Inhibitors; Nitrogen; Fertilisers consisting of compounds of nitrogen; Nitrogenous fertilisers; Chemical additives for fertilisers; Chemical preparations for agricultural purposes (other than fungicides, weedkillers, herbicides, insecticides and parasiticides); Chemical products for use in agriculture (other than fungicides, weedkillers, herbicides, insecticides, parasiticides); Chemicals used in agriculture; Liquid fertilisers; Liquid coatings (chemical); Protective coatings for agriculture (not fungicides, weedkillers, herbicides, insecticides or parasiticides)