Editing Elodea (section)

== Chemical control ==
Chemical methods are ineffective in eradicating Elodea – at best they only slow growth for a season or two.<ref>{{Cite web|title = Efficacy of Fluridone, Penoxsulam, and Bispyribac-sodium on Variable-leaf Milfoil|url = https://www.researchgate.net/publication/228961575|website = ResearchGate|access-date = 2015-08-26}}</ref> As Elodea spreads into new ecosystems, it experiences rapid growth for 5–6 years and then slows as soil nutrients are used up.<ref>{{Cite journal|title = Does competition for phosphate supply explain the invasion pattern of Elodea species?|journal = Water Research|date = 2005-09-01|issn = 0043-1354|pmid = 16026814|pages = 3385–3393|volume = 39|issue = 14|doi = 10.1016/j.watres.2005.05.036|first = Gabrielle|last = Thiébaut| bibcode=2005WatRe..39.3385T }}</ref> Elodea is threatening aquatic environments across Europe.<ref>{{Cite journal|title = Genetic diversity in three invasive clonal aquatic species in New Zealand|journal = BMC Genetics|date = 2010-06-18|issn = 1471-2156|pmc = 2902404|pmid = 20565861|pages = 52|volume = 11|doi = 10.1186/1471-2156-11-52|first1 = Carla|last1 = Lambertini|first2 = Tenna|last2 = Riis|first3 = Birgit|last3 = Olesen|first4 = John S|last4 = Clayton|first5 = Brian K|last5 = Sorrell|first6 = Hans|last6 = Brix | doi-access=free }}</ref> Chemicals may be used in places that cause undue economic concerns, but very few aquatic herbicides are registered for aquatic use in the EU. [[Fluridone]], the most commonly used aquatic herbicide is highly effective against Hydrilla, but only marginally effective against Elodea, especially at lower use rates.<ref>{{Cite journal|title = Molecular evolution of herbicide resistance to phytoene desaturase inhibitors in Hydrilla verticillata and its potential use to generate herbicide-resistant crops|journal = Pest Management Science|date = 2005-03-01|issn = 1526-498X|pmid = 15668922|pages = 258–268|volume = 61|issue = 3|doi = 10.1002/ps.1022|first1 = Renée S.|last1 = Arias|first2 = Michael D.|last2 = Netherland|first3 = Brian E.|last3 = Scheffler|first4 = Atul|last4 = Puri|first5 = Franck E.|last5 = Dayan| s2cid=23469042 | url=https://digitalcommons.unl.edu/usdaarsfacpub/901 |url-access = subscription}}</ref><ref>{{Cite journal|title = Somatic mutation-mediated evolution of herbicide resistance in the nonindigenous invasive plant hydrilla (Hydrilla verticillata)|journal = Molecular Ecology|date = 2004-10-01|issn = 0962-1083|pmid = 15367135|pages = 3229–3237|volume = 13|issue = 10|doi = 10.1111/j.1365-294X.2004.02280.x|first1 = Albrecht|last1 = Michel|first2 = Renee S.|last2 = Arias|first3 = Brian E.|last3 = Scheffler|first4 = Stephen O.|last4 = Duke|first5 = Michael|last5 = Netherland|first6 = Franck E.|last6 = Dayan| bibcode=2004MolEc..13.3229M |s2cid = 19191358|url = https://naldc-legacy.nal.usda.gov/naldc/download.xhtml?id=12131&content=PDF|url-access = subscription}}{{Dead link|date=March 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref>{{Cite web|url=http://www.sepro.com/documents/Sonar-H4C_Label.pdf|title=SONAR H4C Label|last=Sepro|first=Corp|website=Sonar H4C Aquatic Herbicide|publisher=Sepro}}</ref>