Construction applications for Agricultural residues Concrete slab rienforced with natural rebars Flax yarn under Microscop Laminate reinforced with Flax fiber Natural Yarn Reinforced Polymer (NYRP) Composite bars Performance light weight concrete slab rienforced with natural rebars Performance normal concrete slab rienforced with natural rebars Tensile strength vs Volume fraction for NYRP bars Development of naturally reinforced composite materials of various applications. Provision of supplementry cementitious materials agricultural wastes.