Silicon spray affect floricultural traits and leaf elemental nutrient concentrations of Rose 'Beverly Watson'.

Silicon (Si) is looked upon as a non-essential nutrient whose positive effects have been proved on most plant species. This study explored the impact of various types and rates of Si on some plant traits of rose (Rosa hybrida) 'Beverly Watson' in a factorial experiment based on a Randomized Complete Design with two treatments and three replications. Three Si sources (calcium silicate, potassium silicate, and sodium silicate) were used as foliar application in five rates (0, 50, 100, 150, and 200 mg L−1) during 10 wks. It was found that Si treatment improved flowering stem length and diameter, petal thickness, flower fresh and dry weight, and days to flower senescence, but it reduced days to full flower opening. Likewise, foliar application of Si increased leaf N, P, K, Ca, and Si content. Si at lower rates improved leaf Cu, Mn, and Fe content, but it reduced them at higher rates. [ABSTRACT FROM AUTHOR]

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