Yes, single super phosphate fertilizer can be used in organic farming, but it really need to meet the specific specifications and rules set by natural certification bodies. At Sanudo we can source approximately any fertilizer or commodity chemical from our world wide community of vetted suppliers. Ask for a quote https://singlesuperphosphatesspin58135.ltfblog.com/36518925/details-fiction-and-phosphoric-acid-cas-number-info