BLENDING

A large number of blended fertilizers are produced from basic fertilizer products (e.g. ammonium nitrate, urea, and mono-ammonium phosphate) and natural materials (e.g. rock phosphates. potassium chloride). All such materials are not necessarily compatible with each other and some may produce undesirable effects when mixed with others. These undesirable effects can include, for example, chemical reaction(s) and physical effects (e.g. stickiness which can cause handling difficulties, moisture migration giving rise to caking tendency). EFMA has reviewed existing information and has produced this guidance with a wider scope by including most commonly used blending materials.