To control subsurface weeds growth Propeller calls for 100 to 400 ppb in the water column. In order to achieve this amount a dose of 1 to 4 pounds per acre averaging 4 feet deep is recommended. Average rates of application equate to 4lb per acre averaging 4 feet deep.

This dosage is normally used to control and kill the following weeds:

Apply uniformly to ensure sufficient contact time. Propeller Herbicide breaks down rapidly, and uniform coverage is essential to maximize efficacy.

Apply

Propeller Herbicide at a rate that will produce an initial concentration of 100 to 400 ppb (of active ingredient flumioxazin) in the water column. Apply in a sufficient volume of water per acre to ensure adequate contact with target weeds to determine amount of Propeller Herbicide needed to achieve desired concentration at different water depths. Use higher concentrations when weed biomass is heavy and/or weeds are more mature and topped out. Do not exceed 400 ppb of the active ingredient flumioxazin during any one application. When making applications to water bodies greater than 7 feet deep, do not exceed 14.8 pounds of product per surface acre. Buffer spray solution to pH less than 7.0

Propeller Herbicide will control weeds and algae listed below when applied as a broadcast spray with appropriate equipment. For best results, apply Propeller Herbicide to the foliage of actively growing weeds. Floating and Emerged Weeds Common Name Scientific Name Alligator Weed Alternanthera philoxeroides Frog’s-bit Limnobium spongia Water Fern Salvinia spp. Water Lettuce Pistia stratiotes Water Pennywort Hydrocotyle spp. Filamentous algae Pithophora Filamentous algae Cladophora

Surface Application

Apply Propeller Herbicide as a broadcast spray at 6 to 12 ounces of formulated product per acre. Apply in a sufficient volume of water per acre to ensure adequate coverage. Buffer spray solution to pH less than 7.0 Application of Propeller Herbicide during early morning hours may enhance weed control. When applying to densely packed actively growing surface weeds, ensure adequate coverage. A second application may be required for complete control under these conditions. Rapid decomposition of vegetation resulting from herbicide treatment can result in loss of oxygen in water. A sudden decrease in dissolved oxygen can result in fish suffocation. If aquatic vegetation is dense, treat floating surface weeds in sections to avoid a rapid decrease in dissolved oxygen. Treat up to half of the water body and wait 10 to 14 days before treating the remaining area. Do not re-treat the same section of water within 28 days of application. Propeller Herbicide may be tank mixed with 2,4-D, diquat or other registered foliar applied herbicides for enhanced control of floating and emergent weeds. Consult a manufacturer’s label for specific rate restrictions and weeds controlled. Always follow the most restrictive label restrictions and precautions for all products used when making an application involving tank mixes.