Effective precision farming relies on high-quality controlled-release coated urea (CRCU) fertilizer, which hinges on optimal coating film properties and precise nutrient-release kinetics. The development of CRCU fertilizers is hindered by the lack of a coating material that addresses all the issues associated with uncoated urea, including inconsistent nutrient release profiles, coating uniformity, biodegradability and environmental impact. Moreover, the study of coating uniformity, mechanical properties, thickness, release kinetics and their dependence on the fluidized bed process variables, bears a great deal of significance in CRCU process optimization. To overcome this, research is needed to synthesize biodegradable coating materials, such as chemically modified lignin-palm stearin coating solutions, and optimize the fluidized bed coating process to achieve uniform coating and tailored release properties. Understanding the complex relationships between CRCU process and response variables, optimizing the coating process and comprehending the transport properties of nitrogren from the CRCU membrane can help create high-quality granular fertilizers with eco-friendly protection and nitrogen release kinetics, ultimately supporting sustainable agriculture. Therefore, my research explores the application chemically modified lignin-palm stearin as coating material for producing CRCU fertilizer using a Wurster fluidized bed reactor.