Effect of Magnetic Water, Organic and Bio-fertilizers on Growth Characteristics and Essential Oil Yield of Moldavian Balm (Dracocephalum Moldavica L.)

The study was carried out to evaluate the effects of magnetic water, organic and chemical fertilizers on growth characteristics and yield of Moldavian balm (Dracocephalum moldavica L.).

This experiment was conducted as a factorial based on a randomized complete block design with 21 treatments and three replications at research farm of the faculty of agriculture, university of Tabriz, Iran in 2016.The first factor was magnetic water (0, 290, and 430 milli Tesla) and the second factor was fertilizer treatment (control, 100% chemical fertilizers+NPK fertilizer, 50% chemical fertilizer+bio-fertilizer, Penergetic P, 50% chemical fertilizer+Penergetic P, 50% chemical fertilizer +organic wood fertilizer with 2 and 4 tons/ha).

Increasing the intensity of the magnetic improved the transverse growth of the plant, leaf chlorophyll index, dry weight of upper flowering parts, and essential oil yield of Moldavian balm. The interaction effect of magnetic water fertilizer treatments was significant on number of branch per plant, dry weight of upper parts, essential oil percentage and yield. The highest dry weight of upper flowering parts (7668.70 kg/ha) was obtained in 100% chemical fertilizer and magnetic water of 430 milliTesla. The highest essential oil yield (16.59 kg/ha) was obtained in organic wood fertilizer in 2 tons ha and without using magnetic water.

Bio-fertilizer and organic fertilizers in combination with 50% of chemical fertilizers coupled with magnetic water of 430 milliTesla could be recommended to improve the growth traits, qualitative and quantitative yield of Moldavian balm in the field condition.