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SOP – Chlorine free source of Potassium plus Sulfate for quality crop production
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Sopib News

The sun goes down on SOPIB
After more than 20 years actively promoting the benefits of sulphate of potash (SOP) fertilizer, the Sulphate of Potash Information Board (SOPIB) will ...
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Now available! Get all relevant Information on Principles and Practices of K and S Fertilization
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