Investment
Investment
Predicting nitrogen cycling and losses in Australian cropping systems - augmenting measurements to enhance modelling
This five year investment will collect a comprehensive data set of N balance and cycling with explicit measurement of loss pathways to address key gaps in data for the most important soil types and farming systems across Australia's grain growing areas. A consortium of researchers, led by the University of Queensland will monitor N cycling and losses at key experimental sites and other trials for three seasons across WA, SA, Victoria, NSW and Qld. Detailed measurements at these key locations will serve as case studies that bring credibility to N cycling and losses for the grains industry. Extending detailed N measurements from a limited number of sites to represent the national grains industry as a whole will require the use of models. Consequently, these data will be also used to enhance and augment the relevant N routines in the APSIM NextGen crop and soil model which will then be used to make predictions of N loss and environmental impacts for grain production across Australia. A summary of the case studies, improved APSIM simulations and consequent implications for environmental impacts will be communicated to the grains industry, marketers, policy makers and researchers.
- Project start date:
- 18/04/2022
- Project end date:
- 01/06/2026
- Crop type:
-
- Wheat, (Cereal)
- Barley, (Cereal)
- Canola/Rapeseed, (Oilseed)
- Organisation
- The University of Queensland
- Region:
- North, South, West
- Project status
- Active
GRDC News
Getting a firm grip on nitrogen losses
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Denitrification and volatilisation are the two main gaseous loss pathways for nitrogen from cropping systems,...
National study into nitrogen losses
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Growers spend around $1.1 billion on nitrogen fertiliser each year, yet 25 to 70 per...
Rewriting nitrogen fertiliser ‘rules of thumb’
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Commonly used rules of thumb, which advisers and growers use to make fertiliser decisions, are...
Nitrogen’s value extends beyond yield
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The sufficiency approach means that nitrogen mined from soil organic matter is not replenished, causing...
New study to track complete picture of...
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A new national research project is investigating the dynamics of nitrogen (N) cycling and losses...
GRDC looks to better understand nitrogen loss...
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Parts of Australia’s northern grain-growing region could be at a heightened risk of losing nitrogen...
Update papers
- 1709643600000, Off-site losses and nitrogen use efficiency – swings and roundabouts and the potential impact of stabilised fertilisers on nitrogen recovery in northern production systems
- 1693231200000, Nutrition strategies to mitigate yield losses following waterlogging – lessons from southern environments
- 1690380000000, Impacts of a high rainfall season on the Eyre Peninsula on soil nitrogen and carbon
- 1689602400000, Optimising the nitrogen investment - Understanding and minimising N losses while feeding the crop what it needs
- 1677416400000, Nitrous oxide emissions from cropping soils in the Western Australian grainbelt: a 10-year perspective
- 1654524000000, Nitrogen loss pathways – how much do we lose and in what form under different situations
Podcasts
Predicting Nitrogen Loss – better data better decisions - GRDC
1682431200000Darryl Anderson interviews Professor Mike Bell and Dr David Lester to find out about GRDC’s $11.9 million investment into predicting...
Predicting Nitrogen cycling and losses in Australian cropping systems - GRDC
1658239200000With water logging across paddocks, growers are at heightened risk of losing nitrogen from denitrification, and it’s an issue GRDC...