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Aquatic Weed Contol John Madsen Revised:  March 2021 In many ways, aquatic weeds are similar to terrestrial or land weeds. There are annuals and perennials. Many flower and produce seed, others propagate only asexually. Some produce tubers or winter buds, ...
Control Options for Emergent and Aquatic Weeds Wise water management is necessary if aquatic vegetation control is to be more than temporary. Management must begin by evaluating all uses of a given body of water. Chemical, biological, and physical factors ...
Algae in Lakes, Ponds, Reservoirs, and Irrigation Channels copper sulfate pentahydrate2 Rate 0.25 to 2 ppm suspended in burlap bags, poured directly into water of irrigation channels, injected into the water column, or applied over water surface of ...
Submersed Weeds in Flowing Canals and Ditches acrolein (Magnacide H) Rate Up to 8 ppm Time Apply when weed growth is no more than 4 to 6 inches tall. Remarks Repeat treatments every 3 to 4 weeks during the remainder of the season. Caution A restricted-use ...
Submersed Weeds in Non-flowing Canals and Ditches 2,4-D (Hardball) Rate 2.5 to 6.2 gal/a-ft as concentrate. Time Apply when plants are actively growing. Remarks For use in quiescent or slow moving waters; apply to moving bodies of water only while ...
Submersed Weeds in Lakes and Ponds 2,4-D (Hardball) Rate 2.5 to 6.2 gal/a-ft as concentrate. Time Apply when plants are actively growing. Remarks For use in quiescent or slow-moving waters; apply to moving bodies of water only while traveling upstream. No ...
Emergent Weeds in Marshes 2,4-D (Hardball) Rate 2.3 gal/a in minimum spray volume of 5 gal mix/a with surface applications; 2.3 gal/a through standard boom system with minimum of 5 gal/a of spray mix. Time Apply in spring or early summer; if needed, a ...
Emergent Weeds along Drainage Ditches 2,4-D (Hardball) Rate 1.15 gal/a (2 lb ae/a) with 100 to 400 GPA spray mixture with power sprayers Time Apply in spring or early summer; if needed, a second treatment may be applied before September. Remarks ...
Emergent Weeds along Irrigation Ditches 2,4-D dimethylamine salt (DMA 4IVM, Base Camp and others) Rate 2 to 4 pints/a product in 20 to 100 gal water Time Apply in spring or early summer when weeds appear, but prior to bud or bloom. Remarks Repeat as ...
Broadleaf, Floating, Emergent, Marginal, and Bank Weeds of Ponds and Lakes 2,4-D dimethylamine salt (DMA 4 IVM, Base Camp and others) Rate 2 to 4 pints/a product in 20 to 100 gal/a Time Apply in spring or early summer when aquatic weeds appear, prior to ...