Section 22, The National Fertilizer Regulations, 2020.

(1) When ingredients of some fertilizer that are used onspecific crops or in specific applications are deemed to be harmful to the growth of the plant, the maximum content of the potentially harmful substances shall be stated on the label as follows - (a) when urea is labeled to be used as a foliar spray the biuret content shall be limited to 1.5 percent; or (b) when a fertilizer is labeled to be used on crops that are extremely sensitive to chloride, such as tobacco, that fertilizer shall have a maximum of 2.5 percent of chlorine. (2) A manufacturer, importer or distributor of fertilizer shall include a caution statement on the label of any product that contains micronutrients - (a) when there is evidence that the micronutrients in excess of a particular percentage may be harmful to certain crops or grazing animals; or (b) where there is evidence that the micronutrients are in excess of a particular percentage may cause unusual environmental conditions. (3) When the content of harmful substances exceeds the maximum guarantee stated on the label, the fertilizer shall be deemed adulterated. 20 21 Information for harmful substances.