Physiologiacl studies on effect of foliar application of some micronutrients and ascorbic acid on tuberose "Polianthes tuberosa L.," plantes grown on a saline calcareous soil [electronic resource].

Includes references.

A filed experiment was conducted to study effect of foliar spray with some micronutrients (Fe, Zn, Mn and Cu) at three concentrations, i.e.,50, 100 and 150 mg/L for each or ascorbic acid at four concentrations, i.e.,100, 200, 300 and 400 mg/L added alone or together on vegetative growth, flowering, oil yield and some chemical constituents of tuberose (Polianthes tuberosa L.) plants grown on a saline calcareous soil.'The obtained data indicated that;- all growth parameters, i.e., leaf length, leaf area, number of leaves/plant, fresh weight of leaves, dry weight of leaves were significantly increased as a result of foliar spray with micronutrients and ascorbic acid as solely or combined treatments. In additions flowering traits, i.e., flower stalk length, number of florets /spike, spike length, fresh weight of spike, dry weight of spike and number of spike per plot exhibited pronounced increase. Moreover, bulb diameter, fresh weight of bulb, number of new bulblet/plant and essential oil percentage of florets were also increased. The maximum increases in the former parameters were resulted from using micronutrients at the rate of 150 mg/L and ascorbic acid at the rate of 300mg/L alone- or combined together.

Summary in Arabic.

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