Managing micronutrient deficiencies in cropping systems. Copper at Edillilie

2016

Research organisaton
Funding source

Trial details

Researcher(s) Nigel Wilhelm, Sjaan Davey
Year(s) 2016
Contributor South Australian Research and Development Institute
Trial location(s) Site 2, Edillilie, SA
Managing micronutrient deficiencies in cropping systems. Copper at Edillilie locations
Aims

To asses the effect on crop yield of multiple rates and application strategies of micronutrient fertilizers in soils deficient in the target micronutrients (copper, zinc, manganese, boron and molybdenum)

Key messages

From this trial:

  • Soil applications from 2015 were poorly effective at improving grain yield. Foliar applications of sulphate increased yield by about 1t/ha. Best yield increases of more than 2t/ha were achieved with a combination of soil and foliar applications. 

From the whole project:

  • Current guidelines are still relevant and effective for TE management.
  • Some current interpretations of soil tests are causing issues - the suggested levels to avoid deficiencies are much higher in some lab reports than is our experience from field trials. These are creating false impressions of the extent and severity of Zn and Cu deficiencies.
  • No evidence of a major increase in the incidence or severity of TE deficiencies in the cropping zones.
  • Fluid delivery of TEs at seeding is a valid management strategy but rates of the target TE need to be the same as used with compounded fertilisers.
  • Generally, all sources of foliar TE were equally effective.
Lead research organisation South Australian Research and Development Institute
Host research organisation N/A
Trial funding source GRDC DAS00146
Related program More Profit from Crop Nutrition
Acknowledgments

This project was linked closely with a similar project in WA project code DAW00239, managed by Dr Ross Brennan, DPIRD.


Other trial partners Not specified

Method

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

Edillilie 2016

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication 4
Fertiliser

District rates of basal fertilisers

 

Download results

Trial results Table 1

@T1: Z14 @T2: Z30
# Treatment 1
Treatment 2
Grain yield (t/ha) Tissue Copper (mg Cu/kg) Tissue Copper (mg Cu/kg)
1 Granular fertiliser at seeding (2kg Cu/ha) Seed as nil 0.838 1.99 0.99
1 Granular fertiliser at seeding (1kg Cu/ha) Seed as nil 0.965 1.72 -
1 Coated fert product Seed as nil 1.28 2.03 1.11
2 Fluid banded near seed row (1kg Cu/ha) Seed as nil 1.703 1.99 0.94
2 Foliar spray sulphate (90g Cu/ha) Seed as nil 1.205 1.81 -
2 Foliar spray sulphate (100g Cu/ha) Seed as nil + late sulphate (90g Cu/ha) 2.073 - -
3 Foliar spray chelate (90g Cu/ha) Seed as nil 1.082 1.87 -
3 Foliar spray sulphate x 2 (90 + 90g Cu/ha) Seed as nil 1.901 1.89 -
3 Nil Control Seed as nil + late sulphate (90g Cu/ha) 2.355 - -
4 Luxury management (2kg + 90g + 1.5kg Cu/ha) Seed as nil 2.145 1.96 1.14
4 Nil Control: Residual A Seed as nil (control) 1.26 2.26 0.96
4 Nil Control: Residual B Granular fertliser at seeding (1kg Cu/ha) + early foliar sulphate (90g Cu/ha) + late foliar sulphate (90g Cu/ha) 3.639 2.53 1.84
5 Fluid banded near seed row (0.09kg Cu/ha) Seed as nil 1.367 - -
5 Fluid banded near seed row (0.19kg Cu/ha) Seed as nil 1.263 2.08 -
5 Fluid banded near seed row (0.38kg Cu/ha) Seed as nil 0.824 - -
6 Fluid banded near seed row (0.56kg Cu/ha) Seed as nil 1.191 - -
6 Fluid banded near seed row (1.1kg Cu/ha) Fluid at seeding (1kg Cu/ha) + early foliar sulphate (90g Cu/ha) + late foliar sulphate (90g Cu/ha) 3.376 4.07 2.85
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Grain yield t/ha


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Tissue Copper mg Cu/kg


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Trial last modified: 09-10-2019 14:09pm AEST