الفهرس 
Effect of different bio fertilizers and soil media on growth and chemical composition of eucalyptus spp in North Africa
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Abstract
Two pot experiments were conducted at the nursery of the Ornamental Horticulture, Department, Horticulture Research Institute, A.R.C, Giza, Egypt. to study the effect of different Bio fertilizers (Azotobacter chroococcum, Bacillus circulans) and Arbuscular mycorrhizal fungi(AMF) and soil media (sand, sand:caly, clay) and their interactions on growth, chemical compositions, microbiological parameters and enzymatic activity in rhizosphere of the river red gum (Eucalyptus camaldulensis, Dehnh) seedlings during two consecutive seasons of 2011 and 2012. The results in both seasons pointed out that the mixture of Azotobacter chroococcum, Bacillus circulans and Arbuscular mycorrhizal fungi(AMF) and/or clay and sand+clay significantly increased plant height, stem diameter, number of leaves, leaf area, fresh and dry weights of shoots and roots, chlorophyll a and b, total carbohydrates, N, P and K% compared with the seedlings grown in sand medium and un-incoulated control