That is why the usage of several agricultural wastes in thermoplastic matrix as a filler and/or a reinforcer were investigated. In these studies, the potential of wheat straw (Mengeloglu and Karakus 2008b; Sain and Panthapulakkal 2006), rice husk (Yang et al. 2007), sunflower stalk and corn stalk (Ashori and Nourbakhsh 2009), and barley husk (Bledzki et al. 2010) were determined. There is a growing demand for finding new raw materials as filler for wood plastic composites (WPC).