Phytochemicals from <i>Eucalyptus camaldulensis</i> and <i>Coleus barbatus</i> Control <i>Eragrostis plana</i> in Horticulture

<i>Eragrostis plana</i> is an invasive plant in horticulture that is extremely difficult to control. The use of chemical herbicides causes weed resistance and contamination of crops. Therefore, leaf extracts obtained from <i>E. camaldulensis</i>, <i>C. barbatus</i>...

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Main Authors: Bianca Motta Dolianitis, Renan Pfeifenberg, Viviane Dal-Souto Frescura, Marcus Vinícius Tres, Giovani Leone Zabot
Format: Article
Language:English
Published: MDPI AG 2025-03-01
Series:Horticulturae
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Online Access:https://www.mdpi.com/2311-7524/11/3/291
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Summary:<i>Eragrostis plana</i> is an invasive plant in horticulture that is extremely difficult to control. The use of chemical herbicides causes weed resistance and contamination of crops. Therefore, leaf extracts obtained from <i>E. camaldulensis</i>, <i>C. barbatus</i>, and <i>L. leucocephala</i> were evaluated in the control of this weed. The extracts were obtained from leaves by infusion, pressurized liquid extraction, and ultrasound-assisted extraction using water or ethanol as solvents, which are green methods. The phytochemicals from <i>E. camaldulensis</i> and <i>C. barbatus</i> reduced the germination and growth of the weed, reaching up to 97% inhibition of germination, 52% reduction in shoot length, and 46% reduction in root length for the germinated seeds.
ISSN:2311-7524