Polysul-Fit
Polysulphate calculator
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Archived App (Last seen on 31 May 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
Want your crops to be healthy, strong and productive? Use the Polysul-Fit Polysulphate calculator to work out the correct application rate of this remarkable fertilizer to meet your crops’ nutritional needs for healthy, strong and productive growth.
Polysulphate fertilizer - which is natural polyhalite - is a soluble, easily-absorbed, and cost effective answer to crop nutrition. It contains four key plant nutrients: sulphur, potassium, magnesium, and calcium.
To use the app, simply enter your crop, type of cropping, and soil type and the Polysul-Fit Polysulphate Calculator instantly gives you the recommended Polysulphate application rate.
Find out more about Polysulphate, a natural, multi-nutrient mineral, and how its unique combination of macronutrients can benefit your crops by visiting the Polysulphate website (www.polysulphate.com).
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What's New in Polysul
1.0.1
January 11, 2018
This app has been updated by Apple to display the Apple Watch app icon. Optional registration
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