Overcoming copper deficiency in wheat with foliar sprays

1985

Research organisaton

Trial details

Researcher(s) N/A
Year(s) 1985
Contributor Department of Agriculture and Food WA
Trial location(s) Lake Grace -Newdegate, WA
Overcoming copper deficiency in wheat with foliar sprays locations
Aims

To determine the ffectiveness of foliar sprays of copper  fertiliser  for maximum grain yield of wheat for a range of copper deficinet soil types in the Newdegate- lake Grace district.

Key messages

5 Experiments started in 1980's.

  1. 3 sources of Cu (sulfate (25%); oxychloride (52%)  & chelate (EDTA 15% Cu) at 7 levels of Cu
  2. Applied at 2 growth stages of wheat grown at 5 sites
  3. 1 kg Cu/ha rsuilted in maximum yield of 2.5 t/ha (summarised over 5 experiemnts in each particular year.
  4. 1-2kg of Cu sulfate required for maximum yield on severely deficient soil (.5 tha nil Cu ; 2.5 t/ha adequate Cu)
  5. Little foliage damage if sprayed under cool, cloudy conditions. Warm sunny conditions increased leaf damage and decreased response to foliar sprays.
  6. Chelate Cu always resukted in the highest yield per quantity of Cu while oxychloride always rsulted in the lowest grain yield per quantity of Cu .For example 100 g Cu/ha of chelate , 200 g as sulfate and 4000g oxychloride Cu for maximumgrain yield.
  7. Sprays at 6th leaf were higher than late boot.
  8. Cool condition for leaf absorption.
  9. Results replicated over several season and soil types.
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

Method

Crop type Cereal (Grain): Wheat
Treatment type(s)
  • Fertiliser: Application Method
Trial type Experimental
Trial design Replicated

Lake Grace -Newdegate 1985

Sowing machinery

12 run sowing machine 

Sow date Not specified
Harvest date Not specified
Plot size 2.1m x 50m
Plot replication 4
Fertiliser

400 kg Plain super/ha; Zn @ 2.0 kg/ha.

Sources of Copper were Cu sulfate (25% Cu), copper oxychloride (52% Cu) and Cu chelate (EDTA, 15% Cu).

 

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
Lake Grace -Newdegate, WA Not specified
Derived trial site soil information
Australian Soil Classification Source: ASRIS
Trial site Soil order
Lake Grace -Newdegate, WA Hydrosol
National soil grid Source: CSIRO/TERN
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

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Climate

Derived climate information

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

Lake Grace -Newdegate WA

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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.

Trial report and links


No trial reports or attachments found


Trial last modified: 21-05-2019 20:15pm AEST