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Copy link Barley Trial with Polysulphate
27.9
North East England, UK 2021
27.9
Key Conclusions
Adding Polysulphate to barley’s fertilizer strategy increased uptake of nitrogen by 27.9%, phosphorus by 41%, potassium by 21%, and sulfur by 21%. Barley crop carbon content also increased by 15.5% over the control.
Objective
To evaluate the performance of Polysulphate on autumn planted barley crops.
Sulfur levels in UK soils are very low which can affect the NUE of barley. This trial examined NUE (nutrient use efficiency), exploring whether sulfur application improves nitrogen uptake over the winter period, potentially reducing field losses.
Trial Details
Trial station
North East England, UK
Crop
Barley
Product
Granular Polysulphate
Assessments
Nutrient uptake before the first nitrogen application in the spring, and carbon content
Treatments
Each field at the 6 different locations was split into two 6 ha plots, the control and the Polysulphate treatment. Phosphate starter fertilizer (ICL TSP) was applied to all plots. All fertilizers were applied before drilling the crop.
| Polysulphate | SO3 | K2O | MgO | CaO | |
|---|---|---|---|---|---|
| kg/ha | kg/ha | kg/ha | kg/ha | kg/ha | |
| Control | 0 | 0 | 0 | 0 | 0 |
| +Polysulphate | 100 | 48 | 14 | 6 | 17 |
Treatments
Each field at the 6 different locations was split into two 6 ha plots, the control and the Polysulphate treatment. Phosphate starter fertilizer (ICL TSP) was applied to all plots. All fertilizers were applied before drilling the crop.
| Polysulphate | SO3 | K2O | MgO | CaO | |
|---|---|---|---|---|---|
| kg/ha | kg/ha | kg/ha | kg/ha | kg/ha | |
| Control | 0 | 0 | 0 | 0 | 0 |
| +Polysulphate | 100 | 48 | 14 | 6 | 17 |
Results
The barley crops treated with Polysulphate showed the following responses:
- Nitrogen uptake increased by 27.9%
- Phosphorus uptake increased by 41%
- 21% improvement in potassium uptake, and 21% in sulfur uptake, 2 of the nutrients provided by Polysulphate
- An increase in carbon content of 15.5% over the control.
Polysulphate increased nitrogen uptake by an average of 27.9% across the trial plots.
Polysulphate increased phosphorus uptake by an average of 41% across the trial plots.
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