Effective Identification of Nitrogen Fertilizer Demand for Paddy Cultivation Using UAVs. - Rusiri Illesinghe; Shayan Wickrama Arachchi; Heshan Kavikarage; Anupama Karunarathna; Kasun Karunanayaka; Thilina Halloluwa; Upul Anuradha Rathnayake (IECON, 2023)