Trial on Potatoes – Scotland, United Kingdom
GranuPotasse® provides one of the mildest forms of the important plant nutrient, potassium, along with sulfur.
- Contains a minimum of 50% K2O (41.5% K) and typically 45% SO3 (18% sulfur)
- Ensures optimum uptake of both potassium and sulfur (as sulfate)
- Equal performance in alkaline or acidic soils
- Virtually no chloride
- Extremely low salt index
- A nitrogen-free source of potassium
Cooperation with: Glasson
Type of application: soil application
Parameters measured: yield and dry matter
Goal: Study the effect of replacing MOP by SOP in seed potato
300 kg/ha K2O was applied in the spring. The standard practice is the application of MOP. MOP has been compared with Granupotasse.
300 kg/ha K2O broadcast have been applied on March 19, 2019 for the MOP and March 23 for the SOP.
Size 40-55 mm
|Total yield ton/ha ||Dry matter %|
|MOP ||39.8 ||51.8 ||19.4|
Higher yield with the application of Granupotasse and a higher dry matter content.
Treatment block: 600 kg Granupotasse/ha. Potassium form makes the difference.
MOP = £147/ha
Granupotasse = £300/ha
With an additional 6.8 ton/ha seed potatoes (40-55mm) and grower returns of £250/ton for seed potatoes, the grower makes £1,700/ha more by spending £153/ha extra cost. This will give an additional value of £1,547/ha (= 1,759 EUR/ha) extra revenue for farmer.
GranuPotasse Potato Trial UK 2019.pdf