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Copy link Polysulphate Barley Trial
27.9
North East England, UK 2021
27.9
Key Conclusions
Adding Polysulphate to barley’s fertiliser strategy increased uptake of nitrogen by 27.9%, phosphorus by 41%, potassium by 21%, and sulphur 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.
Sulphur levels in UK soils are very low which can affect the NUE of barley. This trial examined NUE (nutrient use efficiency), exploring whether sulphur application improves nitrogen uptake over the winter period, potentially reducing field losses.
Trial Details
Trial station
North East England, UK
Crop
Maize
Product
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 fertiliser (ICL TSP) was applied to all plots. All fertilisers 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 fertiliser (ICL TSP) was applied to all plots. All fertilisers 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 sulphur uptake, 2 of the nutrients provided by Polysulphate
- An increase in carbon content of 15.5% over the control.
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