Effect of citrine and active dry yeast as foliar application on growth, yield and some chemical constituents of roselle plants (Hibiscus sabdariffa L.)grown under a saline calcareous soil [electronic resource].

Includes references.

A field experiments were carried out during the two successive seasons of 2007 and 2008 in the Experimental Farm at Demo ( a newly reclaimed soil with a moderately salinity level), Faculty of Agriculture, Fayoum University to investigate the effect of foliar application of citrine (15% citric acid, 2% Fe, 2% Mn and 2% Zn) at the rates of 0, 0.3, 0.4,- and 0.5% and active dry yeast at the rates of 0, 1, 1.5 and 2 g / L, each alone or together on growth, yield and some chemical constituents of roselle plants (Hibiscus sabdariffa L. var. sabdariffa). The studied growth characters were plant height, number of branches/ plant, number of leaves/plant, leaf area and dry weight of leaves /plant, as well as yield and its components, (i.e. number of flowers /plant, fresh and dry weights of sepals/ plant, yield of dry sepals/fed). The chemical constituents of leaves included total chlorophyll, carotenoids & antioxidants enzyme activity and those of sepals, i.e., pH, anthocyanin and total carbohydrates. Key words: Calcareous soil, roselle, salinity hazard, citrine and active dry yeast.

Summary in Arabic.

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