Nigel Wilhelm, Sjaan Davey
|Contributor||South Australian Research and Development Institute|
Site 2, Edillilie, SA
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)
From this trial:
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|
More Profit from Crop Nutrition
This project was linked closely with a similar project in WA project code DAW00239, managed by Dr Ross Brennan, DPIRD.
|Other trial partners||Patrick Head and Cummins Ag Services|
|Sow date||Not specified|
|Harvest date||Not specified|
|Plot size||Not specified|
District rates of basal fertilisers
|@T1: Z14||@T2: Z30|
||Grain yield (t/ha)||Soil Copper in top 10cm (mg DTPA Cu/kg)||Tissue Copper (mg Cu/kg)||Tissue Copper (mg Cu/kg)|
|1||█ Nil Control||0.8||0.16||1.6||-|
|1||█ Granular fertiliser at seeding (2kg Cu/ha)||0.3||1.2||-|
|1||█ Granular fertiliser at seeding (1kg Cu/ha)||0.28||1.4||-|
|2||█ Coated fert product (0.5 kg Cu/ha)||0.86||1.6||-|
|2||█ Fluid banded near seed row (1kg Cu/ha)||1.22||1.9||-|
|2||█ Foliar spray sulphate (90g Cu/ha)||2.05||-||-|
|3||█ Foliar spray sulphate (100g Cu/ha)||1.93||-||-|
|3||█ Foliar spray chelate (90g Cu/ha)||1.73||-||-|
|3||█ Foliar spray sulphate x 2 (90 + 90g Cu/ha)||3.16||-||2.5|
|4||█ Luxury management (2kg + 90g + 1.5kg Cu/ha)||2.98||2||-|
|4||█ Nil Control: Residual A||0.59||1.6||1.5|
|4||█ Nil Control: Residual B||0.3||-||-|
|5||█ Fluid banded near seed row (0.09kg Cu/ha)||0.69||1.3||-|
|5||█ Fluid banded near seed row (0.19kg Cu/ha)||0.98||2||-|
|5||█ Fluid banded near seed row (0.38kg Cu/ha)||0.67||1.8||-|
|6||█ Fluid banded near seed row (0.56kg Cu/ha)||1.11||2.5||-|
|6||█ Fluid banded near seed row (1.1kg Cu/ha)||1.41||2.4||-|