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Articles 31 - 60 of 1406
Full-Text Articles in Soil Science
Yield Response To Deep Ripping Of Canola, Wheat And Barley On Soils With Multiple Constraints, Shahab Pathan, David Hall, Tony Murfit
Yield Response To Deep Ripping Of Canola, Wheat And Barley On Soils With Multiple Constraints, Shahab Pathan, David Hall, Tony Murfit
The State of Soil Science in WA
Yellow Tenosols (yellow deep sand) in the Western Australian grainbelt often have multiple constraints to crop production, which include non-wetting, subsoil compaction and acidity. As a result of these multiple limitations these soils have been considered poor cropping soils with estimated costs in lost production exceeding $200/ha. A systems approach to managing these soils has been developed to improve crop production, which includes a winter fallow, limesand application and deep tillage in late winter and seeding canola in the following autumn.
Impact Of Lime And Gypsum On Wheat Yield, Soil And Solution Properties In The Short And Long Term, Geoff Anderson, Shahab Pathan, David Hall, Rajesh Sharma, James Easton
Impact Of Lime And Gypsum On Wheat Yield, Soil And Solution Properties In The Short And Long Term, Geoff Anderson, Shahab Pathan, David Hall, Rajesh Sharma, James Easton
The State of Soil Science in WA
Subsoil aluminium (Al) toxicity or soils with AlCaCl2 content > 2.5 mg Al kg-1 in the soil layers below 10 cm is a significant problem in south Western Australia. Both lime and gypsum can be used to treat subsoils Al toxicity because these products decrease the toxic effect of soil Al leading to an increase in crop grain yields. In this presentation, results are reported from three field lime by gypsum rate experiments located in the east of Merredin.
Influence Of Lime And Crop Rotation On Soil Nitrogen, Dry Matter Production And Microbial Biomass; A Field Trial, Merredin, Wa, Manjula Premaratne, Daniel V. Murphy, Craig Scanlan, Frances C. Hoyle
Influence Of Lime And Crop Rotation On Soil Nitrogen, Dry Matter Production And Microbial Biomass; A Field Trial, Merredin, Wa, Manjula Premaratne, Daniel V. Murphy, Craig Scanlan, Frances C. Hoyle
The State of Soil Science in WA
Nitrogen (N) fertilisers are applied to the soil to meet crop N demands. A large proportion of Western Australian (WA) cropping soils are acidic, decreasing access to plant available nutrients. Application of lime is generally the most effective means of ameliorating increasing soil acidity. Meanwhile, legumes are grown rotationally with cereals to increase plant-available soil N levels. We used a field experiment at Merredin, WA (Latitude -31.483347; Longitude 118.219093) to measure the influence of historic lime application and crop rotation on soil N availability and microbial biomass carbon (MBC).
Investigation Of The Common Mycorrhizal Network Concept: Plant Growth Responses In Simulated Intercropping Of A Legume And Grass Under Water Stress, Bede S. Mickan, Miranda Hart, Zakaira Solaiman, Kadambot H.M. Siddique, Sasha Jenkins, Lynette K. Adams
Investigation Of The Common Mycorrhizal Network Concept: Plant Growth Responses In Simulated Intercropping Of A Legume And Grass Under Water Stress, Bede S. Mickan, Miranda Hart, Zakaira Solaiman, Kadambot H.M. Siddique, Sasha Jenkins, Lynette K. Adams
The State of Soil Science in WA
It is widely claimed that the common mycorrhizal network (CMN) plays a significant role in facilitated transfer of nutrients between plants. This experiment investigated the role of a common mycorrhizal network between a C3 legume and a C4 grass under nutrient and water-limited conditions.
Microalgae And Phototrophic Purple Bacteria For Nutrient Recovery From Agri-Industrial Effluents; Influences On Plant Growth, Rhizosphere Bacteria, And Putative C & N Cycling Genes, Somayeh Zarezadeh, Bede S. Mickan, Sasah Jenkins, Tim Hulsen, Hossein Raihi, Navid R. Moheiman
Microalgae And Phototrophic Purple Bacteria For Nutrient Recovery From Agri-Industrial Effluents; Influences On Plant Growth, Rhizosphere Bacteria, And Putative C & N Cycling Genes, Somayeh Zarezadeh, Bede S. Mickan, Sasah Jenkins, Tim Hulsen, Hossein Raihi, Navid R. Moheiman
The State of Soil Science in WA
Microalgae (MA) and purple phototrophic bacteria (PPB) have the ability to remove and recover nutrients from digestate (anaerobic digestion effluent) and pre-settled pig manure that can be utilized as a bio-fertilizer. The objective of this study was to compare the effect of biologically recovered nutrients from MA and PPB in relation to plant growth and soil biological processes involved in nitrogen & carbon cycling.
A Fast And Inexpensive Molecular Biological Assay To Assess Soil Health, Fiona Mcdonald, Falko Mathes, Peter Keating
A Fast And Inexpensive Molecular Biological Assay To Assess Soil Health, Fiona Mcdonald, Falko Mathes, Peter Keating
The State of Soil Science in WA
Soil health and biology is capturing public imagination due to its significance in organic and regenerative agriculture and its role in mitigating climate change (a location for potential carbon sequestration). Programs centred on soil health are supported by farmers and funding bodies such as the Soil Biology Initiative (Grains Research and Development Corporation), the National Landcare Program, and the Cooperative Research Centre for High Performance Soils. Additionally, global businesses are diverting resources into understanding soil and crop microbiomes to develop novel technologies that increase soil health and crop productivity to commercialise a variety of products including soil amendments (e.g. sea …
Geology, Soils And Climate Of The Margaret River Wine Region, Peter J. Tille, Angela Stuart-Street, Peter S. Gardiner
Geology, Soils And Climate Of The Margaret River Wine Region, Peter J. Tille, Angela Stuart-Street, Peter S. Gardiner
All other publications
This report is an extract from the broader description and analysis of the Geology, soils and climate of Western Australia's wine regions. It expands on the brief descriptions in the second edition of 'Viticulture' (Coombe & Dry 2004) concerning the soils and landscapes of Western Australia’s main wine growing regions. We have tailored this report extract to the specific needs of the Margaret River wine region. It contains local soil names and soil-landscape zones and systems maps.
The wine industry recognises the importance of giving customers an understanding of the vines’ environment and how that may influence wine character …
A Simple Guide For Describing Soils, Angela Stuart-Street, Nicolyn Short Dr, Paul Galloway, Noel R. Schoknecht
A Simple Guide For Describing Soils, Angela Stuart-Street, Nicolyn Short Dr, Paul Galloway, Noel R. Schoknecht
All other publications
Soils are enormously diverse and can be very confusing to understand and talk about. This simple guide for describing soils helps to identify the most important parts of a soil profile and provide an easy way to understand and explain what you see. It gives you a step-by-step guide of what soil properties to describe and how to describe them, along with the tools to make basic soil classifications. The soil descriptors help you to identify the soil type and aid in assigning a simple and standardised name to the soil. While this guide is designed to link with a …
The Effect Of Soil Ph On Phosphorus Content Of Clover Pasture, David Weaver, Robert Summers, David Rogers, Peta Richards
The Effect Of Soil Ph On Phosphorus Content Of Clover Pasture, David Weaver, Robert Summers, David Rogers, Peta Richards
Resource management technical reports
Testing of pasture soils from 2009 to 2018, as part of DPIRD’s Whole Farm Nutrient Mapping (WFNM) project in the coastal catchments of south-west Western Australia (WA), indicated that soil pH was so low it could be limiting plant access to nutrients. Observations by some farmers who had been involved in the soil testing were that lime application had not increased pasture production, even when pHCa (pH measured in calcium chloride) tests indicated that phosphorus (P) should become more available by increasing soil pH. Farmers also wanted to know if they needed to apply more P than soil testing …
Soil Amendment And Soil Testing As Nutrient Reduction Strategies For The Peel Integrated Water Initiative, Robert Summers, Peta Richards, David Weaver, David Rowe
Soil Amendment And Soil Testing As Nutrient Reduction Strategies For The Peel Integrated Water Initiative, Robert Summers, Peta Richards, David Weaver, David Rowe
Resource management technical reports
The Transform Peel program focuses on 42 000 hectares (ha) due east of Mandurah called the Peel Food Zone, 75 kilometres (km) south of Perth in the shires of Murray and Serpentine Jarrahdale and includes an assessment of intensified and enclosed agriculture and a business park. The Peel Integrated Water Initiative was developed through Transform Peel to identify water sources and minimise the effect of these projects on water quality by reducing the nutrient loads discharged into the Peel–Harvey Estuarine System, which has been suffering from poor water quality for this reason.
The mineral sand miner MZI Resources Pty Ltd …
Best Practice Soil Sampling To Depth The Key To Enable Growers To Manage Soil Acidity, Stephen Carr
Best Practice Soil Sampling To Depth The Key To Enable Growers To Manage Soil Acidity, Stephen Carr
The State of Soil Science in WA
Soil acidity affects approximately 50 million hectares of agricultural land in Australia, predominantly in Western Australia (WA) and New South Wales (State of the Environment 2011 committee). Subsurface acidity below 0.1 m, in particular, is a major land degradation issue throughout the WA wheatbelt. Soil acidification is an inevitable consequence of productive agriculture, largely through the addition of acidifying fertilizers, leaching of nitrates and removal of alkaline plant products.
What Lies Deep Beneath – Acid Sulfate Soil Impacts On Groundwater Resources Used For Irrigation, Brad Degens
What Lies Deep Beneath – Acid Sulfate Soil Impacts On Groundwater Resources Used For Irrigation, Brad Degens
The State of Soil Science in WA
Over 17 years have passed since the hazards posed by Acid Sulfate Soils (ASS) were recognised in WA with a catastrophic oxidation event during dewatering of a development in Perth’s northern suburbs. Since then, regional mapping has identified ASS risks lies beneath over 6000 km2 (about half) of the Swan Coastal plain. The risks posed by these soils are mostly to water quality and aquatic ecosystems rather than the directly to soils for agricultural production purposes.
Identification And Classification Of “New” Semi-Arid Soils From The Pilbara Wa With Potential Additions To The Australian Soil Classification, Henry Smolinski, Dennis Van Gool
Identification And Classification Of “New” Semi-Arid Soils From The Pilbara Wa With Potential Additions To The Australian Soil Classification, Henry Smolinski, Dennis Van Gool
The State of Soil Science in WA
As part of the Department of Primary Industries and Regional Development’s (DPIRD) Transforming Agriculture in the Pilbara (TAP) project, a land assessment of the region was conducted to identify areas with potential for irrigated agriculture. The morphology of the dominant soils is described together with their chemical and physical properties.
The All New Australian Soil Classification, Noel R. Schoknecht
The All New Australian Soil Classification, Noel R. Schoknecht
The State of Soil Science in WA
An upgraded 3rd Edition of the ASC will be published in 2020. The most significant change will be the incorporation of a new soil Order - the Arenosols (deep sandy soils) improving its relevance to Western Australian soils. Another planned improvement is providing the classification for free in a number of formats – including the web, a downloadable print-ready pdf and an e-publication – all available on the Soil Science Australia website.
Variable Aluminium Toxicity And Root Distribution In Acidic Soil Profiles, Paul Damon, Gaus Azam, Craig Scanlan, Chris Gazey
Variable Aluminium Toxicity And Root Distribution In Acidic Soil Profiles, Paul Damon, Gaus Azam, Craig Scanlan, Chris Gazey
The State of Soil Science in WA
Subsoil acidity currently affects two thirds of the arable soils in the WA wheatbelt. At acidic soil pH, aluminium (Al) is solubilised from the solid phase into soil solution, creating a direct and localised toxicity to plant roots. Aluminium toxicity to plant roots constrains crop productivity by reducing root proliferation through soil, and inhibiting the capacity of roots to tolerate other constraints, such as compaction. Ongoing acidification of the subsoil is a direct artefact of the productive farming systems that are required to feed our world’s growing appetite for grain and livestock products.
Influence Of Lime And Crop Rotation On Soil Nitrogen, Dry Matter Production And Microbial Biomass; A Field Trial, Merredin, Wa, Manujla Premaratne, Daniel V. Murphy, Craig Scanlan, Frances C. Hoyle
Influence Of Lime And Crop Rotation On Soil Nitrogen, Dry Matter Production And Microbial Biomass; A Field Trial, Merredin, Wa, Manujla Premaratne, Daniel V. Murphy, Craig Scanlan, Frances C. Hoyle
The State of Soil Science in WA
Nitrogen (N) fertilisers are applied to the soil to meet crop N demands. A large proportion of Western Australian (WA) cropping soils are acidic, decreasing access to plant available nutrients. Application of lime is generally the most effective means of ameliorating increasing soil acidity.
Vacuum Drying Soil Samples Is A Low-Temperature Alternative To Conventional Oven Drying When Determining Soil Water Repellence, Enoch Wong, Philip R. Ward, Matthias Leopold, Daniel V. Murphy, Louise Barton
Vacuum Drying Soil Samples Is A Low-Temperature Alternative To Conventional Oven Drying When Determining Soil Water Repellence, Enoch Wong, Philip R. Ward, Matthias Leopold, Daniel V. Murphy, Louise Barton
The State of Soil Science in WA
Here we investigated a low-temperature (20˚C) soil drying technique to generate soil water contents equivalent to those achieved by conventional oven drying (105˚C). The effect of drying temperature, plus aeration status (oxic or anoxic), on SWR was also investigated.
Soil Exchangeable Cations Increase Microbial Carbon Use Efficiency And Microbial Growth In Acidic Soils, Emilia Horn
Soil Exchangeable Cations Increase Microbial Carbon Use Efficiency And Microbial Growth In Acidic Soils, Emilia Horn
The State of Soil Science in WA
Microbial growth and function is influenced by the properties of the surrounding soil where surface chemistry mediates interactions between individual organisms and their local microenvironment. We hypothesised that the addition of exchangeable base cations, necessary for microbial biochemical function, will increase microbial growth in acidic soils.
Bacterial Processes Associated With Soil C And N Following Application Of Compost And Manure To Dairy Pasture At The Beginning And End Of The Growing Season, Lynette Abbott, Bede Mikan, Zakaria Solaiman, Anjani Weersekara, Sanja Schwab, Ian Waite, Sasha Jenkins
Bacterial Processes Associated With Soil C And N Following Application Of Compost And Manure To Dairy Pasture At The Beginning And End Of The Growing Season, Lynette Abbott, Bede Mikan, Zakaria Solaiman, Anjani Weersekara, Sanja Schwab, Ian Waite, Sasha Jenkins
The State of Soil Science in WA
This study investigated the impact of dairy manure and compost on bacterial community composition and functional diversity in a dairy pasture in south-western Australia.
Translating Soils Information Into Better Land Planning Decisions: An Example From The Peel-Harvey Catchment Western Australia, Heather M. Percy, Andrew Del Marco, Tom Lerner, Brett Flugge
Translating Soils Information Into Better Land Planning Decisions: An Example From The Peel-Harvey Catchment Western Australia, Heather M. Percy, Andrew Del Marco, Tom Lerner, Brett Flugge
The State of Soil Science in WA
State planning policy for the Peel-Harvey coastal plain catchment requires decision makers to consider land suitability when assessing proposals for intensive agriculture including for horticulture. This information is not accessible or easily understood by land use planners. We will describe how we translated this information into a model Local Planning Policy (LPP) for the Peel-Harvey.
Validating And Extending The National Better Fertiliser Decisions For Pasture Critical Values For Phosphorus, David Rogers, David Weaver, Ron Master, Robert Summers
Validating And Extending The National Better Fertiliser Decisions For Pasture Critical Values For Phosphorus, David Rogers, David Weaver, Ron Master, Robert Summers
The State of Soil Science in WA
Viable pasture based grazing systems in south-western Australia have been made possible over much of the landscape through input of nutrients to soils which were impoverished when first cleared. Initial dramatic increases in production stimulated subsequent applications of fertilisers, particularly phosphatic fertilisers, ever since. However, excessive fertiliser application can be tied to environmental impacts including the loss of phosphorus (P) to waterways impacting on water quality.
Legacy Phosphorus – Have We Fallen Asleep At The Wheel?, Simon Clarendon, David Weaver, Robert Summers
Legacy Phosphorus – Have We Fallen Asleep At The Wheel?, Simon Clarendon, David Weaver, Robert Summers
The State of Soil Science in WA
Reducing nutrient loss from agricultural landscapes using management practices in Australia has long been advocated to improve water quality. Water quality, i.e. phosphorus (P) concentrations are commonly used to measure the effectiveness of management practices at the paddock level. However, the effectiveness of paddock scale management practices is often not reflected at a catchment scale, in part due to levels of implementation, but also due to the equilibrium effects of legacy P.
Rapid Soil Analytical Techniques For International Agricultural Research And Development, Wendy Vance, Mike Tf Wong, Anthony Ringrose-Voase, Soil And Water Science Office, Cambodian Agricultural Research And Development Institute, Department Of Agricultural Research, Myanmar
Rapid Soil Analytical Techniques For International Agricultural Research And Development, Wendy Vance, Mike Tf Wong, Anthony Ringrose-Voase, Soil And Water Science Office, Cambodian Agricultural Research And Development Institute, Department Of Agricultural Research, Myanmar
The State of Soil Science in WA
Soil analysis is used to assess natural resources and inform management to improve long-term farming profitability. Conventional techniques typically use different methods, equipment, reagents and skills to measure each soil property of interest. The consequence is that a conventional soil laboratory is expensive to set up, maintain and run. These issues result in many countries (and organisations) having to do without a well-functioning conventional soil laboratory. Developments in spectroscopic and potentiometric methods of soil analysis means that these countries need not go without reliable soil analysis.
Soil Classification Based On Spectral And Environmental Variables, Andre Carnieletto Dotto, Raphael A. Viscara Rossel, Jose Am Dematte, Rodnei Rizzo
Soil Classification Based On Spectral And Environmental Variables, Andre Carnieletto Dotto, Raphael A. Viscara Rossel, Jose Am Dematte, Rodnei Rizzo
The State of Soil Science in WA
In the last decades, the volume of soil data collection has increased significantly. Because of that it is now possible to obtain a soil classification using spectral, climate and terrain attributes. The idea was to develop a soil series system, which intends to discriminate soil types according to soil, climate and terrain variables. This new system was called Soil-Environmental Classification.
Black Soldier Fly Technology Can Convert Manure Into Valuable Fertiliser, Sasha Jenkins, Zhuoda Huang, Bede Mikan, Morten Andersen, Luke Wheat, Lynette Abbott
Black Soldier Fly Technology Can Convert Manure Into Valuable Fertiliser, Sasha Jenkins, Zhuoda Huang, Bede Mikan, Morten Andersen, Luke Wheat, Lynette Abbott
The State of Soil Science in WA
Black Soldier Fly (Hermetia illucens, BSF) farming provides an alternative low-cost waste management solution for converting agricultural waste into high quality insect meal (BSF larvae as animal feed) and a valuable fertiliser (BSF casting residue or frass).
The aim of this study was to investigate the slow-releasing effect of N after coating the BSF frass with three different fatty acids (lauric, myristic and stearic acid).
Ilime An App For Assessing The Management Of Soil Acidity In Agricultural Systems, James Fisher, Jenni Clausen, Fiona Evans, Chris Gazey
Ilime An App For Assessing The Management Of Soil Acidity In Agricultural Systems, James Fisher, Jenni Clausen, Fiona Evans, Chris Gazey
The State of Soil Science in WA
iLIme mobile app is available for download for Apple and Android devices from your preferred app store.
https://www.agric.wa.gov.au/apps/ilime
Awareness of soil acidity as a constraint to agricultural production in Western Australia has led to increased use of lime, but rates remain too low to manage existing acidic soil and ongoing acidification. To invest in lime, growers need confidence in likely economic and production responses. This paper describes the development of an acidification calculator, in app form, that was developed with input and feedback to ensure that it would meet the needs and requirements of users.
Extending The Message Of Soil Quality In The Mobile Device Era, Chris Gazey, Frances Hoyle
Extending The Message Of Soil Quality In The Mobile Device Era, Chris Gazey, Frances Hoyle
The State of Soil Science in WA
In this day and age, where everyone is time poor, making information easily and quickly available is paramount. However, with a topic as complex and as multi-dimensional as soil quality, a new approach to packaging information that is evidence-based and relevant to the local environment is required. Apple multimedia digital books provide a platform capable of delivering layers of information on mobile devices.
Simulating Australian Soil Organic Carbon Sequestration, Juhwan Lee, Raphael A. Viscarra Rossell
Simulating Australian Soil Organic Carbon Sequestration, Juhwan Lee, Raphael A. Viscarra Rossell
The State of Soil Science in WA
National initiatives to mitigate and adopt to climate change imply the need for enhancing carbon (C) sequestration in soils. Soil process models often render a C baseline hardly representative and its C sequestration potential questionable when initial soil C pools are not accounted. Here we use the soil process model Roth C to simulate site-specific soil C across 4431 sites in Australia. After matching the modelled and measured C pools at initial equilibrium, the model predicted C sequestration potentials in soils, coherent to changes among the pools, in response to soil inputs that represent soil and residue management. We show …
Gravel Is Soil Is Gravel, David Weaver, Ron Master, David Rogers
Gravel Is Soil Is Gravel, David Weaver, Ron Master, David Rogers
The State of Soil Science in WA
Around 3.8 M ha of gravelly soil contributes to crop production in south west WA. Soil analysis and glasshouse experiments routinely take place in the absence of the ≥2 mm fraction. Typical processes include sample collection, air drying, and sieving (<2 mm) prior to experimentation or analysis. The ≥2 mm fraction is discarded as it is often considered inert, acting as a soil volume diluent, and problematic for routine chemical analysis when intact because of size and representativeness. However, the literature cites that the ≥2 mm fraction may contribute positively to soil chemical, physical and biological properties.
Evolution Of Ryegrass Resistance To Glyphosate Changes Soil Microbial Diversity 14 Years Continuous Application, Zakaria Solaiman, Abul Hashem, Bede Mikan, Lynette Abbott, Paul Storer, Vivek Bhat, Andrew Whitely
Evolution Of Ryegrass Resistance To Glyphosate Changes Soil Microbial Diversity 14 Years Continuous Application, Zakaria Solaiman, Abul Hashem, Bede Mikan, Lynette Abbott, Paul Storer, Vivek Bhat, Andrew Whitely
The State of Soil Science in WA
Glyphosate is the most widely used herbicides in agriculture. Short-term impacts of glyphosate on soil microbial communities have been reported but long-term effects are rarely studied. There is concern for non-target effects on soil microbial communities with potential to negatively affect soil functions after long-term use of glyphosate. Therefore, our objective was to investigate changes in bacterial community composition following long-term glyphosate application on annual ryegrass.