Stephen Davies

Affiliations

(2) agVivo (1) CSIRO (1) DAFWA (57) DPIRD (4) DPIRD WA (2)
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62 total results found Matching the current search filters and located within the visible map area.

24 results have export data available
60 trials are CC BY 4.0
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Aims:

To compare and showcase the broad range of strategic tillage options for amelioration of yellow sandplain soils and to assess their effectiveness at overcoming a range of soil constraints including non-wetting soil surface, compaction and subsoil acidity and increasing crop productivity.

Crop type: Wheat 3 trials Soil Soil Preparation
Goomalling, WA
Research organisaton
Funding source

Aims:

  • To quantify the impact of nitrogen and potassium fertiliser on wheat yield and quality, after mouldboard ploughing non-wetting soils in the Geraldton Port Zone.
  • To determine the most effective way to apply nutrients (granular, banded, top dressed or liquid) on non-wetting soils after amelioration, in the Geraldton Port Zone.read more

Crop type: Wheat 1 trial Soil amelioration
, WA
Research organisaton
Funding source

Aims:

  • To determine the impact of N and K supply on yield and quality, on ameliorated non-wetting soils in the Geraldton Port Zone.
  • To determine the most effective way to apply nutrients (granular, banded, top dressed or liquid) on non-wetting soils after amelioration, in the Geraldton Port Zone.
     

Crop type: Canola 1 trial Soil amelioration
Eneabba, WA
Research organisaton
Funding source

Aims:

To compare and showcase a range of strategic tillage options for amelioration of shallow sandy duplex soils (Sand over clay/gravel) and to assess their effectiveness at overcoming a range of soil constraints including topsoil water repellence and Compaction and increasing crop productivity over a period of 4-5 years.

Crop type: Barley 1 trial Soil Compaction Soil amelioration Type
York, WA
Research organisaton
Funding source

Aims:

To compare different clay spreading and tillage methods for the amelioration of water repellent gravel soils.

Crop type: Lupins 1 trial Soil amelioration Application
Badgingarra, WA
Source Data Unavailable
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Aims:

To compare different clay spreading and tillage methods for the amelioration of water repellent gravel soils.

Crop type: Wheat 1 trial Soil amelioration
Moora, WA
Source Data Unavailable
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Funding source

Aims:

To compare different clay spreading and tillage methods for the amelioration of water repellent soils.

Crop type: Barley 1 trial Soil amelioration
Dandaragan, WA
Source Data Unavailable
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Aims:

Assessing practical soil management options for overcoming severe water repellence on sandy gravels in the West Midlands.

Crop type: Wheat 2 trials Soil amelioration
Badgingarra, WA Dandaragan, WA
Source Data Unavailable
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Funding source

Aims:

To quantify the main factors limiting grain yield in a water-repellent sandy gravel soil.

Crop type: Wheat 1 trial Crop
Badgingarra, WA
Source Data Unavailable
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Aims:

To assess amelioration options for water repellent sandplain soils.

Crop type: Wheat 2 trials Soil Preparation
Badgingarra, WA
Source Data Unavailable
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Aims:

To identify suitable options for managing soil water repellence on sandy gravels.

Crop type: Wheat 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
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Aims:

Detailed measurement of soil properties and plant productivity over time following amelioration with one-off deep tillage.

Crop type: Wheat 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
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Funding sources

Aims:

To compare and assess the effectiveness of one-off tillage treatments on soil water repellence, water infiltration, crop establishment and productivity on a water repellent gravel.

Crop type: Canola 2 trials Soil Preparation
Dandaragan, WA Moora, WA
Source Data Unavailable
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Funding sources

Aims:

To provide a demonstration site to observe the effects of mouldboard ploughing vs. no cultivation on non-wetting soils and crop growth and yield.

Crop type: Wheat 1 trial Soil Preparation Soil amelioration Type Soil amelioration Rate
Wickepin, WA
Research organisaton
Funding source

Aims:

  • To determine if the addition of lime and its method of incorporation (none/control, MBP or deep rip) has an effect on the soil pH profile and crop productivity.
  • To compare the impact of mouldboard ploughing and deep ripping on topsoil water repellence compared to an untreated control.

Crop type: Lupins 1 trial Soil Preparation Soil amelioration Type Soil amelioration Rate
Wickepin, WA
Research organisaton
Funding source

Aims:

To assess amelioration options for water repellent sandplain soils.

Crop type: Lupins 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
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Funding source

Aims:

  • To assess the impact of sowing times, seeding rate and wetting agents on wheat establishment and productivitey on water repellent soil and determine whether there is a positive interaction between the agronomic options tested. 
  • This trial was conducted at four locations acros the wheatbelt. The results are only for the Binnu … read more

Crop type: Wheat 4 trials Sowing Rate
Binnu, WA Cranbrook, WA Warradarge, WA Yealering, WA
Research organisatons
Funding source

Aims:

To provide an overview and improve understanding of the range of tillage implements available to growers to incorporate lime, their respective costs and benefits and to assess novel options.

Crop type: No crop specified 1 trial Soil amelioration Type
Dandaragan, WA
Source Data Unavailable
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Funding source

Aims:

To further investigate rotary spading and other soil amelioration techniques on the yellow sand-plain soils west of Moora.

Crop type: Wheat 1 trial Soil amelioration
Dandaragan, WA
Source Data Unavailable
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Funding source

Aims:

To improve understanding of the range of tillage implements and techniques available to incorporate lime into acidic soils, their respective costs and benefits.

Crop type: Wheat,Canola,Lupins,Barley 96 trials Soil amelioration
Badgingarra, WA Dandaragan, WA Mingenew, WA
Source Data Unavailable
Research organisatons

Aims:

To determine how lime, nutrients or other amendments are distributed through the soil after applicaiton with different mixing methods.

Crop type: No crop specified 1 trial Soil amelioration
Dandaragan, WA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

To systematically assess the impact of sowing time, seeding rate and wetting agents on wheat establishment and productivity across a range of environments on water repellent soil and determine whether there are interactions between the agronomic options tested.

Crop type: Wheat 4 trials Sowing Rate Sowing Timing
Binnu, WA Cranbrook, WA Warradarge, WA Yealering, WA
Source Data Unavailable
Research organisatons
Funding source

Aims:

To systematically assess the impact of sowing time, seeding rate and wetting agents on wheat establishment and productivity across a range of environments on water repellent soil and determine whether there are interactions between the agronomic options tested.

Crop type: Wheat 4 trials Soil Type Soil amelioration Type Sowing Rate
Binnu, WA Cranbrook, WA Warradarge, WA Yealering, WA
Research organisaton
Funding source

Aims:

To assess the impact of the rate of application of clay-rich subsoil to water repellent sand on grain yield and the interaction with incorporation method.

Crop type: Wheat 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
Research organisatons
Funding source

Aims:

To determine if there are any benefits to be gained from mouldboard ploughing a yellow sandplain soil

Crop type: Wheat 1 trial Soil Preparation Soil amelioration Type
West Buntine, WA
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Funding source

Aims:

To assess amelioration of subsoil acidity using a range of tillage methods for incorporating surface applied lime into acidic subsoils and the impacts of tillage and lime on crop productivity.

Crop type: Barley 1 trial Soil amelioration
Regans Ford, WA
Source Data Unavailable
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Funding source

Aims:

Assess the value of several traits that aim to improve the acid-soil tolerance of wheat under field conditions.

Crop type: Wheat 1 trial Soil amelioration
Regans Ford, WA
Source Data Unavailable
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Funding source

Aims:

To assess the impact of mouldboard ploughing and clay spreading on soil water repellence and grain yield.

Crop type: Barley 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
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Funding source

Aims:

To assess amelioration options for water repellent soil and to determine whether a one-way plough can be used to ameliorate non-wetting sand for much lower cost than mouldboard ploughing or rotary spading.

Crop type: Wheat 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
Research organisatons
Funding source

Aims:

To assess water repellent soil amelioration options and to determine whether a one-way plough can be used to ameliorate non-wetting sand for much lower cost than mouldboard ploughing or rotary spading.

Crop type: Lupins 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
Research organisatons
Funding source

Aims:

To evaluate a range of seeding modifications or additions with the aim of improving crop establishment and yield on water repellent sandplain soil.

Crop type: Wheat 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
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Funding source

Aims:

To compare the effects of mouldboard ploughing, spading and deep ripping on yellow non-wetting sand.

Crop type: Wheat 1 trial Soil amelioration Type
Marchagee, WA
Research organisaton
Funding source

Aims:

To examine whether deep cultivation by spading can be used to manage water repellence and subsoil acidity on sandplain soil.

Crop type: Wheat 1 trial Soil amelioration Type
East Marchagee, WA
Research organisaton
Funding source

Aims:

To investigate rotary spading and other soil amelioration techniques on yellow sandplain soils west of Moora.

Crop type: Wheat 1 trial Soil amelioration
Dandaragan, WA
Source Data Unavailable
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Funding source

Aims:

To determine how soil inversion and banded surfactants change the availability of soil nutrients.

Crop type: Barley 2 trials Soil amelioration
Badgingarra, WA
Source Data Unavailable
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Funding source

Aims:

To evaluate banded wetting agent (SACOA ‘Irrigator’) for crop establishment and yield on non-wetting soils in the West Midlands.

Badgingarra, WA Warradarge, WA
Source Data Unavailable
Research organisatons
Funding source

Aims:

To evaluate the effects of mouldboard ploughing a soil with and without TM21.

Crop type: Wheat 1 trial Soil Preparation Soil amelioration Type
West Buntine, WA
Research organisaton

Aims:

To assess the whole farm implementation of water repellence management strategies.

Crop type: Barley 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
Research organisatons
Funding source

Aims:

To assess what clay rich subsoil application rates are required for overcoming soil water repellence and how this interacts with method of incorporation.

Crop type: Wheat 4 trials Soil amelioration
Badgingarra, WA Balla, WA Binnu, WA Bolgart, WA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

  • To determine if using a rotary spader on a ‘good’ sandy loam with minimal repellence and good pH profile can damage soil.
  • To compare the impacts of spading and deep ripping.

Crop type: Wheat 1 trial Soil Preparation Soil amelioration Type
East Coorow, WA
Research organisaton
Funding source

Aims:

To examine whether deep cultivation by spading can be used to manage water repellence and subsoil acidity on sandplain soil.

Crop type: Wheat 1 trial Soil Preparation Soil amelioration Type
East Marchagee, WA
Research organisaton
Funding source

Aims:

To measure the impact on crop productivity of combinations of lime and mouldboard ploughing on acidic deep yellow sand.

Crop type: Wheat 3 trials Soil amelioration
West Moora, WA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

To determine how mouldboard ploughing (soil inversion), rotary spading and banded wetting agent affect the availability of soil nutrients.

Crop type: Wheat 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

To assess the impact of different seeding systems on crop establishment in water repellent soil.

Crop type: Wheat 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

To assess water repellent soil amelioration options and to determine whether a one-way plough can be used to ameliorate non-wetting sand for much lower cost than mouldboard ploughing or rotary spading.

Crop type: Wheat 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

To look at the following soil amelioration treatments on water repellent pale sand:

  • no amendment (nil);
  • 3t/ha limesand; and
  • 150 t/ha clay rich (31% clay) subsoil spread with a multi-spreader
Crop type: Maize 1 trial Soil amelioration
Badgingarra, WA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

To assess the second year impact of mouldboard ploughing on wetting up of water repellent soil and on lupin establishment and yield.

 

Crop type: Lupins 1 trial Soil Preparation Sowing
Badgingarra, WA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

To assess the impact of rotary spading non-wetting sandplain soil on soil properties, crop growth and productivity.

Crop type: Wheat 1 trial Soil Preparation Soil amelioration Type
Marchagee, WA
Research organisatons
Funding sources

Aims:

This trial seeks to test the Yield Prophet tool to determine its relevance and usefulness to growers of the West Midlands region in determining most efficient and effective nitrogen strategy.

Crop type: Wheat 1 trial Fertiliser
Badgingarra, WA
Source Data Unavailable
Research organisatons
Funding sources

Aims:

To assess the interaction between clay rate and incorporation methods to overcome soil water repellence and improve crop establishment and productivity.

Crop type: Wheat 1 trial Soil amelioration Rate
Bolgart, WA
Source Data Unavailable
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Funding source