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Articles 1 - 30 of 344
Full-Text Articles in Agriculture
Low-Emission Beef Production In The Southern Rangelands Of Western Australia: An Analysis Of Herd Structure And Stocking Rate Experiencing Droughts, Christophe D'Abbadie
Low-Emission Beef Production In The Southern Rangelands Of Western Australia: An Analysis Of Herd Structure And Stocking Rate Experiencing Droughts, Christophe D'Abbadie
Animal Production and Livestock Research Articles
Reconciling profitable cattle production with rangeland health and reduced emissions is a key challenge in the southern rangelands of Western Australia (WA). Stocking rate and herd structure selection are crucial decisions to achieve this balance. This study assessed the emission profiles of three contrasting herd structures (weaner production, live export, and slaughter production), and three stocking rates within a herd–carbon accounting modelling framework. The analysis considers the impact of varying drought frequencies on these cattle production systems. Herd models were developed for the semiarid southern WA rangelands. Stocking rates were set at 100%, 80% and 66% of the government recommended …
Agricultural Groundcover Update April 2024, Justin Laycock
Agricultural Groundcover Update April 2024, Justin Laycock
Natural resources published reports
- In April, over 12% (1,876,000 ha) of the arable farmland in the south-west of Western Australia had less than 50% vegetative groundcover, which is inadequate to prevent wind erosion.
- Northern grainbelt had the highest risk of wind erosion and over 26% of this farmland had inadequate groundcover, predominantly found on landscapes known for sandy soils.
- About 1.5% (238,900 ha) of arable land had a high to very high risk of wind erosion because groundcover was less than 30%.
Agricultural Groundcover Update May 2024, Justin Laycock
Agricultural Groundcover Update May 2024, Justin Laycock
Natural resources published reports
- In May, over 9% (1,410,000 ha) of the arable farmland in the south-west of Western Australia had less than 50% vegetative groundcover, which is inadequate to prevent wind erosion.
- Northern grainbelt had the highest risk of wind erosion and over 26% of this farmland had inadequate groundcover, predominantly found on landscapes known for sandy soils.
- About 1.3% (208,900 ha) of arable land had a high to very high risk of wind erosion because groundcover was less than 30%. Half of this land was in the West Midlands Ag Soil Zone.
Consultation Summary For Proposed Declared Pest Rates 2024/2025, Department Of Primary Industries And Regional Development, Western Australia
Consultation Summary For Proposed Declared Pest Rates 2024/2025, Department Of Primary Industries And Regional Development, Western Australia
Biosecurity published reports
Before determining a rate, the Minister for Agriculture and Food is required to consult with owners of the land to be rated, as described in the Biosecurity and Agriculture Management (Declared Pest Account) Regulations 2014 (the Regulations).
The annual process for consultation enables the Department of Primary Industries and Regional Development (DPIRD) to gauge landholder perception on the proposed Declared Pest Rate (DPR) in accordance with the Regulations.
Agricultural Groundcover Update March 2024, Justin Laycock
Agricultural Groundcover Update March 2024, Justin Laycock
Natural resources published reports
- In March, over 10% (1,577,000 ha) of the arable farmland in the south-west of Western Australia had less than 50% vegetative groundcover, which is inadequate to prevent wind erosion.
- The northern grainbelt had the highest risk of wind erosion and over 20% of this farmland had inadequate groundcover.
- About 1.3% (191,000 ha) of arable land had a high to very high risk of wind erosion because groundcover was less than 30%.
Agricultural Groundcover Update February 2024, Justin Laycock
Agricultural Groundcover Update February 2024, Justin Laycock
Natural resources published reports
- About 92% of the grainbelt had adequate (more than 50%) vegetative groundcover to prevent wind erosion in February 2024.
- Nearly 8% of the grainbelt (1,193,400 ha) had less than 50% groundcover, which is inadequate to prevent wind erosion.
- The northern grainbelt had the highest risk of wind erosion and 16.5% of this farmland had inadequate groundcover.
- Less than 0.7% of the grainbelt had a high to very high risk of wind erosion because groundcover was less than 30%.
Procedures For Rangeland Condition Assessment In The Pilbara And Southern Rangelands 2022, Department Of Primary Industries And Regional Development
Procedures For Rangeland Condition Assessment In The Pilbara And Southern Rangelands 2022, Department Of Primary Industries And Regional Development
Natural resources published reports
To define the procedures used in 2022 by the Department of Primary Industries and Regional Development (DPIRD) to complete rangeland condition assessment (RCA) in the Pilbara and southern rangelands region which has predominantly shrub-based pastures. For the rest of the pastoral estate, DPIRD uses the Procedures for RCA in the Kimberley which has grass pastures.
RCA is the process DPIRD uses to make systematic, lease level assessment of rangeland. Rangeland condition considers both the condition of pastures (as defined in the Pasture condition and management guide for the Pilbara rangelands or Southern rangelands pasture condition and management guides) and soils …
Procedures For Rangeland Condition Assessment In The Kimberley 2022, Department Of Primary Industries And Regional Development
Procedures For Rangeland Condition Assessment In The Kimberley 2022, Department Of Primary Industries And Regional Development
Natural resources published reports
This report defines the procedures used in 2022 by the Department of Primary Industries and Regional Development (DPIRD) to complete rangeland condition assessment (RCA) in the Kimberley region which has grass-based pastures. For the rest of the pastoral estate, DPIRD uses the Procedures for RCA in the Pilbara and southern rangelands which have predominantly shrub pastures.
RCA is the process DPIRD uses to make systematic, lease-level assessment of rangeland. Rangeland condition considers both the condition of pastures (as defined in the Pasture condition guide for the Kimberley, Ryan et al. 2013) and soils as determined by erosion, using the …
Agricultural Groundcover Update January 2024, Justin Laycock
Agricultural Groundcover Update January 2024, Justin Laycock
Natural resources published reports
Summary
- About 94% of the grainbelt had adequate (more than 50%) vegetative groundcover to prevent wind erosion in January 2024.
- In the northern half of the grainbelt, a larger-than-average area has 51–60% groundcover, which is expected to decrease to below 50% over the coming months.
- Just under 6% of the grainbelt (855,000 ha) had less than 50% groundcover, which is inadequate to prevent wind erosion. West Midlands Ag Soil Zone had the highest risk of wind erosion and 14.5% of this farmland had inadequate groundcover.
- Less than 0.5% of the grainbelt had a high to very high risk of wind …
Agricultural Groundcover Update December 2023, Justin Laycock
Agricultural Groundcover Update December 2023, Justin Laycock
Natural resources published reports
Summary
- About 96% of the grainbelt had adequate vegetative groundcover (more than 50%) to prevent wind erosion in December 2023.
- In the northern half of the grainbelt, a larger-than-average area has 51–60% groundcover, which is expected to decrease to below 50% over the summer.
- Just under 4% of the grainbelt (553,000 ha) had less than 50% groundcover, which is inadequate to prevent wind erosion. West Midlands Ag Soil Zone had the highest risk of wind erosion and 11.4% of this farmland had inadequate groundcover.
- Less than 0.5% of the grainbelt had a high to very high risk of wind erosion …
Costs Of Wind Erosion In The Northern Agricultural Region, Anne Bennett
Costs Of Wind Erosion In The Northern Agricultural Region, Anne Bennett
Natural resources published reports
Summary
- To date, the Department of Primary Industries and Regional Development’s (DPIRD) estimated opportunity cost of wind erosion for Western Australia’s (WA) agricultural region has only included the costs of forgone production income and therefore underestimates the broader costs of wind erosion events.
- This underestimation of costs was the impetus to create a case study to give an indication of the magnitude of the costs of wind erosion from agricultural land.
- Farmers in the Northern Agricultural Region (NAR) were contacted to seek information about the on-farm costs of wind erosion events that occurred in 2020. Seventeen farmers responded to the …
Agricultural Groundcover Update November 2023, Justin Laycock
Agricultural Groundcover Update November 2023, Justin Laycock
Natural resources published reports
Summary
- About 98% of the grainbelt had adequate (more than 50%) vegetative groundcover to prevent wind erosion in November 2023. This amount of groundcover is normal for the middle of harvest.
- In the northern half of the grainbelt, a larger-than-average area had 51–60% groundcover, which is expected to decrease to below 50% over summer.
- Just over 2% of the grainbelt (324,000 ha) had less than 50% groundcover, which is inadequate to prevent wind erosion. Mullewa to Morawa Ag Soil Zone had the highest risk of wind erosion and 9.7% of this farmland had inadequate groundcover.
- Less than 0.5% of the …
Status Of The Western Australian Pastoral Rangelands 2023: Total Vegetative Cover And Cover Risk, Department Of Primary Industries And Regional Development
Status Of The Western Australian Pastoral Rangelands 2023: Total Vegetative Cover And Cover Risk, Department Of Primary Industries And Regional Development
Natural resources published reports
The Department of Primary Industries and Regional Development (DPIRD) monitors and reports on the vegetation condition of pastoral rangelands in Western Australia. This 2023 short report uses remotely sensed total cover data available to the end of October 2023, rainfall data to the end of November 2023 and Stock Return data reported in 2022 (the most recent available) to determine cover risk. Cover risk at the land conservation district (LCD) level is an indicator of the likelihood of total cover declining to, or remaining at, low or very low levels. Total cover and cover risk may not be indicative of …
Transforming Agriculture In The Pilbara: Newman Managed Aquifer Recharge (Mar) Feasibility Assessment, Michael J. Donn, Joanne L. Vanderzalm, Olga V. Barron
Transforming Agriculture In The Pilbara: Newman Managed Aquifer Recharge (Mar) Feasibility Assessment, Michael J. Donn, Joanne L. Vanderzalm, Olga V. Barron
Natural resources commissioned reports
In the Newman region, DPIRD commissioned an assessment of the potential for managed aquifer recharge (MAR) near Newman using surplus water resulting from mine dewatering as the water supply for irrigated agriculture. The objectives of the MAR assessment were to:
- identify focus area for MAR feasibility assessment within the initial larger area of interest for MAR
- assess the viability of MAR with mine dewater near Newman to support development of irrigated agriculture, in keeping with national and state MAR guidelines
- identify key risks associated with MAR with mine dewater for irrigation supply, and identify knowledge/investigation required to adequately assess risks …
Groundwater System Characterisation: Fortescue Alluvial Fan, Michael J. Donn, Olga V. Barron, Axel Suckow, Chris Turnadge, John A. Simons, Robert J. Paul, Christopher Schelfhout Dr
Groundwater System Characterisation: Fortescue Alluvial Fan, Michael J. Donn, Olga V. Barron, Axel Suckow, Chris Turnadge, John A. Simons, Robert J. Paul, Christopher Schelfhout Dr
Natural resources commissioned reports
This report focuses on groundwater system characterisation in the region north of Newman, based on analysis of pre-existing data and data newly acquired during project activities. Groundwater system characterisation was an important research component supporting the assessment of managed aquifer recharge opportunities, using mine dewatering surplus generated (due to mining below the watertable) at large BHP Billiton Iron Ore operations in the eastern Pilbara mining zone, and aiming to support irrigated agriculture. The assessment area is located north of Ethel Gorge and covers the Upper Fortescue River floodplain and surroundings. The project added much knowledge to this largely ‘data-poor’ region, …
Agricultural Groundcover Update October 2023, Justin Laycock
Agricultural Groundcover Update October 2023, Justin Laycock
Natural resources published reports
Summary
- About 98% of the grainbelt had adequate vegetative groundcover (more than 50%) to prevent wind erosion in October 2023. This amount of groundcover is normal at the end of spring and pre-harvest in most areas.
- There was a larger than average area with 51–60% groundcover, and groundcover in these areas is expected to reduce over summer to below 50%.
- About 2% of the grainbelt (293,000 ha) had less than 50% groundcover, which is inadequate to prevent wind erosion. Mullewa to Morawa Ag Soil Zone had the highest risk of wind erosion and 8% of this farmland had inadequate groundcover. …
Building The Soil Carbon Sponge At Murray Wells Farm, Tambellup, Western Australia, Wendy Bradshaw
Building The Soil Carbon Sponge At Murray Wells Farm, Tambellup, Western Australia, Wendy Bradshaw
Natural resources published reports
Peter and Wendy Bradshaw farmed at Murray Wells Farm about 25 km west of Tambellup for around 46 years until they sold and retired in 2022. They produced barley, oats, merino and prime lambs on an annual rainfall of 450 mm over 1,000 arable hectares. The farm was on a moderately undulating landscape with a mix of soils including sandy duplex, well-drained sand over gravel over clay, shallow sandy or loamy gravel over cemented laterite and red to brown loamy soils.Their farming philosophy was to view agriculture as an ecological enterprise that included them as part of the ecosystem, and …
Managing Water Quality To Enable Future Irrigation Development In The Kimberley Region: Three-Dimensional Hydrodynamic Modelling To Evaluate The Effect Of Farm Chemicals On The Lower Pools Of The Keep River, J Romero
Natural resources commissioned reports
The National Water Grid Authority awarded the Department of Primary Industries and Regional Development (DPIRD) a project entitled ‘Managing Water Quality to Enable Future Irrigation Development in the Kimberley Region’.
The purpose of the project is to review the current and future risk profile of agrichemicals (pesticides) in the Keep River catchment (Ord - East Kimberley) in the context of irrigation development across the last decade and proposed in the medium term. The results of the review were to define prospective mitigation and risk management practices to be developed in consultation with the Goomig and Knox Plains Independent Review Group …
Review Of Toxicity Of Agricultural Chemicals And Implications For Aquatic Fauna Of The Keep River, Samanatha Reynolds, David Morgan
Review Of Toxicity Of Agricultural Chemicals And Implications For Aquatic Fauna Of The Keep River, Samanatha Reynolds, David Morgan
Natural resources commissioned reports
This report was compiled for the Western Australian Department of Primary Industries and Regional Development (DPIRD) as part of the National Water Grid Authority (NWGA) project entitled “Managing water quality to enable future irrigation development in the Kimberley Region, WA”. The purpose of this report is to review the toxicity of farm chemicals (herbicides and insecticides) used by farm operators in the Keep River catchment and their potential impacts on the aquatic species in the river, in particular those species that are listed under the Environment Protection and Biodiversity Conservation Act 1999. It is designed to complement the report entitled …
Report On And Recommendations Arising From The Visit Of Dr Michael Warne (University Of Queensland) And Robert Sluggett To Kununurra, Michael Warne Dr, Rob Sluggett
Report On And Recommendations Arising From The Visit Of Dr Michael Warne (University Of Queensland) And Robert Sluggett To Kununurra, Michael Warne Dr, Rob Sluggett
Natural resources commissioned reports
Dr Michael Warne of the Reef Catchments Science Partnership and Robert Sluggett of Farmacist Pty Ltd were invited by Richard George of Department of Primary Industries and Regional Development (DPIRD) to visit Kununurra, Western Australia.
The project was financially supported by the National Water Grid Authority project “Managing water quality to enable future irrigation development in the Kimberley Region”. The aim of the visit was for Dr Warne and Rob Sluggett to engage with farmers, key stakeholders and staff from DPIRD in order to understand the agriculture and water quality in the Ord and Keep river region; and to share …
Regenerative Agriculture - A Literature Review On The Practices And Mechanisms Used To Improve Soil Health, Ravjit Khangura, David Ferris, Cameron Wagg, Jamie Bowyer
Regenerative Agriculture - A Literature Review On The Practices And Mechanisms Used To Improve Soil Health, Ravjit Khangura, David Ferris, Cameron Wagg, Jamie Bowyer
Natural Resources Research Articles
Conventional farming practices can lead to soil degradation and a decline in productivity. Regenerative agriculture (RA) is purported by advocates as a solution to these issues that focuses on soil health and carbon sequestration. The fundamental principles of RA are to keep the soil covered, minimise soil disturbance, preserve living roots in the soil year round, increase species diversity, integrate livestock, and limit or eliminate the use of synthetic compounds (such as herbicides and fertilisers). The overall objectives are to rejuvenate the soil and land and provide environmental, economic, and social benefits to the wider community. Despite the purported benefits …
Building The Soil And The Community At Hollands Track Farm, Newdegate, Western Australia, Jamie Bowyer, Nick Kelly
Building The Soil And The Community At Hollands Track Farm, Newdegate, Western Australia, Jamie Bowyer, Nick Kelly
Natural resources published reports
The Kelly family have been farming at Hollands Track Farm, about 18 km south-west of Newdegate, since 1965. They currently produce grains, beef, eggs and sheep. Long-term annual average rainfall is 350 mm. The Kellys were early adopters – in the 1990s – of the no-till farming system, which is now widely used in Western Australia. Around 2002 they sold the last of their sheep and moved to a continuous cropping program with increased fertiliser and chemical use. They were very good at this system, and it served them well. They really enjoy the challenge of growing good crops. Over …
State And Transition Models For Tussock Grasslands And Woodlands Of The Kimberley: Final Project Report, Anna E. Richards, Brett Abbott, Robert Sudmeyer, Matthew Fletcher, Kath Ryan, Suzanne Prober, Philip Thomas, Pouria Ramzi, Jodie Hayward, Chris Hetherington, Karyn Reeves, Wayne J. Fletcher
State And Transition Models For Tussock Grasslands And Woodlands Of The Kimberley: Final Project Report, Anna E. Richards, Brett Abbott, Robert Sudmeyer, Matthew Fletcher, Kath Ryan, Suzanne Prober, Philip Thomas, Pouria Ramzi, Jodie Hayward, Chris Hetherington, Karyn Reeves, Wayne J. Fletcher
Natural resources commissioned reports
The Kimberley region in north-west Western Australia is covered by extensive savanna woodlands and tussock grasslands. Approximately half the region is under pastoral leases predominately used for beef production. The Western Australian (WA) government Department of Primary Industries and Regional Development (DPIRD) undertakes lease assessment and inspection to ensure the maintenance of pastoral land condition (maintenance of perennial grass cover that supports livestock grazing and soil condition). This presents several challenges around defining land condition and practices that support and improve long-term ecological sustainability of pastoral lands. The objective of this project was to develop state and transition models (S&TMs) …
Status Of The Western Australian Pastoral Rangelands 2022: Total Vegetative Cover And Cover Risk, Department Of Primary Industries And Regional Development
Status Of The Western Australian Pastoral Rangelands 2022: Total Vegetative Cover And Cover Risk, Department Of Primary Industries And Regional Development
Natural resources published reports
The Department of Primary Industries and Regional Development monitors and reports on the vegetation condition of pastoral rangelands in Western Australia. This 2022 short report uses remotely sensed total vegetative cover data available to the end of October 2022, rainfall data to November 2022 and Stock Return data reported in 2021 (the most recent available) to determine cover risk. Cover risk at the land conservation district (LCD) level is an indicator of the likelihood of total cover declining to, or remaining at, Low or Very low levels. Total cover and cover risk may not be indicative of vegetation condition and …
Using Landsat Satellite Imagery To Estimate Groundcover In The Grainbelt Of Western Australia, Justin Laycock, Nick Middleton, Karen Holmes
Using Landsat Satellite Imagery To Estimate Groundcover In The Grainbelt Of Western Australia, Justin Laycock, Nick Middleton, Karen Holmes
Resource management technical reports
Maintaining vegetative groundcover is an important component of sustainable agricultural systems and plays a critical function for soil and land conservation in Western Australia’s (WA) grainbelt (the south-west cropping region). This report describes how satellite imagery can be used to quantitatively and objectively estimate total vegetative groundcover, both in near real time and historically across large areas. We used the Landsat seasonal fractional groundcover products developed by the Joint Remote Sensing Research Program from the extensive archive of Landsat imagery. These products provide an estimate of the percentage of green vegetation, non-green vegetation and bare soil for each 30 m …
Groundwater Modelling Of The Newman Area For Managed Aquifer Recharge Assessment, Wolfgang Schmid, Rodrigo Rojas, Michael J. Donn, Christopher Schelfhout Dr, Mathias Raiber, Olga Barron
Groundwater Modelling Of The Newman Area For Managed Aquifer Recharge Assessment, Wolfgang Schmid, Rodrigo Rojas, Michael J. Donn, Christopher Schelfhout Dr, Mathias Raiber, Olga Barron
Natural resources commissioned reports
This report contributes to the Transforming Agriculture in the Pilbara (TAP) initiative that has been developed to undertake the detailed studies in the Pilbara to bring suitable medium to large scale irrigation land to market for private investment. The research objective was to explore opportunities for irrigated agriculture north of Newman (Eastern Pilbara), deploying managed aquifer recharge (MAR) to secure water for irrigation. MAR source water identified was from mine dewatering surplus, generated from the large BHP Iron Ore operation in the Newman region. The objectives of this report were to:
- conceptualise the groundwater system and associated processes in the …
Wagin Townsite Borefield: Review Of Aquifer Performance, Rockwater
Wagin Townsite Borefield: Review Of Aquifer Performance, Rockwater
Natural resources commissioned reports
The Wagin Borefield was established by the Department of Agriculture and Food, Western Australia in 2000-2007 to control groundwater levels in the town that had risen to critical levels as a result of increased recharge and runoff following the clearing of native vegetation for urban development and agriculture. Similar investigations were conducted as part of the Rural Towns Program and Rural Towns-Liquid Assets projects in 41 other wheatbelt towns, but none, except perhaps from Merredin, have been as comprehensively implemented, operated and monitored as Wagin.
The Wagin Borefield comprises 8 production bores, of which only 3 have been operated. To …
Investigations Of The Potential For Irrigated Agriculture On The Bonaparte Plains: Hydrogeology, Aquifer Properties And Groundwater Chemistry, Don Bennett, Paul Raper, Robert Paul, Tim Pope, Richard J. George Dr
Investigations Of The Potential For Irrigated Agriculture On The Bonaparte Plains: Hydrogeology, Aquifer Properties And Groundwater Chemistry, Don Bennett, Paul Raper, Robert Paul, Tim Pope, Richard J. George Dr
Resource management technical reports
‘Cockatoo Sands’ is a common name for the Cockatoo Sands family of soils (comprising red to yellowish-red sands, sandy earths, and loamy earths) that have formed from quartz sandstone colluviums in relatively isolated patches throughout the East Kimberley region of Western Australia and the Northern Territory. Cockatoo Sands are recognised as potentially suitable for irrigated agriculture because they are generally well drained and not subject to waterlogging or inundation. These characteristics allow them to be cultivated and prepared for planting various crops during the wet and dry seasons of northern Australia.
Expanding agricultural production onto the Cockatoo Sands around Kununurra …
Land And Water Resources For Irrigated Agriculture In The Pilbara, Paul Galloway, John A. Simons, Karen Holmes, Dennis Van Gool
Land And Water Resources For Irrigated Agriculture In The Pilbara, Paul Galloway, John A. Simons, Karen Holmes, Dennis Van Gool
Resource management technical reports
This report documents the procedures used to identify suitable locations for irrigation development in the Pilbara region. It is the first study to investigate the potential for irrigated agriculture across the Pilbara. We used a desktop analysis to ascertain water availability and spatial data modelling to determine the potential of the land and soil resource to support irrigated agriculture. This study was part of the Pilbara Hinterland Agricultural Development Initiative (PHADI).
We used existing rangeland land inventory information augmented with digital spatial environmental data, in a process known as map disaggregation, to create soil and landform maps that had a …
Carnarvon Floodplain Management - Working Group Report, Department Of Primary Industries And Regional Development, Western Australia, Department Of Water And Environmental Regulation, Western Australia, Canarvon Growers Association, Department Of Fire And Emergency Services, Western Australia, Shire Of Canarvon, Western Australia
Carnarvon Floodplain Management - Working Group Report, Department Of Primary Industries And Regional Development, Western Australia, Department Of Water And Environmental Regulation, Western Australia, Canarvon Growers Association, Department Of Fire And Emergency Services, Western Australia, Shire Of Canarvon, Western Australia
Horticulture research reports
Periodic flooding of the lower Gascoyne River floodplain at Carnarvon is a natural event. The flooding results from cyclonic and thunderstorm activity in the catchment, with the risk period generally from November to May, associated with the wet season in the north of WA. The Carnarvon horticultural area has suffered considerable damage following flooding of the Gascoyne River in 1960,1961, 1974, 1980, 1995, 2000, 2009, 2010/11 and 2021.
The WA Government has undertaken restoration programs to replace soil lost for most of these major flooding events. Apart from the soil loss and risks of permanent damage to the natural resource, …