The effectiveness of the use of the main redox microelements (Zn and Cu) in the cultivation of common tansy on dark gray podzolized, medium loam on carbonate loess soil, for which a deficiency is observed in the vast majority of areas of Ukraine, has been established. These trace elements significantly increased the productivity of the culture compared to the control and the background (N32P32K32). The largest total biomass on average over the years of research (2020—2022) was observed under the influence of zinc, while the response of the culture to different levels of nutrition with this trace element approached the concentration dependence. With the background introduction of macronutrients, no increase in the accumulation of zinc and copper in tansy flowers was observed. In 2021, a statistically significant increase in zinc accumulation in flowers was on treatments Zn1 and Zn2. A corresponding increase in the levels of Cu accumulation in flowers was registered with increasing doses of its application. However, the maximum levels of copper content did not exceed 0.87 mg/kg, which is significantly lower than the levels of acceptable content in domestic and international regulatory documents. Therefore, feeding the medicinal plant common tansy with zinc and copper is important for increasing the productivity of the culture under the conditions of the production transfer to the Central part of Ukraine. At the same time, the levels of zinc and copper accumulation in Flores Tanaceti increase, which contributes to the improvement of product quality.
Keywords: Tanacetum vulgare L. Bernh., common tansy, productivity, zinc, copper
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