Securing soil and water using carbon. This project will ascertain the role of sequestered carbon in positively impacting on chemical, physical and biological and associated feedback mechanisms in order to increase the capacity of soil to store water and carbon. This information will allow us to maximise our ability to manage and rehabilitate Australia's increasing degraded soil resource.
Vineyard soil health and microbial biodiversity under different cover crop and floor management practices. This project will examine vineyard ?soil health? by monitoring the populations of soil microorganisms under different vineyard cultural practices, with an emphasis on microbial populations capable of suppressing soil borne disease and of increasing the nutrient uptake by the vine. The project will identify vineyard cover crop and floor management practices for the improvement of soil healt ....Vineyard soil health and microbial biodiversity under different cover crop and floor management practices. This project will examine vineyard ?soil health? by monitoring the populations of soil microorganisms under different vineyard cultural practices, with an emphasis on microbial populations capable of suppressing soil borne disease and of increasing the nutrient uptake by the vine. The project will identify vineyard cover crop and floor management practices for the improvement of soil health and sustainability in the rapidly expanding wine industry, providing considerable economic and environmental advantages to regional and rural communities.Read moreRead less
Reducing export of acid sulfate soil products (particularly iron, aluminium, phosphorus, and organic carbon) as contaminants to coastal waters. Current Australian management of acid sulfate soils (ASS) emphasises the reduction of acidity in floodplain drainage. However this acidity is mainly from the dissolved metals, which can be increased by some management techniques. Dissolved metals can be biotoxic or encourage harmful coastal phytoplankton. Organic metal complexes can increase metal tran ....Reducing export of acid sulfate soil products (particularly iron, aluminium, phosphorus, and organic carbon) as contaminants to coastal waters. Current Australian management of acid sulfate soils (ASS) emphasises the reduction of acidity in floodplain drainage. However this acidity is mainly from the dissolved metals, which can be increased by some management techniques. Dissolved metals can be biotoxic or encourage harmful coastal phytoplankton. Organic metal complexes can increase metal transport but shading of soil and drain surfaces, and constructed wetlands offers a new management tool. Our research aims to reduce transport to coastal waters of these ASS products. A sustainable Australian coast requires that improvement of ASS floodplains must not be at the environmental expense of coastal waters. Read moreRead less
Soil inference system for bridging the environmental modelling gap. The Australian environment is confronted with issues of degradation and long-term sustainability. There is a need to predict landscape processes into the future using simulation models. The limited availability of appropriate information on the soil is a fundamental barrier to this crucial modelling. This project will develop an inference system to predict soil properties from the very limited information. The results will be us ....Soil inference system for bridging the environmental modelling gap. The Australian environment is confronted with issues of degradation and long-term sustainability. There is a need to predict landscape processes into the future using simulation models. The limited availability of appropriate information on the soil is a fundamental barrier to this crucial modelling. This project will develop an inference system to predict soil properties from the very limited information. The results will be used to describe soil quality, to monitor the effects of agricultural management, and principally to provide information needed by policy makers concerned with sustainable land use.Read moreRead less
The auditability of soil carbon. Agriculture has the capacity to capture and store carbon emission in soil. However there is no guarantee that the industry will be able to benefit from carbon offsets in the current and future carbon economy, because there is no accurate and efficient way of measuring soil carbon storage. This project will provide a methodology that can measure and monitor soil carbon storage on individual farms with statistical confidence, which is crucial to the agricultural in ....The auditability of soil carbon. Agriculture has the capacity to capture and store carbon emission in soil. However there is no guarantee that the industry will be able to benefit from carbon offsets in the current and future carbon economy, because there is no accurate and efficient way of measuring soil carbon storage. This project will provide a methodology that can measure and monitor soil carbon storage on individual farms with statistical confidence, which is crucial to the agricultural industry taking part in the carbon economy.Read moreRead less
The Sustainable Effluent Irrigation Project - Effects of effluent irrigation on soil sodicity and groundwater quality. The land application of recycled municipal effluent is now regularly practised by a number of local authorities and agencies responsible for centralised collection of wastewater, its treatment and disposal. Treated municipal effluent is often land applied and used to grow hardwood plantations. Hardwood plantations are very effective in producing large amounts of biomass and also ....The Sustainable Effluent Irrigation Project - Effects of effluent irrigation on soil sodicity and groundwater quality. The land application of recycled municipal effluent is now regularly practised by a number of local authorities and agencies responsible for centralised collection of wastewater, its treatment and disposal. Treated municipal effluent is often land applied and used to grow hardwood plantations. Hardwood plantations are very effective in producing large amounts of biomass and also assist agencies in off-setting wastewater treatment and disposal costs associated with advanced wastewater treatment to remove nutrients. This project will examine the effects of effluent irrigation on soil chemistry and groundwater quality at two hardwood plantations in the Hunter Valley, NSW. It is increasingly clear that large-scale reuse schemes, particularly those involving hardwood plantations, must be designed to be sustainable and have no significant impact on soil chemistry (increasing sodicity) and groundwater. This project will develop irrigation regimes for hardwood plantations which will promote soil productivity and optimize effluent application rates for pollutant removal and biomass production.
Read moreRead less
Coal-ash as a resource for sustainable soil-management in plant production systems. Acidification and salinisation are major causes of land degradation in Australia, costing $1-2 billion to combat. Farmers used 1.9M t of lime and 1.0M t of gypsum to manage their soils in 2000. Power stations annually produce 12M t of coal-ash that have functional characteristics of lime and gypsum and can potentially ameliorate degraded land. Presently only 43% of the ash is used and almost entirely for constr ....Coal-ash as a resource for sustainable soil-management in plant production systems. Acidification and salinisation are major causes of land degradation in Australia, costing $1-2 billion to combat. Farmers used 1.9M t of lime and 1.0M t of gypsum to manage their soils in 2000. Power stations annually produce 12M t of coal-ash that have functional characteristics of lime and gypsum and can potentially ameliorate degraded land. Presently only 43% of the ash is used and almost entirely for construction with the rest going into landfills. This project will determine the sustainable use of coal-ash to improve structure and nutritive properties of the soil and to raise crop yield across several sites in Australia.Read moreRead less
Optimised field delineation of contaminated soils. This project seeks to cost-efficiently identify the contaminated areas of a soil site which will require remediation. There are many thousands of sites contaminated with metals and/or organics across urban and rural Australia and some tens of millions across the world. These sites pose a serious potential threat to human health. Detection (and remediation) of such sites is expensive. The project aims to deliver a cheaper method of detection thro ....Optimised field delineation of contaminated soils. This project seeks to cost-efficiently identify the contaminated areas of a soil site which will require remediation. There are many thousands of sites contaminated with metals and/or organics across urban and rural Australia and some tens of millions across the world. These sites pose a serious potential threat to human health. Detection (and remediation) of such sites is expensive. The project aims to deliver a cheaper method of detection through a novel combination of infra-red and X-ray spectroscopies combined with data-fused soil inference and optimised directed sampling and mapping. This is intended to reduce the economic barrier to detection and remediation, considerably hastening the removal of this health risk. Resulting novel technology could be transferred and commercialised internationally.Read moreRead less
Phytoremediation of arsenic contaminated sites using arsenic hyperaccumulating plants. The legacy of using arsenical compounds in pest control activities has resulted in many contaminated sites. Since the inorganic arsenic is carcinogenic, stringent laws have been enforced to control arsenic (As) in the environment. This project investigates the potential of using the recently discovered (Ma et al, 2001) arsenic hyperaccumulating (22,000 mgAs/kgDW) fern, Pteris vittata, in the removal of arsen ....Phytoremediation of arsenic contaminated sites using arsenic hyperaccumulating plants. The legacy of using arsenical compounds in pest control activities has resulted in many contaminated sites. Since the inorganic arsenic is carcinogenic, stringent laws have been enforced to control arsenic (As) in the environment. This project investigates the potential of using the recently discovered (Ma et al, 2001) arsenic hyperaccumulating (22,000 mgAs/kgDW) fern, Pteris vittata, in the removal of arsenic from dip sites and railway tracks in Qld, and orchards in northern NSW. The impacts of growing hyperaccumulating plants on grazing animals and the environment, and the disposal of arsenic from contaminated plants will also be studied.Read moreRead less
Conversion of Lignite to Biochars to Enhance Soil Fertility. Lignite, or brown coal, is used in power generation, but it is uneconomic to transport and acts as a significant source of greenhouse gases. The conversion of lignite to liquid fuel and char provides an economic source of fuel and the generation of a char which also lowers the carbon footprint associated with lignite processing. Lignite-derived char has potential to act as an agent for both promoting plant growth and improving soil hea ....Conversion of Lignite to Biochars to Enhance Soil Fertility. Lignite, or brown coal, is used in power generation, but it is uneconomic to transport and acts as a significant source of greenhouse gases. The conversion of lignite to liquid fuel and char provides an economic source of fuel and the generation of a char which also lowers the carbon footprint associated with lignite processing. Lignite-derived char has potential to act as an agent for both promoting plant growth and improving soil health. This project will do much to promote the use of chars, from a lignite source, which will increase the economic viability of mining brown coal. Read moreRead less