To add Urea or not?

Urea is used as a fertiliser and has a high nitrogen percentage. Nitrogen promotes green leafy growth and aids in photosynthesis. The question that many researchers ask is "Does adding urea translate into either extra yield or extra biomass?". The urea trials on OFT below can provide some insights.

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

110 results have a trial report available
73 results have export data available
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Aims:

  • Assess the effect of nitrogen timing on crop response.
  • Assess the effect of nitrogen placement on crop response.
  • Compare a range of liquid nitrogen fertilisers with granular urea.
  • Assess the effectiveness of numerous products aimed at controlling the release of nitrogen.

Crop type: Wheat 2 trials Fertiliser Type Fertiliser Rate Fertiliser Timing Fertiliser Application
Inverleigh, VIC Yalla-Y-Poora, VIC
Research organisaton
Funding source

Aims:

The broad aim of this 3 year SAGIT funded project was to investigate if current management tools for medic based pastures, such as herbicides, fertilisers and rhizobial inoculants, are affecting N fixation by medic pastures under field conditions typical of the upper Eyre Peninsula.

Crop type: Medic 3 trials Fertiliser Rate Herbicide Type Herbicide Timing
Minnipa Agricultural Centre, SA Piednippie, SA Pingbong, SA
Source Data Unavailable
Research organisaton
Funding source

Aims:

To demonstrate the effectiveness of two types of surface applied organic amendments – compost and chicken manure. 

Crop type: Barley,Canola 2 trials Fertiliser Type Fertiliser Rate Fertiliser Timing
Forge Creek, VIC Giffard, VIC
Research organisaton

Aims:

To assess the efficacy of two nitrification inhibitors, 3,4-dimethylpyrazole (DMP) and nitrapyrin, when applied directly into the anhydrous ammonia stream during pre-plant nitrogen (N) application for commercial irrigated cotton production.

Crop type: Cotton 2 trials No treatment
Gunnedah, NSW Emerald, QLD
Source Data Unavailable
Research organisaton
Funding sources

Aims:

To further investigate the impact of rainfall timing on the effectiveness of topdressed urea N uptake, and
the possible role of Agritain-treated urea to overcome the problems with the timing of topdressing.

Crop type: Wheat,Canola 4 trials Crop Fertiliser Fertiliser Timing
Gunning Gap, NSW Wirrinya, NSW
Research organisaton

Aims:

To determine the effectiveness of urease inhibitor products.

Crop type: Wheat 1 trial Fertiliser
Warradarge, WA
Source Data Unavailable
Research organisatons

Aims:

To determine the extent of volatilisation loss of two nitrogen fertilisers (granular urea vs. liquid UAN) applied over a number of days at the end of tillering on a Wimmera grey clay soil (Marnoo) and Mallee clay loam (Birchip).

Crop type: Wheat 1 trial Fertiliser Type Fertiliser Timing Fertiliser Form Fertiliser Application
Marnoo, VIC
Source Data Unavailable
Research organisaton

Aims:

  • To compare the effects of variable urea rate on two soil types.
  • To compare different rates of urea applied at GS30.

Crop type: Wheat 1 trial Fertiliser Rate
Kimba, SA
Research organisaton
Funding sources

Variable urea rates on sandy loam and deep sand

Nicole Dimos (SPAA), Tim Moyle (Landmark Kimba), Linden Masters (MAC), Leigh Davis and Brenton Spriggs (SARDI), Linden Masters (FSG)

Aims:

  • To compare the effects of variable urea rate on two soil types.
  • To compare different rates of urea applied at GS30.

Crop type: Wheat 1 trial Fertiliser Rate Soil Type
Kimba, SA
Research organisaton
Funding source

Aims:

To look at the potential of black urea in terms of lifting yields through better nitrogen efficiency.

Crop type: Barley 1 trial Fertiliser Type Fertiliser Rate
West Buntine, WA
Research organisaton

Aims:

To investigate whether skipped-row urea application at sowing can imporve nitrogen efficiency.

Crop type: Wheat 1 trial Fertiliser Rate Fertiliser Application
Watchupga East, VIC
Source Data Unavailable
Research organisaton

Top dressing canola with urea: amounts and timing

Ken Motley (NSW Agriculture), David Harbison (Hi-Fert Fertilisers) and Andrew Rice (CWFS)

Aims:

To look at the effectiveness of top-dressed urea on canola and the importance of timing prior to rainfall. 

Crop type: Canola 3 trials Fertiliser
Gunning Gap, NSW Mulyandry, NSW Wirrinya, NSW
Research organisaton

Aims:

To evaluate the rate of breakdown and nutrient release of a resin coated urea relative to traditional Nitrogen Sources (Urea and Maxam).

Crop type: Lupins 1 trial Fertiliser Type Fertiliser Rate Fertiliser Timing
Badgingarra, WA
Research organisatons

Aims:

To investigate the response of wheat to polymer-coated urea.

Crop type: Wheat 1 trial Fertiliser Type
Regans Ford, WA
Source Data Unavailable
Research organisatons
Funding source

Aims:

To evaluate the impact of urea timing, method and rate in wheat.

Crop type: Wheat 1 trial Crop Type
Billa Billa, QLD
Research organisaton
Funding source

Aims:

To evaluate the impact of Urea application in sorghum.

Crop type: Sorghum 1 trial Crop Type Fertiliser Rate Fertiliser Timing Fertiliser Method
St Ruth, QLD
Research organisaton
Funding source

Aims:

To evaluate the impact of Urea timing and method of application in wheat.

Crop type: Wheat 1 trial Herbicide Herbicide Rate Herbicide Application Herbicide Method
Billa Billa, QLD
Research organisaton
Funding source

Aims:

To determine the effect that urea and GranAm (SOA), deep banded at different rates, has on canola establishment.

Crop type: Canola 1 trial Fertiliser Type Fertiliser Rate
Sea Lake, VIC
Research organisaton
Funding source

Aims:

To evaluate the impact of Urea timing and method of application in wheat

Crop type: Wheat 1 trial Fertiliser Fertiliser Rate Fertiliser Application Fertiliser Method
Macalister, QLD
Research organisaton
Funding source

Aims:

To evaluate the impact of Urea timing and method of application in wheat

Crop type: Wheat 1 trial Fertiliser Fertiliser Rate Fertiliser Timing
Macalister, QLD
Research organisaton
Funding source

Aims:

To evaluate the impact of Urea timing and method of application in wheat

Crop type: Wheat 1 trial Herbicide Herbicide Rate Herbicide Timing Herbicide Method
Tulloona, NSW
Research organisaton
Funding source

Aims:

To evaluate the impact of Urea timing and method of application in wheat

Crop type: Wheat 1 trial Herbicide Herbicide Rate Herbicide Timing Herbicide Method
Tulloona, NSW
Research organisaton
Funding source

Aims:

To evaluate the impact of Urea timing and method of application in wheat.

Crop type: Wheat 1 trial Herbicide Herbicide Rate Herbicide Timing Herbicide Method
Billa Billa, QLD
Research organisaton
Funding source

Aims:

To evaluate the impact of Urea timing, method and rate in wheat.

Crop type: Wheat 1 trial Growth regulator Rate Growth regulator Timing Growth regulator Application
Mullaley, NSW
Source Data Unavailable
Research organisaton
Funding source

Aims:

To evaluate wheat variety response to Urea timing and method of application.

Crop type: Wheat 2 trials Fertiliser Fertiliser Rate Fertiliser Timing Variety Variety Type
Tulloona, NSW
Research organisaton
Funding source

Aims:

To evaluate wheat variety response to Urea timing and method of application.

Crop type: Wheat 1 trial Variety Variety Type
Billa Billa, QLD
Research organisaton
Funding source

Aims:

To evaluate wheat variety response to Urea timing and method of application 

** See also LB1602 - variety x rate x timing factorial

Crop type: Wheat 1 trial Variety Variety Type
Macalister, QLD
Research organisaton
Funding source

Aims:

To evaluate wheat variety response to Urea timing and method of application 

 

Crop type: Wheat 1 trial Fertiliser Fertiliser Type Fertiliser Rate Variety Variety Type
Macalister, QLD
Research organisaton
Funding source

Aims:

To evaluate wheat variety response to Urea timing and method of application.

Crop type: Wheat 2 trials Fertiliser Fertiliser Rate Fertiliser Timing Variety Variety Type
Tulloona, NSW
Research organisaton
Funding source

Aims:

To evaluate wheat variety response to Urea timing and method of application.

Crop type: Wheat 1 trial Fertiliser Fertiliser Rate Fertiliser Timing Variety Variety Type
Billa Billa, QLD
Research organisaton
Funding source

Aims:

To evaluate the impact of slow release Urea products on yield, grain quality and economics.

Crop type: Wheat 1 trial Fertiliser Fertiliser Type Fertiliser Rate Fertiliser Timing
Gunnedah, NSW
Research organisaton
Funding source

Aims:

To evaluate the impact of slow release Urea products on yield, grain quality and economics in wheat. 

Crop type: Wheat 1 trial Fertiliser Fertiliser Type Fertiliser Rate Fertiliser Timing
Moree, NSW
Research organisaton
Funding source

Aims:

To evaluate the impact of slow release Urea products on yield, grain quality and economics in wheat. 

Crop type: Wheat 1 trial Fertiliser Fertiliser Type Fertiliser Rate Fertiliser Timing
Moree, NSW
Research organisaton
Funding source

Aims:

To evaluate the impact of slow release Urea products on yield, grain quality and economics.

Crop type: Wheat 1 trial Fertiliser Fertiliser Type Fertiliser Rate Fertiliser Timing
Narrabri, NSW
Research organisaton
Funding source

Crystal green: a potential phosphorus replacement

Sarah Noack and Peter Hooper (Hart Field Site Group) and Greg Butler (SANTFA)

Aims:

To compare Crystal Green with traditional DAP and urea applications alone and in combination. 

Crop type: Wheat 1 trial Fertiliser Fertiliser Type Fertiliser Application
Hart, SA
Research organisaton

Aims:

To evaluate whether TwinN could enable reductions in urea rates without loss of yield in wheat in the medium-high rainfall Victorian wheat region.

Crop type: Wheat 1 trial Fertiliser Type Fertiliser Rate
Lake Bolac, VIC
Research organisaton

Aims:

To evaluate the effect various rates of granular urea spread 3-4 weeks post of seeding has on the yield and profitability of wheat.

Crop type: Wheat 1 trial Fertiliser Rate
East Coorow, WA
Research organisaton
Funding source

Aims:

To evaluate the impact of timing and method of Urea application in wheat.

**see also LB1601 - rate and LB1601 - method for rate x timing and method x timing factorials.

Crop type: Wheat 1 trial Fertiliser Fertiliser Type Fertiliser Rate Fertiliser Timing
Macalister, QLD
Research organisaton
Funding source

Aims:

To evaluate the impact of timing and method of Urea application in wheat.

**see also DK1602 - rate and DK1602 - method for rate x timing and method x timing factorials.

Crop type: Wheat 1 trial Herbicide Herbicide Rate Herbicide Timing Herbicide Method
Tulloona, NSW
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

Aims:

To evaluate the impact of timing and method of Urea application in wheat.

**see also DK1601 - rate and DK1601 - method for rate x timing and method x timing factorials. 

Crop type: Wheat 1 trial Herbicide Herbicide Rate Herbicide Timing Herbicide Application Herbicide Method
Billa Billa, QLD
Research organisaton
Funding source

Aims:

  • To compare in crop protein response to late application of urea, Easy N and dissolved urea in solution.
  • To assess differences in topdress nitrogen response when these products are treated with Agrotain.

Crop type: Wheat 1 trial Fertiliser Type Fertiliser Rate Fertiliser Application
Inverleigh, VIC
Research organisaton
Funding source

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 assess the use of banded slow release nitrogen in comparison to banded urea and best practice farmer practice.

Crop type: Wheat 1 trial Fertiliser
Regans Ford, WA
Source Data Unavailable
Research organisatons
Funding source

Aims:

To measure: nitrous oxide fluxes in a wheat crop when different rates of nitrogenous urea fertiliser were applied. The effect on wheat yield and quality of applying fertiliser at zero, medium and high urea rates.

Crop type: Wheat 2 trials Fertiliser Rate
Birchip, VIC Rupanyup, VIC
Research organisaton
Funding source

Seeder trial

Bill Gardner (WestVic AgServices), Robert Fraser and George Burdett (SFS)

Aims:

To drill 6kg/ha canola seed, plus 110 kg/ha MAP and 100 kg/ha urea.

Crop type: Canola 1 trial Soil Soil Preparation
Inverleigh, VIC
Research organisaton

Amsul evaluation trial

Campbell Brumby (Pro-Ag Fertilisers) and Wes Arnott (SFS)

Aims:

To identify if Amsul, NPKS 21:0:0:24 is a cost effective alternative to urea and gypsum as source of nitrogen and sulphate sulphur.

Crop type: Canola 1 trial Fertiliser Type
Gnarwarre, VIC
Research organisaton

Aims:

  • To understand the genetic control in lentils relating to tolerance to the range of sulfonyl urea herbicides.

Crop type: Lentils 1 trial Herbicide
Curyo, VIC
Source Data Unavailable
Research organisatons
Funding sources

Aims:

  • To understand the genetic control in lentils relating to tolerance to the range of sulfonyl urea herbicides.

Crop type: Lentils 1 trial Herbicide
Pimpinio, VIC
Source Data Unavailable
Research organisatons
Funding sources

Aims:

To investigate different nitrogen timings on the grain yield and quality of canola. Also to compare the performance of urea and sulphate of ammonia (SOA) as sources of nitrogen.

Crop type: Canola 1 trial Variety Type
Hart, SA
Source Data Unavailable
Research organisaton