Emmette from Summit, Ms writes
I have a solo backpack sprayer.
Per the Hi-Yield 2,4-D Selective Weed Killer product label, for treating pennywort or other aquatic weeds: Use 1 gallon of this product in 25 gallons of water per acre. Uniform coverage is essential. Avoid submerging plants after treatment. Application should be made when leaves are fully developed above water line and plants are actively growing. Treatment of aquatic weeds can result in oxygen loss, so only treat 1/2 to 1/3 of the area at a time, and wait at least 21 days between applications in order to avoid fish suffocation.
Answer last updated on: 03/22/2017