Effect of soil media [sandy clay, clay sand, mixture] on growth of Casuarina equisetifolia L. and Cupressus sempervirens L. seedlings [in Egypt]

africa biological development casuarina casuarinaceae clay soils conifers crops cupressaceae cupressus developmental stages dicotyledons economic plants egypt environment forest trees growth gymnosperms lithological soil types north africa ornamental plants ornamental trees physiological functions physiology plant developmental stages plants sandy soils seedlings site factors soil types structural crops textural soil types timber trees trees verticillatae