| http://www.w3.org/ns/prov#value | - For example, fertilizers, micro-nutrients (such as zinc, copper, boron, and seaweed extracts), vitamins, humic acid, sea kelp, sugars, amino acids, plant growth promoters and hormones, pH-regulators such as lime and sulphur, salt binding agents such as gypsum (calcium sulphate) and adsorbents such as activated carbon can be incorporated into the medium either by formulating with the adhesive or by
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