Open Access Research Paper Views (240) Download (5) Allelopathic effect of Arta (Calligonum Comosum L, Her) extract on seed germination of arfaj (Rhanterium epapposum Oliv) Modhi Al-Otaibi Int. J. Agron. Agri. Res.5( 3), 75-79, September 2014. Key: Allelopathic effectCalligonumcomosumRhanteriumepapposum Details