risks

Land use effects on soil nutrient enrichment: risks for weed invasion

This project examined various soil and vegetation properties of remnant eucalypt grassy woodlands under different livestock grazing regimes within agricultural landscapes on the southern tablelands and south west slopes of N.S.W. All woodlands contained…

Pathway risk analysis for weed spread within Australia

This project is designed to ascertain the ways in which weeds spread once in Australia and to assess the relative risks or threats from different pathways of weed spread. This will enable better targeting of efforts to reduce the movement of high risk…

Root Zone Salinity Risks in the Lower Murray Districts

As a result of improved irrigation management and systems, growers in the Lower Murray (Riverland-Sunraysia) horticultural region have improved their water use efficiency (WUE) over the past two decades from about 50% to about 80%. However a negative consequence of this achievement is the emerging risk of salinity build-up in the root zone, threatening the sustainability of the region (Biswas et al. 2005a; Biswas et al. 2005b). The amount of irrigation applied must account for (more)...

Irrigation Update No.7 Newsletter of the National Program for Sustainable Irrigation

In this issue:

• Report card on National Program
• Getting the best out of NWC funding
• Visit us at Stand 415 at IAA2006

Open Hydroponics: Risks and Opportunities

The aim of this assessment was to examine the irrigation supply related issues that relate to existing and more importantly potential enterprises undertaking Open Hydroponic (OH) irrigation within the major irrigation districts of Victoria and New South Wales. While this assessment looked at the irrigation of Citrus in particular, it did not exclude the use of OH on other crops and sought to address the supply issues for all (more)...

Open Hydroponics: Risks and Opportunities

The following report is a brief study and interpretation of the publicly known principles and theories of Open Hydroponics (OH). Scientific validation of the principles of OH, productivity gains from OH and in-field assessment of the practicality of OH was not a part of this study. Published information on OH was reviewed, however very little published information was (more)...

Open Hydroponics: Risks and Opportunities

The purpose of this component of the research was to develop a method to identify likely ecological risks associated with Open Hydroponics (OH) in the Mallee region, using an ecological risk assessment approach. Ecological Risk Assessment (ERA) is the process of defining and assessing the risks to ecological resources of anthropogenic hazards and determining the acceptability of those risks. The hazard(s) can be any chemical, physical or (more)...

Open Hydroponics: Risks and Opportunities

The aim of the workshop was to:

• Update and discuss the results of the project with team members, affiliated contributors and nominated stakeholders
• Develop recommendations for stage two of the project

Open Hydroponics: Risks and Opportunities

Open Hydroponics (OH) is an innovative horticultural management program with over 2700ha currently being adopted in Australia and presents an opportunity for
more sustainable production (economic and environmental). Conventional drip irrigation growers are also adopting selected Open Hydroponic principles, which use similar practices and carry the same possible benefits and environmental risks.

Assessment of the ecological risks associated with irrigation in the Ord River Catchment

The purpose of this project is, as part of a larger NPIRD project, to identify potential ecological risks associated with irrigation systems in the Lower Ord River catchment. Specifically the objectives of this project are to: Develop a list of up to six ecological consequences of development in the catchment where irrigation is likely to have a significant impact. This is to done in consultation with relevant catchment stakeholders, identified by (more)...