To study the effect of different concentrations of Iron, Copper, Manganese and Boron foliar application in marigold on yield and essence production, the investigation was performed in complete randomized block design with 3 replications. Each micronutrient applied in four concentrations (0, 200, 400, 600 ppm). The experiment was repeated at two growth periods (2012 and 2013) in southwestern Iran in a sandy clay soil. Objectives of this study were to determine the effects of foliar Fe2+, Cu2+, Mn2+and H2Bo3- applications on length of stem, leaf and root, number of flower, fresh and dry matter of root and shoot, stem diameter, fresh and dry weight of flower, carotenoids, flavonoids, polyphenols, essence percentage of marigold. Results showed that Fe2+, Cu2+, Mn2+and H2Bo3- applications significantly increased the measured characters. In two year, the greatest number of harvested flower (harvest1: 3500, harvest2: 6500, harvest3: 6000), length of stem (36 cm), shoot dry matter (0.39gr), root dry matter (0.38 gr) produced by combination of 400 ppm of Fe2+, Cu2+, Mn2+and H2Bo3-. The most of poly phenols, carotenoids and flavonoids was 25%, 42%, 25.5% and 27%, 40%, 24.5% in primary and secondary year respectively. The most weight of dry flower, number of flower per plant was 14.8 gr, 16.8 gr and 10.9, 13.9 in 1st and 2nd years respectively, were made by combination of 400 ppm of all micronutrients (Fe3Cu3Mn3B3). These results showed that applications of micronutrients can affect the growth and yield of marigold, especially when the plant is grown in alkaline soils, and in this the 400 ppm concentrations of micronutrients were the best. Perhaps, the physiological basis of this effect is immobilization of micronutrients in this soil.
کلید واژگان :Carotenoids Flavonoids Marigold Micronutrients Polyphenols
ارزش ریالی : 300000 ریال
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