western Australia to initiate the project.
The aims were to provide a summary of local wisdom regarding pasture …
Bulletin 4329 - Environmental Hazards Of Farming In Western Australia, Greg Hamilton, Ian Foster, Philip M. Goulding
Bulletin 4329 - Environmental Hazards Of Farming In Western Australia, Greg Hamilton, Ian Foster, Philip M. Goulding
Bulletins 4000 -
This Bulletin is one of a series on crop establishment practices which minimise soil disturbance and improve stubble retention. In partnership with primary producers, Agriculture Western Australia 1s focussed on improved and profitable farming which conserves or improves the quality of the State's soil resources.
Agricultural land in Western Australia is naturally fragile and susceptible to degradation. Salinity and wind erosion are the most visible and significant forms of degradation, but all forms are present over large areas of agricultural land (House of Representatives Enquiry into Land Degradation in Western Australia, 1988).
The fragility of Western Australia's soils has been …
The Real Cost Of Beef: A Monetary Assessment Of The Environmental Degradation Caused By Beef Production, Carolyn Babcock
The Real Cost Of Beef: A Monetary Assessment Of The Environmental Degradation Caused By Beef Production, Carolyn Babcock
UNLV Theses, Dissertations, Professional Papers, and Capstones
The environmental degradation caused by beef production is severe. The current literature assesses the ecological damage, but falls short of assigning a per pound dollar amount to reflect the real cost of beef. In the United States, most of the environmental focus has been centered around the use of public lands for grazing and the grazing fee the government considers appropriate. The fee covers the maintenance of the grazing program, which includes maintenance of the actual land. This paper will concentrate on beef-related environmental degradation and select specific damage for monetary valuation.
Isolation From Soil Microorganisms That Are Inhibitory To Wheat Seeding Pathogens, Kynita Wilson-Humphrey
Isolation From Soil Microorganisms That Are Inhibitory To Wheat Seeding Pathogens, Kynita Wilson-Humphrey
McCabe Thesis Collection
Many diseases caused by bacteria, viruses, or fungi are responsible for the ruin of a great number of crops annually. At present, many of these crops are being treated for diseases by synthetic or man-made chemicals. Some of the chemicals have been proved to have adverse effects on the environment, including humans and animals. Very few non-chemical means are available to farmers at this time to control these pathogens. This is due to the fact that many of the means of control have little effect against the pathogens or diseases. This research attempts to isolate microorganisms from the soil which …
Esperance Region Catchment Planning Strategy, John Platt, Brendan Nicholas, Rod Short, Stephen Gee
Esperance Region Catchment Planning Strategy, John Platt, Brendan Nicholas, Rod Short, Stephen Gee
Natural resources published reports
The Esperance Region Catchment Planning Strategy project was initiated by the Esperance Land Conservation District Committee.
This report provides a reference document for farmers and other land managers such as government agencies and local government, and should help them to strategically focus their catchment planning activities.
It will help land managers to identify the major catchments and land systems in their area, management issues for long term sustainability, and a regional strategy for catchment planning.
Catchment planning involves both technical and social processes.
Technically it is a process of planning the sustainable use of water resources within a catchment.
Bulletin No 4315 - Western Australian Agricultural & Fishery Exports At A Glance...1995/96, Graeme Robertson Dr, P. P. Rogers
Bulletin No 4315 - Western Australian Agricultural & Fishery Exports At A Glance...1995/96, Graeme Robertson Dr, P. P. Rogers
Bulletins 4000 -
Second edition (revised and updated) January 1997.
Western Australia's economic growth and high productivity is based on a well established export-oriented economy that relies heavily on primary production.
Our abundant and diverse range of agricultural and fish products is supported by highly innovative and dynamic primary industries. These are backed by modern financial and physical infrastructure.
Western Australia's agricultural industries and fisheries have an international reputation for a professional approach to business and a proven track record in producing and supplying food and fibre products of consistently high quality. Clean air, unpolluted oceans and waterways, and abundant quality farmland are …
Comparison Of Daily Water Table Depth Prediction By Four Simulation Models, Eric D. Desmond, Andrew D. Ward, Norman R. Fausey, Stephen R. Workman
Comparison Of Daily Water Table Depth Prediction By Four Simulation Models, Eric D. Desmond, Andrew D. Ward, Norman R. Fausey, Stephen R. Workman
Biosystems and Agricultural Engineering Faculty Publications
The Agricultural Drainage And Pesticide Transport (ADAPT) model was compared to the water management simulation models DRAINMOD, SWATREN, and PREFLO. SWATREN and PREFLO are one-dimensional finite-difference models while ADAPT and DRAINMOD are one-dimensional mass balance models. ADAPT, an extension of the computer model GLEAMS, also provides chemical transport information. All four models were tested against field data from Aurora, North Carolina. Observed water table depth data were collected during 1973 through 1977 from a water table management field experiment with three subsurface drain spacing treatments of 7.5, 15, and 30 m.
Both the standard error of estimate and the average …
Bulletin 4307 - Grass Control In Pastures Using Herbicides, Alexandra Wallace
Bulletin 4307 - Grass Control In Pastures Using Herbicides, Alexandra Wallace
Bulletins 4000 -
This Bulletin discusses three methods for herbicide control of grasses in pastures:
- pasture manipulation, in the early stages of pasture growth;
- spray-topping late in the growing season; and
- hay freezing, late in the growing season.
Arkansas Rice Research Studies 1994, B. R. Wells
Arkansas Rice Research Studies 1994, B. R. Wells
Arkansas Agricultural Experiment Station Research Series
The research reports in this publication represent one year of results; therefore, these results should not be used as a basis for longterm recommendations. Several research reports in this publication dealing with soil fertility also appear in Arkansas Soil Fertility Studies 1994, Arkansas Agricultural Experiment Station Research Series 443. This duplication is the result of the overlap in research coverage between the two series and our effort to inform Arkansas rice producers of all the research being conducted with funds from the rice check-off.
Washington State Initiatives For Sustainable Water Use, Kenneth O. Slattery
Washington State Initiatives For Sustainable Water Use, Kenneth O. Slattery
Sustainable Use of the West's Water (Summer Conference, June 12-14)
8 pages.
Is Sustainable Agriculture Possible In The Arid West?: The Example Of The Ogallala Aquifer, John Opie
Is Sustainable Agriculture Possible In The Arid West?: The Example Of The Ogallala Aquifer, John Opie
Sustainable Use of the West's Water (Summer Conference, June 12-14)
16 pages.
Contains 2 pages of references.
Agenda: Sustainable Use Of The West's Water, University Of Colorado Boulder. Natural Resources Law Center
Agenda: Sustainable Use Of The West's Water, University Of Colorado Boulder. Natural Resources Law Center
Sustainable Use of the West's Water (Summer Conference, June 12-14)
Conference organizers and/or faculty included University of Colorado School of Law professors David H. Getches, Lawrence J. MacDonnell, Teresa A. Rice, Elizabeth A. Rieke and Charles F. Wilkinson.
Sustainable development is on the policy agenda for the '90s. What does sustainability mean? Is it a realistic concept? Are water rights compatible with sustainable use? The Center's 16th annual summer conference will explore the meaning of sustainability in the context of the West's demands, development, and natural values. Presentations by leading experts will address the broad concept of sustainable development, with a particular look at Arizona's experience. The focus will be …
Effects Of Tactical Responses And Risk Aversion On Farm Wheat Supply, Ross S. Kingwell
Effects Of Tactical Responses And Risk Aversion On Farm Wheat Supply, Ross S. Kingwell
Natural Resources Research Articles
A discrete stochastic programming model of the farming system of the eastern wheatbelt of Western Australia is used to examine the effect of tactical responses and risk aversion on wheat supply. Including within-season tactical changes to wheat areas decreases the own-price elasticity of supply. By contrast, introducing risk aversion has no consistent effect on the own-price elasticity of supply. The implications for supply models are discussed.
Buntine-West Wubin And West Maya Catchment Management Report, William Oldfield, Natalie Hunt
Buntine-West Wubin And West Maya Catchment Management Report, William Oldfield, Natalie Hunt
Natural resources published reports
Buntine West/Wubin land Conservation District was formed when a number of landholders wanted to extend and join on to some existing deep drains. At first the group concentrated on the deep drains with some farmers joining on anda project to connect the drains up througha naturally occurring saline area and to run the main drain into a salt lake system. Funding was attained for 50% of the project and farmers with drains paid for the rest. It was considered unfair for landowners whose land this drain went through to pay all the cost as it was not draining arable land. …
Alternative Approaches To On-Farm Research And Technology Exchange, Charles A. Francis, Victoria Mundy, Rhonda Janke, James King
Alternative Approaches To On-Farm Research And Technology Exchange, Charles A. Francis, Victoria Mundy, Rhonda Janke, James King
CARI Extension and Education Materials for Sustainable Agriculture
Decision Case Studies are Ideal for On-Farm Research by R. Kent Crookston (University of Minnesota)
Use of On-Farm Research by Farmers for Technology Development and Transfer by Stewart Wuest, Baird Miller, Stephen Guy, Russ Karow, Rojer Veseth, and Donald Wysocki (Washington State University, University of Idaho, and Oregon State University)
Best Information for Choosing Crop Varieties by Dale Hicks and Robert Stucker (University of Minnesota)
Adaptability Analysis for Diverse Environments by Peter Hildebrand and John Russell (University of Florida and Washington State University)
Complementary Abilities and Objectives in On-Farm Research by Derrick Exner (Iowa State University)
Credibility of On-Farm Research …
Understanding Fertilisers For Table Grapes, B. H. Goldspink, I. Cameron, J. Campbell-Clause, N. Lantzke, C. Gordon
Understanding Fertilisers For Table Grapes, B. H. Goldspink, I. Cameron, J. Campbell-Clause, N. Lantzke, C. Gordon
Viticulture research reports
A course run by the Department of Agriculture, Western Australia, August 1995.
The purpose of this publication is to clarify the role fertilisers play in commercial table grape production and to detail methods of selecting fertilisers. This selection process however is not easy as there are over 600 registered fertilisers in Western Australia.
In deciding which is the best fertiliser for a particular property many factors have to be considered. These include:
* Age of vine
* Rootstock
* Variety of table grape
* Soil type
* Soil chemistry
* Irrigation methods
* Previous fertiliser history Previous yield, vigour and …
Grain Legume And Canola Autumn Updates 1995, David Williams
Grain Legume And Canola Autumn Updates 1995, David Williams
Grain and other field crops published reports
Grain legumes
- Chickpea
- Field pea
- Lentil
- Faba beans
Canola essentials:
Site selection -Paddock selection is critical for a successful canola crop. Avoid paddocks with waterlogging, wind erosion and broadleaf weeds - particularly wild radish, turnip, mustard and doublegees.
Soil type - Canela grows well on most soil types, however it prefers well drained gravel soils, red loams, sandy _loams and deeper duplex soils. Soil pH levels (in CaCl2) of 4.5 to 8.0 are suitable. Soil test paddock for pH, phosphorus, and potassium levels.
Rotation - Grow canola after manipulated pasture, lupins or other grain …
Land Management Report For The Kent River Catchment, Sue Kelly
Land Management Report For The Kent River Catchment, Sue Kelly
Natural resources published reports
The Kent River Catchment is located in the South-West of Western Australia, approximately between latitudes 34° 15' and 35° 10' South and longitudes 116° 45" and 117° 50° East. The north-eastern boundary of the catchment stretches to the Albany Highway at Tenterden, and from there the catchment curves towards Rocky Gully before continuing to the South Coast (Figure 1.1.1). The catchment is located within the Shires of Cranbrook, Plantagenet and Denmark.
The Kent River Catchment is part of Basin 604, which is the Water Authority descriptor for the Kent, Bow and Kordabup River catchments collectively. Basin 604 has a total …
A Guide To Floodplain Cattle Fencing, Department Of Agriculture, Western Australia, Main Roads, Western Australia
A Guide To Floodplain Cattle Fencing, Department Of Agriculture, Western Australia, Main Roads, Western Australia
Animal production and livestock published reports
A seminar and workshop was held at Fitzroy Crossing in October 1993 to address the consequences of flooding to landholders and communities.
Damage to flood plain fencing was identified as one of the major concerns to landholders.
An outcome from the workshop was the decision to draw on local knowledge and collate information on options for fence and floodgate designs.
This information was to be made available to land holders and other interested parties - hence this publication.
Msda A Machinery Selection Decision Aid For Stubble Management Practices, Linda Leonard, Andrew Green
Msda A Machinery Selection Decision Aid For Stubble Management Practices, Linda Leonard, Andrew Green
Grain and other field crops published reports
MSDA is a user friendly program developed to help farmers predict stubble outcomes before acting on their management practice. This manual is an accompaniment to a computer program designed on Micorsoft Excel-macros. Its aim is to help farmers assess their current machinery and stubble handling ability and view options that may be adopted as best practice for their properties.
The program is designed with the complete season in mind. Information is gathered on the full complement of machinery used from harvest through to seeding, to allow farmers to see all choices available and enable them to choose the best system …
Miscellaneous Publication 39/94 - Horticulture On The Swan Coastal Plain - A Study Of Grower Concerns, Department Of Agriculture, Western Australia, Water Authority, Western Australia, Csiro, Australia
Miscellaneous Publication 39/94 - Horticulture On The Swan Coastal Plain - A Study Of Grower Concerns, Department Of Agriculture, Western Australia, Water Authority, Western Australia, Csiro, Australia
Horticulture published reports
This study reports on issues, concerns and desired actions expressed in 60 interviews with people directly involved in horticulture on the Swan Coastal Plain in the region between Gingin and Mandurah. I stress that in compiling this report every effort has been made to avoid biasing or changing the information provided by growers.
These interviews were conducted over ten days during April 1994.
The study also presents information on what is currently being done to address some of these concerns by the Department of Agriculture and the Water Authority of Western Australia as well as other agencies and organisations and …
Bulletin 4279 - Streamlining - An Environmentally Sustainable Drainage Network For The Swan Coastal Plain (Peel-Harvey Catchment), Garry Heady, Neil Guise
Bulletin 4279 - Streamlining - An Environmentally Sustainable Drainage Network For The Swan Coastal Plain (Peel-Harvey Catchment), Garry Heady, Neil Guise
Bulletins 4000 -
Community Catchment Centre Pinjarra
A network of over 1400 kilometres of drains and modified natural waterways constructed by the Public Works Department criss-crosses the Peel-Harvey catchment. There are also over 3300 kilometres of minor drains and natural waterways in this same region.
The expansion of agriculture relied on this extensive drainage network, which was designed to ensure rapid drainage of the region. Unfortunately there was little regard to future environmental consequences.
Along with drainage water, these same drains now carry high loads of silt and nutrients. Many of the drains are also degraded and require expensive maintenance annually.
Should Australia Export Its Native Birds?, Ross Kingwell
Should Australia Export Its Native Birds?, Ross Kingwell
Biosecurity Research Articles
Commercial export from Australia of native birds, wild or captive bred, is prohibited. This paper firstly describes the current legislation and regulations that restrict the export of native birds and discusses why governments have adopted such a regulatory approach to bird species preservation. Secondly, the paper reviews the debate concerning the export ban, pointing out strengths and weaknesses in arguments and indicating the important role of CITES. Lastly, the paper outlines a new case for a conditional lifting of the ban, whereby DNA fingerprinting is used to establish transferable property rights to overcome a main source of market failure in …
Arkansas Rice Research Studies 1993, B. R. Wells
Arkansas Rice Research Studies 1993, B. R. Wells
Arkansas Agricultural Experiment Station Research Series
The research reports in this publication represent one year of results; therefore, these results should not be used as a basis for longterm recommendations. Several research reports in this publication dealing with soU fertility also appear in Arkansas Soil Fertility Studies 1993, Arkansas Agricultural Experiment Station Research Series 436. This duplication is the result of the overlap in research coverage between the two series and our effort to inform Arkansas rice producers of all the research being conducted with funds from the rice check-off.
Bulletin 4283 - Nitrogen Fertilisers For Cereal Production, M. G. Mason
Bulletin 4283 - Nitrogen Fertilisers For Cereal Production, M. G. Mason
Bulletins 4000 -
Because fertiliser prices are high, it is important to understand what affects the response to fertilisers by crops.
Among the many factors influencing crop response to nitrogen applications, the most important are the season, soil type, paddock history, time of application and source of nitrogen. Before deciding whether to use nitrogen on a cereal crop, which source to use and at what rate, you need some understanding of how these factors work.
Greatest responses to nitrogen fertilisers can be expected in areas with a relatively long growing season. In such areas light soils with a low nitrogen status give the …
Delaying The Development Of Herbicide Resistant Ryegrass By Using Alternative Weed Control Strategies, A. J. Diggle, G. S. Gill, J. E. Holmes
Delaying The Development Of Herbicide Resistant Ryegrass By Using Alternative Weed Control Strategies, A. J. Diggle, G. S. Gill, J. E. Holmes
Biosecurity published reports
Alternative strategies to control ryegrass in wheat lupin rotations are worth approximately 15 dollars per hectare for each 50% reduction achieved in plant or seed numbers. This figure has been calculated for circumstances similar to those found at Wongan Hills, and it holds in all cases where ryegrass is still under control using standard herbicides.
Farmers should adopt any ryegrass strategy in addition to that normally practised, so long as the cost to control ratio is less than $15/ha/50% kill. This applies even where good control is being achieved using grass selective herbicides, regardless of the number of previous applications …
Bulletin 4278 - How To Use Wide Furrow Sowing For Improved Crop Production On Water Repellent Sand, Paul Blackwell, Grant Morrow, Tony Webster
Bulletin 4278 - How To Use Wide Furrow Sowing For Improved Crop Production On Water Repellent Sand, Paul Blackwell, Grant Morrow, Tony Webster
Bulletins 4000 -
Wide furrow sowing is a method for successfully establishing crops of lupins or cereals on non-wetting sands, and improving crop establishment on non-repellent sands. The same principles can be used to assist establishment of fodder shrubs and long-term pasture (e.g. tagasaste and Rhodes grass).
An Inventory And Condition Survey Of The Murchison River Catchment, Western Australia, Peter James Curry, A L. Payne, K A. Leighton, P Hennig, D A. Blood
An Inventory And Condition Survey Of The Murchison River Catchment, Western Australia, Peter James Curry, A L. Payne, K A. Leighton, P Hennig, D A. Blood
Technical Bulletins
The inventory and condition survey of the Murchison River catchment and surrounds, undertaken by the Department of Agriculture between 1985 and 1988, 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 by field work during 1985-88 …
An Inventory And Condition Survey Of Rangelands In The North-Eastern Goldfields, Western Australia, H J. Pringle, S A. Gilligan, A M E Van Vreeswyk
An Inventory And Condition Survey Of Rangelands In The North-Eastern Goldfields, Western Australia, H J. Pringle, S A. Gilligan, A M E Van Vreeswyk
Technical Bulletins
The inventory and condition survey of the north-eastern Goldfields, undertaken by the Department of Agriculture and Food, Western Australia (DAFWA) between 1988 and 1990, 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 covers about 100 …
Miscellaneous Publication 42/93 - Development And Dissemination Of Design Methods For Rangeland Paddocks Which Maximise Animal Production And Minimise Land Degradation, Shane Cridland, Mark Stafford Smith
Miscellaneous Publication 42/93 - Development And Dissemination Of Design Methods For Rangeland Paddocks Which Maximise Animal Production And Minimise Land Degradation, Shane Cridland, Mark Stafford Smith
Animal production and livestock published reports
Surveys of rangeland resources in Western Australia to date have shown that 23% of the area surveyed is in poor range condition. Poor condition is characterised by the loss of perennial vegetation allowing wind and water erosion. Approximately another 37% is in only fair range condition (Curry and Hacker 1990).
The loss of range condition is partly due to uneven use of paddocks by sheep and cattle. The areas close to water and the preferred pasture types are often over-utilised, while areas well away from water and less preferred pasture types are under-utilised. The result is that rangeland in good, …