M.Jaber,J . "The Effect of Ricinus Communis and Eucalyptus sp. Extractions and Trichoderma harzianum on the Soil Fungi Fusarium sp and Rhizoctonia sp in the Laboratory and Field", Al-Qadisiyah Journal For Agriculture Sciences, 6, 1, 2016, 144-156. doi: 10.33794/qjas.2016.110170