Dependence of the Concentration of Bioactive Compounds in <i>Origanum vulgare</i> on Chemical Properties of the Soil
Asta Klimienė | Ramutis Klimas | Hanna Shutava | Liuda Razmuvienė
The aim of this study was to determine the dependence of the total phenolic, flavonoid, and extractive content in extracts of <i>Origanum vulgare</i> L. on the soil pH, humus, total nitrogen (N<sub>total</sub>), and plant-available/mobile phosphorus (P<sub>2</sub>O<sub>5</sub>), as well as potassium (K<sub>2</sub>O), total calcium (Ca), magnesium (Mg), and sodium (Na) concentrations. Experimental fields were formed in four locations in Lithuania. Soil and perennial <i>O. vulgare</i> samples were taken at three sites of each experimental field. A total of 12 samples of soil and 12 samples of the tested plant were collected and analyzed. The concentrations of bioactive compounds in plants are significantly (<i>p</i> < 0.05–0.01) affected by some chemical properties of the soil: the total phenolic content was reliably correlated with the soil pH, N<sub>total</sub>, Ca, Mg, and P<sub>2</sub>O<sub>5</sub>; the flavonoid content was correlated with the soil P<sub>2</sub>O<sub>5</sub>, K<sub>2</sub>O, Mg, and Na; and the extractive content was correlated with the soil humus, N<sub>total</sub>, and Na. The obtained results are useful for the development of the commercial cultivation of <i>O. vulgare</i>.
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