Managing micronutrient deficiencies in cropping systems. Zinc at Dandaloo

2015

Research organisatons
Funding source
South Australian Research and Development Institute D R Agriculture Pty Ltd

Trial details

Researcher(s) Nigel Wilhelm, Sjaan Davey
Year(s) 2015
Contributor South Australian Research and Development Institute
Trial location(s) Dandaloo, NSW
Managing micronutrient deficiencies in cropping systems. Zinc at Dandaloo 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:

  • No crop response to the addition of Zinc. Soil and plant tests not in the deficient range.

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 D R Agriculture Pty Ltd
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

Dandaloo 2015

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
Soil Zinc in top 10cm (mg DTPA Zn/kg) Grain yield (kg/ha) Tissue Zinc (mg Zn/kg) Tissue Zinc (mg Zn/kg)
1 Nil Control 0.27 344 21.75 14.75
1 Seed dressing (120g Zn/ha) 258 19.75 -
1 Granular fertiliser at seeding (1kg Zn/ha) 285 22.75 15
2 Granular fertiliser at seeding (0.5kg Zn/ha) 253 20.75 -
2 Coated MAP product (0.5kg Zn/ha) 354 22 -
2 Fluid banded at seeding (1.0 kg Zn / ha) 247 25.75 -
3 Foliar spray sulphate (330g Zn/ha) 267 - 15
3 Foliar spray sulphate elemental = chelate (300g Zn/ha) 264 - 13.75
3 Foliar spray chelate (300g Zn/ha) 308 - 14.5
4 Foliar spray sulphate x 2 (330g + 330g Zn/ha) 253 - -
4 Seed dressing + early foliar (120g + 330g Zn/ha) 386 - 13.75
4 Luxury management (120g Zn + 1kg + 1.5kg + 330g Zn/ha) 265 30.75 15.75
5 Nil Control: Residual A 260 20.75 14.25
5 Nil Control: Residual B 315 - -
5 Fluid banded at seeding (0.13 kg Zn/ha) 264 - -
6 Fluid banded at seeding (0.25 kg Zn/ha) 305 - -
6 Fluid banded at seeding (0.5 kg Zn/ha) 201 - -
6 Fluid banded at seeding (0.75 kg Zn/ha) 247 - -
7 Fluid banded at seeding (1.5 kg Zn/ha) 277 - -
7 NIL - No Fert at all 348 - -
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Grain yield kg/ha


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Soil Zinc in top 10cm mg DTPA Zn/kg


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Tissue Zinc mg Zn/kg


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