Effect of Foliar Application of Methanol and Chelated Zinc on the Quantities and Qualities Yield of Marigold (Calendula officinalis L.)

For investigation of the effect of foliar application of methanol and chelated zinc on quantities and qualities of marigold medicinal plant factorial experiment based on randomized complete block design with three replicate was conducted. The first factor was foliar application of methanol at 0 (control), 10, 20, 30 and 40% concentrations and second factor was foliar application of chelated zinc at 0 (control), 0.5 and 1 gr per thousand. The results of variance analysis showed that methanol has significant effect (P<0.01) on measured indices except arytenoids. Also, chelated zinc has significant effect (P<0.01) on the number of capitol, flavonoids, essential oil content and gaiol percentage and has significant effect at P<0.01 on plant height and carotenoids. Also, the interaction of methanol with chelated zinc was not significant effect on measured indices. According to the mean comparison foliar application of methanol and chelated zinc increased measured indices, so that 30% methanol and 0.5 gr per thousand has most effect on measured indices.