Effect of copper and zinc on wheat on newly cleared orange brpwn sandy earth of the central wheatbelt


Research organisaton

Trial details

Researcher(s) Gartrell &, Glencross
Year(s) 1966
Contributor Department of Agriculture and Food WA
Trial location(s) South Lake Grace, WA
Effect of copper and zinc on wheat on newly cleared  orange brpwn sandy earth  of the central wheatbelt locations

To determine the rates of copper and zinc required for maximum grain yield of wheat grown on  yellow gravelly sand.

Key messages
  • Cu increased with Zn or without Zn added to superphosphate.  
  • All Zn depressed yield when no  Cu, 2.75 & 5.5 Kg/ha had been applied.
  • With Zn nil and 0.8 kg Zn O Cu at 5.5 kgCu sul/ha gave maximum yield grain yield.Sulfate gave higher yield.
  • For wheat, combination of Cu sulfate (5.5 kg Cu sulfate) and nil  KgZno /ha required for maximum yields.
  • Zn deficiency symptoms seen extensive in wheat grown on Aerophos + gypsm  
  • Plain superphosphate yield higher than Aerophos +gypsum suggested  Zn soil is marginal and Zn addition (0.8 kg/ha) recommended for Oats and Clover.
Lead research organisation Department of Agriculture and Food WA
Host research organisation Department of Agriculture and Food WA
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners Not specified


Crop type Wheat
Treatment type(s)
  • Fertiliser
Trial type Experimental
Trial design Replicated

South Lake Grace 1966

Sow rate or Target density 50 kg wheat /ha,
Sowing machinery

!2 run sowing machine 

Sow date Not specified
Harvest date Not specified
Plot size 2.2m x 100m
Plot replication 3

180-200 kg Plain super/ha.

4 Copper as Cu sulfate [bluestone] Zn as Zn oxide

Cu sulfate [ 0, 2.75, 5.5, 8.25]

ZnO [0, 0.83, 1.67, 3.33]


Trial source data and summary not available
Check the trial report PDF for trial results.
Observed trial site soil information
Trial site soil testing
Not specified
Soil conditions
Trial site Soil texture
South Lake Grace, WA Not specified
Derived trial site soil information
Australian Soil Classification Source
Trial site Soil order
South Lake Grace, WA Hydrosol
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



Derived climate information

No observed climate data available for this trial.
Derived climate data is determined from trial site location and national weather sources.

South Lake Grace WA


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

SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
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: 28-05-2019 11:31am AEST