This book presents the advancement of coating materials technology especially in agriculture, particularly for fertilizers. Fertilizers are a critical component in meeting rising demands and ensuring global food security. A new generation of fertilizers made by coating granules with biopolymers address these issues. Coating in agriculture is an important area in research for a more sustainable future. Many examples and instances from existing research and related research gaps are discussed. It includes applications of composites as fertilizer's coating, advantages and disadvantages of fertilizer coating from composites, applications of bacteria in composite, applications of bacteria in fertilizer industry as well as the common techniques of coating fertilizers with drying process.