Research Project
Researchers:
Anthony Webster
(collaborator)
,
Australian Institute of Marine Science
(Associated with)
,
Australian Institute of Marine Science (AIMS)
(Associated with)
,
Damien Burrows
(collaborator)
,
Dowie, Jayson
(collaborator)
View all 15 related researchers
Full description The sugar industry occupies 350,000ha in Reef catchments, applies >55,000t of nitrogen (N) fertilizer annually and is a major contributor of dissolved inorganic nitrogen (DIN) to Great Barrier Reef receiving waters. There are many potential mechanisms for reducing on-farm Nusage. However, the comprehensive review of N use in sugarcane (SRA/DoE 2014) identified widespread over-use of N fertilizer and recommended adopting production zone yield potential (PZYP) combined with enhanced efficiency fertilizers (EEFs) to reduce ’surplus N’ (where applied N>crop requirements). This project utilized existing farm trials at identified N loss ‘hot spots’ to test PZYP as the basis for determining fertilizer N rates and for comparing EEFs with standard N fertilizers for minimizing N losses. Water quality benefits that derive from such practice changes were evaluated. Productivity, economic and environmental indicators validated these strategies for reducing surplus N and produced recommendations for enhanced Best Management Practices.
Notes
Credit
This project was funded by the Australian Government's Department of Agriculture, Water and the Environment through the National Environmental Science Programme Tropical Water Quality (NESP TWQ) hub with co-investment from project partners and collaborators.
Data time period: 2019-01-01 to 10 12 2020
Project page
url :
https://nesptropical.edu.au/index.php/round-5-projects/project-5-11/
NESP TWQ Hub
url :
https://nesptropical.edu.au/index.php/nesp-twq/
Department of Climate Change, Energy, the Environment and Water - National Environmental Science Program website
url :
https://www.dcceew.gov.au/science-research/nesp/hub-tropical-water-quality
Project photo gallery
url :
https://eatlas.org.au/nesp-twq-5/qld-on-farm-nitrogen-management-5-11
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