[1]
AL–Gebori , M.S. and AL – Zuhairi, I.F. 2009. Allelopathy effects for (Secale cereale L.) and (Brassicai nigra L.)in : 1-Inhibition of Rhizobium growth and nodulation of (Vica faba L.) . Diyala Agricultural Sciences Journal . 1, 2 (Dec. 2009), 1–5.