Effect of Foliar Application of Fe, Zn, Cu and Mn on Yield and Essential Oils of Borago officinalis

摘要

Borago is one of the plants of Boraginaceae family. To study the effect of Fe, Zn, Cuand Mn foliar applications in Borago on yield and essence production, theinvestigations were performed in complete randomized block design with 3replications at 2011 and 2012 in Shahrekord, Iran. Results showed that Fe, Zn, Cuand Mn had the significant effectiveness in percentage of essence, DPPH,carotenoids, flavonoids, phenols, weight of fresh and dry root matter, number offlower, and weight of dry and fresh of flower and weight of dry and fresh shootmatter. Combinations of 400ppm of Fe, Zn, Cu and Mn (Fe3Zn3Cu3Mn3) producedthe greatest amounts in most of measured characters. The most of phenols,carotenoids and flavonoids was 75, 0.6, 0.6 mg/100 gr flower dry matter and 81, 0.8,0.62 mg/100 gr flower dry matter in primary and secondary year respectively. Themost weight of dry flower and number of flower per plant were 14.8, 16.8 gr and10.9, 13.9 in 1st and 2nd year and made by Fe3Zn3Cu3Mn3 treatment.