Nitrogen use efficiency

Reductions in nitrogen use efficiency (NUE) are determined by a number of factors, including N leaching, losses of N from the soil as gas and crop diseases. Given the current seasonal conditions, how can nitrogen inputs be optimised for the 2019 growing season? There are more than 60 trials in OFT that contain results on NUE and address a number of topics, including soil water interactions, N source and placement, topdressing and soil-specific N strategies.

For further information on improving NUE, refer to the following GRDC resources:

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31 total results found Matching the current search filters and located within the visible map area.

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Aims:

To evaluate the performance of different in-crop nitrogen treatments and plant populations at a range or row spacings in first wheat following canola.

Crop type: Wheat 4 trials Fertiliser Method Sowing Row spacing
Yarrawonga, VIC
Research organisatons
Funding source

Aims:

The project seeks to:

  • investigate, demonstrate and extend cultural practices that will assist growers to adopt no-till stubble retention (NTSR) in medium and higher-rainfall environments;
  • build on findings from the previous Riverine Plains Inc. Water Use Efficiency (WUE) project; and
  • extend the fr… read more
Crop type: Barley,Canola,Wheat 4 trials Crop Rotation Stubble Management
Corowa, NSW Henty, NSW Dookie, VIC Yarrawonga, VIC
Research organisaton
Funding source

Aims:

The project seeks to:

  • investigate, demonstrate and extend cultural practices that will assist growers to adopt no-till stubble retention (NTSR) in medium and higher-rainfall environments;
  • build on findings from the previous Riverine Plains Inc. Water Use Efficiency (WUE) project; and
  • extend the fr… read more
Crop type: Wheat,Canola 3 trials Crop Rotation Stubble Management
Coreen, NSW Dookie, VIC Yarrawonga, VIC
Research organisaton
Funding source

Aims:

To compare nitrogen use efficiency of anhydrous ammonia and urea under commercial conditions.

Crop type: Sorghum 1 trial Crop Type Growth regulator Type Growth regulator Timing Growth regulator Application
Jondaryan, QLD
Research organisaton
Funding source

Matching nitrogen to variety

David Scholz (Elders Ltd) and Clare Johnston (Liebe Group)

Aims:

To evaluate yield and quality response of existing wheat varieties when treated at different nitrogen rates. Aiming to maximise nitrogen use efficiency by matching inputs to variety.

Crop type: Wheat 1 trial Fertiliser Rate Variety Type
East Dalwallinu, WA
Research organisatons

Aims:

To investigate the effects of nitrogen placement and timing in wheat.

Crop type: Wheat 1 trial Fertiliser Type Fertiliser Rate Fertiliser Timing
Dalwallinu, WA
Research organisatons

Aims:

To determine the amount and availability of N from wheat stubble under varying stubble management practices over three cropping seasons.

Crop type: Wheat 3 trials Stubble Management Stubble Height
Horsham, VIC
Research organisaton
Funding source

Aims:

  • The asses whether Yield Prophet could help make a better nitrogen fertiliser decision using yield potentials and available stored moisture.
  • To evaluate the effectiveness of various Flexi-N application strategies.

Crop type: Wheat 1 trial Fertiliser Type Soil Preparation
, WA
Research organisaton

Aims:

This trial was established 2006 to :

  • demonstrate responses to Super Phos, potash and lime in pasture and the benefits to the following crop, and
  • to demonstrate the benefits of pasture manipulation and intake in furrow to the following crop.
Crop type: Wheat 1 trial Fertiliser Type Fertiliser Rate Soil amelioration Application
Dandaragan, WA
Research organisatons

Aims:

To compare K fertiliser strategies and to investigate the effect of K supply on N.

Crop type: Wheat 1 trial Fertiliser Application
East Carnamah, WA
Research organisatons

Aims:

A long-term study was established at the Minnipa Agricultural Centre from 2008 to 2016 (EPFS Summaries 2008 to 2015) to assess the systems impact of grazing on crop and pasture production, and soil health. 

Crop type: Wheat 1 trial Fertiliser Rate Grazing Regime Sowing Rate
Minnipa Agricultural Centre, SA
Research organisatons
Funding source

Aims:

To assess the impact of applying Nitrogen at different rates and timings on grain yields of selected wheat varieties.

Crop type: Wheat 1 trial Variety Type
Conmurra, SA
Research organisaton
Funding source

Aims:

To assess the impact of applying additional Nitrogen at different rates and timings on the grain yield of Bolac wheat.

Crop type: Wheat 1 trial Fertiliser Timing Fungicide Rate
Frances, VIC
Research organisaton
Funding source

Aims:

To assess the impact of applying Nitrogen at different rates and timings and insecticide for the control of BYDV on grain yields of selected wheat varieties.

Crop type: Wheat 2 trials Variety Type
Conmurra, SA
Research organisaton
Funding source

Soil-specific nitrogen strategies

Therese McBeath, Bill Davoren, Rick Llewellyn, Vadakattu Gupta (CSIRO) and Anthony Whitbread (ICRISAT)

Aims:

To identify opportunities to reduce risk and increase profitability by evaluating the soils and conditions where continuous cereal systems perform best and where inputs can be most cost-effectively targeted

Crop type: Wheat 6 trials Fertiliser Rate Soil Type
Karoonda, SA
Research organisatons
Funding source

Aims:

To assess the impact of applying Nitrogen at different rates and timings and insecticide for the control of BYDV on grain yields of selected wheat varieties.

Crop type: Wheat 2 trials Variety Type
Frances, VIC
Research organisaton
Funding source

Improving water use efficiency – crop rotations

Chris Lawson, Victor Sadras (SARDI) and Glenn McDonald (University of Adelaide)

Aims:

To assess the performance of wheat following either peas, wheat or barley.

Crop type: Barley,Wheat,Kaspa peas 12 trials Crop Crop Type Crop Rotation
, , SA Condowie, SA
Research organisaton
Funding source

Aims:

To evaluate the principles of full canopy management through integration of crop inputs (nitrogen, fungicide and growth regulators) across both wheat and barley to maximize crop strength, resilience and yield capacity in high yielding environments. 

Crop type: Wheat 1 trial Fertiliser Rate Fertiliser Timing Fungicide Timing Growth regulator Timing
Inverleigh, VIC
Research organisaton
Funding source

Aims:

To assess the yield of a number of agronomic treatments on barley varieties.

Crop type: Barley 2 trials Variety Type
Wolseley, SA
Research organisaton
Funding source

Aims:

To ascertain the amount and availability of N under varying stubble management practices and soil environments.

Crop type: Wheat 1 trial Crop Rotation Fertiliser Method
Horsham, VIC
Research organisaton
Funding source

Aims:

The objective of this research is to determine the value of agronomic management (plant density and nitrogen) on production of quality grain for profitable wheat systems. Increasing plant density is a useful tool to increase the competitiveness of a crop against weeds, however, how will this influence grain yield and quality for the new wheat va… read more

Crop type: Wheat 1 trial Fertiliser Rate Sowing Rate
East Dalwallinu, WA
Research organisaton
Funding sources

Managing nutrition in sandy soils to close the yield gap

Therese McBeath, Bill Davoren, Rick Llewellyn and Willie Shoobridge (CSIRO)

Aims:

Sandy soil types of the Northern Mallee often underperform despite good weed management and increased inputs of nitrogen and sulphur. There is still a yield gap that can be addressed, with anecdotal evidence of unused water commonly remaining in the soil at depths of approximately 60cm at harvest. In 2014 we set in place a diagnostic procedure t… read more

Crop type: Wheat 1 trial Fertiliser Type Fertiliser Rate Fertiliser Timing
Loxton, SA
Research organisatons
Funding sources

Aims:

To evaluate the performance of different drill openers at a range or row spacings in canola following wheat to improve water use efficiency (WUE) in no-till cropping and stubble retention systems in spatially and temporally variable conditions in the Riverine Plains.

Crop type: Canola 1 trial Sowing Method Sowing Row spacing
Coreen, NSW
Research organisatons
Funding source

Aims:

To (i) ground truth through statistical analysis of small plot trials current practices of leading farmers in regards to the use of Variable Rate Technology (VRT), predictive yield modelling and nutrition modelling in improving water use efficiency and hence profitability; (ii) address the hypothesis that greater return on investment can be achi… read more

Crop type: Wheat 2 trials Fertiliser Application
Allanooka, WA Yarragadee, WA
Research organisaton
Funding source

Aims:

To assess the impact of BYDV on wheat yield.

Crop type: Wheat 2 trials Variety Type
Conmurra, SA
Research organisaton
Funding source

Aims:

To assess the yields of a range of agronomic treatments on wheat varieties at different sites.

Crop type: Wheat 4 trials Variety Type
Conmurra, SA Frances, VIC
Research organisaton
Funding source

Aims:

To assess if the previous year's results from this experiment could be replicated in a year with average to above average growing season rainfall (GSR).

Crop type: Wheat 1 trial Fertiliser Rate Sowing Rate
Balldale, NSW
Research organisatons
Funding source
Riverine Plains John Sykes Rural Consulting

Aims:

This was the first year of an intended long term trial investigating the effect of K nutrition on sandplain. Potassium was applied at rates between zero and 100 kg/ha IBS and banded in the forms of MOP and compound NPK product (Vigour).

Crop type: Canola 1 trial Fertiliser Rate Fertiliser Timing Fertiliser Method
West Moora, WA
Research organisatons

Aims:

To assess the logistical advantages and crop safety of resin coated urea relative to standard urea for use in WA agriculture.

Crop type: Wheat 1 trial Fertiliser Type Fertiliser Rate Fertiliser Timing Fertiliser Application
Buntine, WA
Research organisaton

Aims:

  • To use PA maps to identify and sample soil zones within a paddock.
  • To identify potential soil specific nitrogen responses within paddocks.
  • To compare different nitrogen fertiliser products.

Crop type: Wheat 1 trial Fertiliser Type Soil Type
Ouyen, VIC
Research organisaton
Funding source

Aims:

To assess the potential production benefits of various nhanced efficiency nitrogen fertilisers (EENFs) and liquid fertiliser strategies.

Crop type: Wheat 1 trial Fertiliser Type Fertiliser Rate Fertiliser Timing
Inverleigh, VIC
Research organisaton