Abstract
Ornamental plants are cultivated worldwide. Chrysanthemum is classified as one of the most important cut and potted flowers in most of the countries. The consumer’s expectation is to find small–compact, and full of inflorescences plants. To meet these demands, growers are tending to use plant growth retardants. Three Chrysanthemum indicum L. varieties (‘Smola White’, ‘Arber’ and ‘Vienna White’) were assessed by using four plant growth regulators (PP–Bumper 250 EC; CC–Stabilan SL; MP–Medax Top SC; and PD–Toprex SC). Results indicate that treated plants show significant decrease in the assessed parameters, although in some cases growth could be a variety–dependent factor. It can also be concluded that retardants inhibit chrysanthemum growth. PD treatments greatly inhibited the growth of the plant, and also had a negative effect on inflorescences. In conclusion, the present work strengthens the possibility of using retardants as plant growth inhibitors in Chrysanthemum cultivation.
Highlights
Flower cultivation is widely spread through the whole world and represents a significant economic income
At the beginning of the experiment, the substrate in all pots did not show any significant differences in pH or electrical conductivity (EC), varying between the average values of 5.60 (SD = 0.001) and 0.50 (SD = 0.003)
It was found that retardants do not affect the shape of the Significant inhibition determined between in all tested leaves, but the leaf area is reduced compared to non-treated bud diameter was significantlyplants increased under PP
Summary
Flower cultivation is widely spread through the whole world and represents a significant economic income. The ornamental plant industry embraces the cultivation and trade of cut greens and flowers, potted and bedding flowers, and house–plants [1,2]. Ornamental plants are cultivated in many regions around the world. Europe being an important production and consumption center for floriculture. The main producer countries are the Netherlands, Germany, Belgium, France, Spain [3,4,5], and Romania with smaller areas of ornamental plant production. Producers from smaller countries, in order to cope with the big flower industries, are more less forced to use fertilizers, pesticides, growth retardants, to produce a higher flower quality to lure the consumers with a better product
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