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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)...

Salinity Impact on Lower Murray Horticulture

Project Objectives

  • Determine/update the crop salinity relationships
  • Determine the variability of EC (soil water) and leaching efficiency in the field
  • Simulate different scenarios of River Murray salinity at Morgan
  • Input to the MDB Salinity Strategy and Integrated Catchment Management Plan

Knowledge & tools to manage fertigation technologies in highly productive citrus orchards for minimal environmental footprint

High frequency fertigation is being adopted by Australian citrus producers as an alternative to traditional approaches to supplying water and mineral nutrients to trees. Information, guidelines and practical tools to assess performance are insufficient to support the economic & sustainable use of these technologies for citrus production on Australian soils.

LongStop: A more Sensitive Wetting Front Detector

This pilot study evaluates the performance of the LongStop under a furrow irrigated cotton crop on a cracking grey clay soil.

Salinity impact on Lower Murray horticulture

The project was developed to test the hypothesis: ‘a depressed leaching efficiency (LE) in the Lower Murray irrigation districts raises the root zone salinity and, improved water use efficiency (WUE) has an upper limit determined by that field’s LE and its variance’. The specific objectives were to: Determine/update the salinity relationships for irrigated horticulture along the Lower (more)...

Wastewater recycling in nurseries

National Program for Sustainable Irrigation Fact sheet 2005/3

Reducing water run-off, minimising nutrient leaching and optimising irrigation efficiency are major challenges for the nursery industry. A comprehensive review of Australian and international research programs covering all aspects of waste water management in nurseries has been carried out by Horticulture Australia Limited (HAL) - a funding partner for the National Program for Sustainable Irrigation. The review identified useful resources for the industry and best practice in (more)...

Salinity Impact on Horticulture in the Lower Murray

Sustainable Irrigation Program Research Proposal

The high value horticultural production systems along the lower Murray is likely to continue to suffer from increasing salinity levels in irrigation water despite improved irrigation management, saline groundwater interception and future environmental flows. The effects that variations in leaching efficiency and irrigation management have on soil salinity are also inadequately quantified.