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. | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 10, Volume 23, Issue 2, July 2009, Page 108-122 PDF (473.97 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2009.197065 | ||||
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| Author | ||||
| Sameer, S. S. El-Ganaini | ||||
| Agricl. Botany Dept., Fac. Agric., Fayoum Univ. | ||||
| Abstract | ||||
| 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. The obtained results indicated that, all studied characters were affected positively by the foliar application of citrine and active dry yeast at all applied different rates either alone or together (except, pH values that were decreased by the applied treatments). The best results were obtained by the application of the highest rates of citrine (0. 5%) or active dry yeast (2 g / L) alone or together. At the same time, the oxidative enzyme activities such as peroxidase and catalase were recorded the highest values when spraying with the highest rates of citrine or active dry yeast alone or together. In view of these results, it could be recommended that foliar spraying roselle plants (Hibiscus sabdariffa L. var. sabdariffa) with citrine or active dry yeast should be counteracted the adverse conditions, particularly at salinity condition of the soil, and consequently producing an economic yield. | ||||
| Keywords | ||||
| Calcareous soil; roselle; salinity hazard; citrine and active dry yeast | ||||
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