Managing micronutrient deficiencies in cropping systems. Manganese at Streaky Bay

2015

Research organisaton
Funding source

Trial details

Researcher(s) Nigel Wilhelm, Sjaan Davey
Year(s) 2015
Contributor South Australian Research and Development Institute
Trial location(s) Site 9, Streaky Bay, SA
Managing micronutrient deficiencies in cropping systems. Manganese at Streaky Bay 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 Manganese. 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 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 Barley
Treatment type(s)
  • Fertiliser
  • Fertiliser: Rate
  • Fertiliser: Timing
  • Fertiliser: Application
  • Fertiliser: Method
Trial type Experimental
Trial design Replicated

Streaky Bay 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
Grain yield (t/ha) Tissue Manganese (mg Mn/kg) Tissue Manganese (mg Mn/kg)
1 Seed dressing (70g Mn/ha) 1.1 25 -
1 Granular fertiliser at seeding (3kg Mn/ha) 1.1 24.3 21.3
1 Granular fertiliser at seeding (1.5kg Mn/ha) 1.2 41.5 -
2 Coated fert product 1.1 25.3 -
2 Fluid banded near seed row (1.5kg Mn/ha) 1.3 27.8 -
2 Foliar spray sulphate (1.02kg Mn/ha) 1.2 - 30
3 Foliar spray sulphate chelate (600g Mn/ha) 1.1 - 42.3
3 Foliar spray chelate (600g Mn/ha) 1.3 25 37.5
3 Foliar spray sulphate (1.02kg Mn/ha) 1.2 - -
4 Seed dressing + early foliar (0.07kg Mn + 1.02kg Mn/ha) 1.1 - 30
4 Nil Control 1.1 24 21
4 Luxury management (0.07 + 3 + 2.25 + 1.02 kg Mn/ha) 1.2 29.3 33
5 Nil Control: Residual A 1.1 - 21.8
5 Nil Control: Residual B 1.2 - -
5 Fluid banded at seed row (0.19kg Mn / ha) 1.2 26.5 -
6 Fluid banded at seed row (0.38kg Mn / ha) 1.2 25.5 -
6 Fluid banded at seed row (0.75 kg Mn/ ha) 1.3 27 -
6 Fluid banded at seed row (1.13kg Mn / ha) 1.2 28 -
7 Fluid banded at seed row (2.25kg Mn / ha) 1.3 26.5 22.5
7
7
8
8
8
9
9
9
10
10
10
11
11
11
12
12
12
13
13
13
14
14
14
15
15
15
16
16
16
17
17
17
18
18
18
19
19
19

Grain yield t/ha


Loading

Tissue Manganese mg Mn/kg


Loading



CC BY
Individual Trial Project data and information and OFT metadata are licensed under a Creative Commons Attribution 4.0 International License.
The data and information accessed through OFT may also be subject to Terms of Use specified by the Trial Contributor,
in which case the Terms of Use of a Trial Contributor take precedence over other information provided on OFT.
Trial last modified: 09-10-2019 14:10pm AEST