Response of mace wheat to potassium and nitrogen - Binnu


Research organisaton

Trial details

Researcher(s) N/A
Year(s) 2014
Contributor Northern Agri Group
Trial location(s) Site 11, Binnu, WA
Response of mace wheat to potassium and nitrogen - Binnu locations

To investigate responses to potassium and nitrogen in wheat. Wheat yeild and grain quality can be limited if either of these macro nutrients is in short supply.

Key messages

Potassium levels are low in this soil and this site should have been responsive to applied potassium, however due to seasonal and soil conditions there where no differences between treatments in this trial. The very dry June-August had a marked impact on crop growth, particularly tillering. This can be seen by the lack of differences in the head counts taken in September. Very hot conditions in early August also affected flowering in wheat and limited any response in grain yeild with later rains. Soil penetrometer readings in the paddock near the trial site showed hard pan and this in conjunction with the pH and Aluminium levels below 10cm would have restricted root growth and limited the wheat plants ability to access soil miosture at depth during the dry winter period. Without yield responses to applied treatments, crop return decreased as fertiliser rates increased.

Lead research organisation N/A
Host research organisation N/A
Related program N/A
Acknowledgments N/A
Other trial partners Not specified
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Crop type Wheat
Treatment type(s)
  • Fertiliser: Rate
Trial type Experimental
Trial design Randomised,Replicated,Blocked

Binnu 2014

Sow rate or Target density 75kg/ha
Sow date 8 May 2014
Harvest date Not specified
Plot size 20m x 2.05m
Plot replication 3

At seeding 75kg/ha mapszc banded


8th May 2L/ha Triflurin 26th May 800ml/ha Velocity and Hasten @ 1%vv


200ml.ha dominex & 200ml/ha Lorsban

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Download results

Trial results Table 1

# Variety
Treatment 1
Treatment 2
Return on investment ($/ha) Grain yield (t/ha) Head abundance (heads/m2) Fertiliser cost ($/ha)
1 Mace 0N 0K 408.41 1.48 119 66.68
2 Mace 0N 10K 424.54 1.57 115 79.44
3 Mace 0N 20K 427.83 1.62 117 92.2
4 Mace 0N 40K 395.89 1.6 113 117.72
5 Mace 30N 0K 440.34 1.69 110 102.15
6 Mace 30N 10K 414.74 1.65 122 114.91
7 Mace 30N 20K 350.62 1.49 119 127.67
8 Mace 30N 40K 331.52 1.51 114 153.19
9 Mace 60N 0K 369.5 1.62 122 150.53
10 Mace 60N 10K 353.53 1.61 112 163.29
11 Mace 60N 20K 337.56 1.6 114 176.05
12 Mace 60N 40K 276.73 1.49 121 201.57
13 Mace 90N 0K 314.09 1.58 117 193.1
14 Mace 90N 10K 294.91 1.56 117 205.86
15 Mace 90N 20K 311.04 1.65 109 218.62
16 Mace 90N 40K 259.84 1.57 122 244.14

Grain yield t/ha


Fertiliser cost $/ha


Head abundance heads/m2


Return on investment $/ha

Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
Site 11, Binnu, WA Yellow deep sand
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
Site 11, Binnu, WA Chromosol
National soil grid Source
NOTE: National Soil Grid data is aggregated information for background information on the wider area
Actual soil values can vary significantly in a small area and the trial soil tests are the most relevant data where available

Soil properties



Site 11, Binnu WA 2014

Observed climate information

Rainfall trial gsr (mm) 262mm

Derived climate information

Site 11, Binnu WA

NOTE: Exact trial site locality unknown - Climate data may not be accurate

Some data on this site is sourced from the Bureau of Meteorology

SILO weather estimates sourced from
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol 16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.

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Trial last modified: 25-06-2019 13:40pm AEST