Effect of foliar application with some microelements on growth, flowering and chemical composition of crinum asiaticum, thumb plant [electronic resource].

Includes references.

Two field expenments were carried out at the Faculty of Agriculture at Mosblohor, Beoha University on Crinum asialicum plant during the two successive seasons of 2004 and 2005 to study the response this plant to foliar spray with manganese at rates of 100, 150 and 200 ppm, boron al rates of 50,75 and 100 ppm, combined with zinc at rates of 100 and 200 ppm, on vegetative growth, flowering, bulb parameters and chemical composition. The obtained results were summarized as follows: All applied concentrations of microelements significantly increased number, fresh and dry weights of leaves/plant. The best results were obtained from treatments of Zn at 200 ppm combined with Mn or B at the highest concentrations. All applied concentrations of microelements improved the measurement of flowering i.e: number of days to full bloommg, number, diameter, fresh weight of flowers/flowering stalk and vase life of slower (days). The highest mean values in this concern were obtained by using the highest concentration of microelements especially Zn at 200 ppm combined with Mn at the same concentration. With regard to flowering stalk paramete's ie. length, diameter, number, fresh and dry weights of flowering stalk/plant, results showed that Zn at 200 ppm combined with Mn at 200 ppm gave the best results in lhis concern. In addition all tested applications of microelements increased chemical content in leaves and bulbs such as total nitrogen, phosphorous, potassium and total carbohydrates. Also total alkaloids in leaves and bulbs were increased by using all treatments especially Zn combined with Mn at 200 ppm concentration for each. The best results of number, diameter, fresh and dry weights of bulbs/plant were gained by spraying plants with the high concentration of microelements especially zinc at 200 ppm combined with manganese at the same concentration comparing with control plants. It is recommended to spray zinc combined with manganese (each at 200 ppm) to obtain the best plant growth, flowering, bulbs productivity and chemical composition ofCrinum asialicum.

Summary in Arabic.

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