Chemicals containing organic agents for use in agriculture, horticulture and forestry, except fungicides, herbicides, insecticides and parasiticides; plant growing media, namely, plant nutrients, plant food and plant growth regulating preparations; manures; composts; natural fertilizers and chemical fertilizers; soil improving agents; biological agents other than for medical or veterinary purposes, namely, biological preparations for use in horticulture, forestry, gardening; chemical products...