The effect of silicon foliar application on the development of Season ornamental plants. Part II: Argyranthemum frutescens 'Blazer Rose', Xerochrysum bracteatum 'Gold', Osteospermum ecklonis 'Grande Pink Blush' and Gaura lindheimeri 'Corinas Choice'

Abstract

Recent research has proved that supplementary application of silicon, involved in plant tolerance against many stress factors, positively influences plant development improving the quality of ornamental plants. A two-factorial experiment involved four cultivars of ornamental plants: <i>Argyranthemum frutescens</i> 'Blazer Rose', <i>Xerochrysum bracteatum</i> 'Gold', <i>Osteospermum ecklonis</i> 'Grande Pink Blush', and <i>Gaura lindheimeri</i> 'Corinas Choice' The first experimental factor was the concentration of Actisil preparation being an equivalent of 60, 120, and 180 mg Si×dm^-3, applied three times by spraying, while the second one was the type of medium: peat substrate and peat substrate with sand. Actisil had a beneficial effect on the number of lateral shoots in all plants. The highest number of buds and inflorescences was determined in <i>Xerochrysum</i> and <i>Osteospermum</i> plants sprayed with 0.3% Actisil, and 0.2% Actisil in case of Argyranthemum and Gaura. The effect of medium type on plant growth depended on plant species. <i>Argyranthemum</i> and <i>Osteospermum</i> plants cultivated in the medium with sand showed inhibited growth, although medium type did not affect the growth of <i>Xerochrysum</i>

Effect of pre harvest foliar spray of growth regulators on pre and post harvest parameters in ornamental sunflower genotype M-17R

“…Hence, application of growth regulators play significant role in modifying growth of plants. Similar result with regard to GA 3 to promote maximum plant height was reported by Syamal et al (1990) Leshem (1992); Herrera and Benedetto (1992), Dutta et al (1993); Kamenidou (2005), Spitzer et al (2011) andDorajirao (2010).Sodium silicate @ 250 ppm (4508.77 cm 2 ) registered maximum plant spread at 60 DAS, followed by Chlormequat chloride @ 500 ppm (4209.49 cm 2 ).Silicon spray was earlier reported by Wroblewska and Debicz (2011) to increase plant spread in ornamental plants by stimulating synthates. Foliar application of GA 3 @ 150 ppm (25.00) produced highest number of leaves which was at par with Sodium silicate @ 250 ppm, GA 3 @ 200 ppm and GA 3 @ 250 ppm recording 24.87, 24.80 and 24.67 leaves respectively.…”

The Effects of Foliar Sprays with Different Silicon Compounds

“…The results showed an increase in the number of lateral shoots in all ornamental plant varieties in relation to the increase in product concentration. All Chol-sSA sprays increased the number of buds and flowers or inflorescences, with an increased flower diameter also dependent on the concentration of the spray [ 67 ].…”

Silicon dioxide-nanoparticle nutrition mitigates salinity in gerbera by modulating ion accumulation and antioxidants

“…There is a lot of literature about the beneficial effects of silicon on growth, yield and quality of fruits such as strawberry (Wang and Galetta, 1998) and also some of ornamentals including gerbera (Savvas et al, 2002), sun flower (Conceiḉao et al, 2019), Rosa hybrida (Savvas et al, 2007) and Zinnia elegans (Kamenidou et al, 2010). For example, spray with silicon compounds in marguerite daisy (Argyranthemum frutescens), strawflower (Xerochysum bracteatum), African daisy (Osteospermum ecklonis) and guara (Guara lindheimeri) increased the number of lateral shoots, bud and flower number and/or inflorescence number (Wróblewska and Dębicz, 2011).…”