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Lemon balm (Melissa officinalis L.) is a perennial herbaceous plant in the mint family Lamiaceae. It has leaves with a mild lemon scent similar to mint. The leaves are used as a herb, in teas, and also as a flavouring. Lemon balm tea, the essential oil, and the extract are used in traditional and alternative medicine. Amendments can be used for foliar treatments of plants with purpose of plant nutrition in order to improve growth and development of plant, and accordingly enhancing the yield and quality. Therefore, the goal of present research was to determine the effect of foliar treatments of biostimulants and amendments on mineral composition of lemon balm. A field trial was set up in 2018 in Zagreb on 3-years-old lemon balm plantation according to the Complete Random Block Design method with six treatments (EkoBooster 2, Lord Grow, Ecogreen, Kristalon Green, Drin, Control). The highest mineral values are achieved by using Lord Grow treatment. However, overall determined mineral values in the lemon balm leaves on dry matter basis are as follows: 0.24-0.29 % P, 2.43-3.22 % K, 1.70- 2.09 % Ca, 0.41-0.52 % Mg, 341-493 mg Fe/kg, 19.57- 25.19 mg Zn/kg, 48.5-99.5 mg Mn/kg and 10.33- 14.50 mg Cu/kg. |
