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Essential oils (EOs) extracted from various medicinal plants offer a promising alternative to non-selective chemical substances commonly employed in conventional agriculture. Their chemical composition includes several classes of chemical compounds with beneficial properties, such as monoterpenes, sesquiterpenes, and phenylpropanoids, which can selectively control microbiological elements in soil and plants. The aim of the present study was to evaluate the essential oils and floral waters obtained from a new variety of marigold (Tagetes patula L., fam. Asteraceae, “Nanuk” variety) across various parameters, including biochemical characterization using GC-MS, antioxidant activity evaluated under three methods (DPPH, ABTS, FRAP), antimicrobial properties (for three G− bacteria: Perctobacterium carotovorum, Pseudomonas marginalis, Pseudomonas syringae and against three phytopathogenic fungi: Rhizoctonia solani, Fusarium oxysporum, Botrytis cinerea), and insecticidal activity. The results showed that when applied in high concentrations, marigold essential oil has a potential bactericidal effect on P. carotovorum, as well as a potential fungicidal effect on B. cinerea.
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Tudora et al. (2024) studied this question.
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