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Article

The Effects of Algaecides and Herbicides on a Nuisance Microcystis wesenbergii-Dominated Bloom

Agronomy Department, Fort Lauderdale Research and Education Center, University of Florida—IFAS, 3205 College Avenue, Davie, FL 33314, USA
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Academic Editor: George Arhonditsis
Water 2022, 14(11), 1739; https://doi.org/10.3390/w14111739
Received: 12 May 2022 / Revised: 23 May 2022 / Accepted: 26 May 2022 / Published: 28 May 2022
(This article belongs to the Section Water Quality and Contamination)
Microcystis-dominated cyanobacterial harmful algal blooms (cyanoHABs) are a reoccurring problem globally, resulting in widespread economic and health impacts. As public awareness of the risks of blooms increases, there is an urgent need for studies on both short-term and long-term management of cyanoHABs. In order to provide science-based best management practices and treatment options, we tested various concentrations and combinations of USEPA-registered algaecides and herbicides on a Microcystis wesenbergii-dominated bloom. The bloom material was exposed to fifteen different algaecides, herbicides, or combinations, using four different concentrations. Cell abundance and morphology as well as microscopic analyses were undertaken at the time of collection and 72 h post-treatment. Overall, the effectiveness of the chemicals varied with the most efficacious treatments being SeClear®, and a combination of Hydrothol® 191 and GreenClean® Liquid 5.0, both of which resulted in a significant decrease at all tested concentrations after 72 h. Interestingly, Microcystis wesenbergii is more resistant to algaecides than M. aeruginosa. Results from this study provide valuable data for treating cyanoHABs and show the varied efficacy of different algaecidal formulations. View Full-Text
Keywords: cyanobacteria; Microcystis; harmful algal blooms; management; treatment cyanobacteria; Microcystis; harmful algal blooms; management; treatment
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MDPI and ACS Style

Lefler, F.W.; Berthold, D.E.; Barbosa, M.; Laughinghouse, H.D., IV. The Effects of Algaecides and Herbicides on a Nuisance Microcystis wesenbergii-Dominated Bloom. Water 2022, 14, 1739. https://doi.org/10.3390/w14111739

AMA Style

Lefler FW, Berthold DE, Barbosa M, Laughinghouse HD IV. The Effects of Algaecides and Herbicides on a Nuisance Microcystis wesenbergii-Dominated Bloom. Water. 2022; 14(11):1739. https://doi.org/10.3390/w14111739

Chicago/Turabian Style

Lefler, Forrest W., David E. Berthold, Maximiliano Barbosa, and H. Dail Laughinghouse IV. 2022. "The Effects of Algaecides and Herbicides on a Nuisance Microcystis wesenbergii-Dominated Bloom" Water 14, no. 11: 1739. https://doi.org/10.3390/w14111739

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