Field Research & Agronomy
SUM19-24: Potassium Strategies for wheat, Goomalling
Aim
To assess the response of wheat to applied potassium (K) rates, sources and placement.
Trial Details
Location: Haywood Bird Farms, Goomalling
Trial Size: 23 treatments x 3 reps = 69 plots.
Soil Type: Gravelly sandy loam
Crop Sown: Scepter wheat (dry sown), 90kg/ha, 13/05/2019
Results
Key Messages
- Goomalling experienced a decile 5 growing season rainfall in 2019 with three significant dry periods during the season. This rainfall pattern impacted yield potential in this trial.
- Plant biomass was significantly influenced by K placement, with top-dressing or a combination of banding and top dressing increasing biomass.
- There was a significant yield response to applied K under these rainfall conditions.
- At rates greater than 24kg K/ha, banded K had a lower yield trend compared to other K strategies.
- No significant difference between K supplied as MOP or SOP was found.
- Higher rates of MOP and SOP banded may have been affected by high rates of product struggling to pass through the air-seeder at sowing.
For further information about this trial get in touch with local Area Manager Brayden Noble, bnoble@summitfertz.com.au, 0417 490 047.