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soil amendment

Catalogue: Ground Cover
[Photo (left) by Evan Collis: Ian Stanley is trialling biochar made from wheat straw to improve the condition of his sandy soils.].. Working with Professor Syd Shea of Notre Dame University and independent Melbourne engineer and businessman Peter Burgess, Mr Stanley has been trialling biochar - a fine-grained charcoal high in organic carbon, thought to improve soil fertility - for the past four years... "We have a no-till operation and apart from its small value as a ground cover, wheat straw has no value, so biochar made from this could provide farmers with another source of revenue," Mr Stanley says...
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Catalogue: GRDC Updates
Potential yield was estimated by a modified French and Schultz approach using monthly rainfall for each site and season... Most sites showed no yield increase in the season of application... A range of grain yield responses to gypsum were measured from a 13 percent decrease to over 100 per cent increase...
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Catalogue: GRDC Factsheets
Before biochar can be widely adopted in agriculture, better understanding is needed of its properties and how it interacts - both positively and negatively - with the soil... Gas chambers are used to measure greenhouse gas emissions from a soil amended with biochar in Western Australia... Applications of biochar to soil have demonstrated improvements in the physical structure of the soil by: increasing water-holding capacity (in sandy soils); reducing the tensile strength of hardsetting soil; altering the soil thermal properties; and improving physical conditions for increased earthworm populations...
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Catalogue: GRDC Factsheets
Before biochar can be widely adopted in agriculture, better understanding is needed of its properties and how it interacts - both positively and negatively - with the soil... Gas chambers are used to measure greenhouse gas emissions from a soil amended with biochar in Western Australia... Applications of biochar to soil have demonstrated improvements in the physical structure of the soil by: increasing water-holding capacity (in sandy soils); reducing the tensile strength of hardsetting soil; altering the soil thermal properties; and improving physical conditions for increased earthworm populations...
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Catalogue: GRDC Factsheets
Before biochar can be widely adopted in agriculture, better understanding is needed of its properties and how it interacts - both positively and negatively - with the soil... Gas chambers are used to measure greenhouse gas emissions from a soil amended with biochar in Western Australia... Applications of biochar to soil have demonstrated improvements in the physical structure of the soil by: increasing water-holding capacity (in sandy soils); reducing the tensile strength of hardsetting soil; altering the soil thermal properties; and improving physical conditions for increased earthworm populations...
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Catalogue: Ground Cover
Image of a soil pit showing lime injection.. Soil pit showing where lime (stained purple) has been injected into the soil... The trial was established in 2001 at South Bodallin in the eastern WA wheatbelt when limesand was injected to a depth of 25 to 30cm, using air to blow the lime down behind a set of deep-ripping tynes...
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Catalogue: Ground Cover
A pit face showing the effects of soil redistribution after tillage in a GRDC-funded project at Badgingarra... The imaging is providing more information about how different tillage practices mix the soil through their working depth... "We have a general idea about how inverting the soil will affect water repellence, weed establishment, the seedbed, subsoil compaction and crop emergence," he says...
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Catalogue: Ground Cover
A pit face showing the effects of soil redistribution after tillage in a GRDC-funded project at Badgingarra... The imaging is providing more information about how different tillage practices mix the soil through their working depth... "We have a general idea about how inverting the soil will affect water repellence, weed establishment, the seedbed, subsoil compaction and crop emergence," he says...
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Catalogue: GRDC Final Reports
Through targeted research and review, the project was able to deliver key management strategies to prevent, ameliorate and manage subsoil constraints and demonstrate the long-term benefits of these on productivity and profitability... The project has clearly demonstrated the long-term benefits from ameliorating induced constraints such as acidity and compaction, with cereal yield benefits commonly of the order of 6-40%... The project has demonstrated the long-term benefits that accrue from maintaining soils in good condition, providing farming system and sustainability benefits...
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Catalogue: GRDC Final Reports
From an environmental perspective, this project has provided - and will continue to provide - benefits to improving the physical, chemical and biological components of the soil resource... A number of the field trials conducted in this project were implemented using new technology to address subsoil acidity... The project has clearly shown that subsoil acidity and compaction are widespread within the region and trials conducted have demonstrated the range of responses to ameliorating these constraints...
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