Chemical preparations for soil treatment; chemical products for conditioning the soil; chemical products for the conditioning of soil; products for soil conditioning; soil amendment agents (other than sterilising); soil conditioners (other than sterilising); soil conditioning preparations for enhancing the growth of horticultural products; soil conditioning preparations for regulating the growth of agricultural products; soil enrichment chemicals; soil improvement substances; soil improvers; soil improving material; soil-conditioning chemicals; soil oxygenation chemicals; soil oxygenation materials