Need to know how much Roundup to apply.?

The application rate of Roundup Weed and Grass Killer is 6 ounces per 300 square feet.





I need to apply Roundup to 2 gallons of water. I am aware this is not supposed to be an aquatic herbicide- this is for a science fair project.





How much Roundup do I need to apply if I am only using 2 gallons of water?Need to know how much Roundup to apply.?
This is less scientific than you may think ...the idea that 6 oz will work for 300 sq ft is proposed over the lifetime of the Herbicide....Since your applying it to an aquatic vegetation one must consider the ability of the water to wash away the concentration to where its no longer potent...I have found that when applying a spray to an aquatic plant that adding a liquid soap product (i use dial liquid) to the herbicide will break down the natural oil that makes the water weed resilient to the water....answering your question though if contact is made with the leaf pat of the plant before the water washes it away your solution will be 6oz for 300 sq ft ..just like the land based plants....If your using premix that is and if your using the concentrate read the instructions 6 oz is way to much for 2 gallons I seem to remember the amount of 1.5oz per gallon.....Also remember when you use roundup in the water it deoxigenates so the flora and fauna both get a little set back..One last thing about roundup..If your using roundup in the water and you have moss that you want along the shore ...(some are beneficial) roundup is not very selective...It will attack these as well along with any broad leaf lawn grass that is there as well.....Good luck with this...from the E..Need to know how much Roundup to apply.?
I'm a little confused on your question. You're wanting to ';apply'; the roundup to water - are you spraying it on the surface, or mixing it into the water? Are you trying to kill an aquatic weed or ?? If you are just spraying the tops of an aquatic weed (as in water hyacinth or something that grows above the surface) then the same directions would apply - 6 ounces would cover the surface of 300 sq. feet, so you would only spray enough to cover the surface of 2 gallons. You wouldn't necessarily change anything that way. If you're wanting to mix it in WITH the water (as in to kill a weed below the surface of the water), then that's a whole different thing because the dilution rate would be huge. Need more info. on what you're doing exactly.
I use commercial grade Round-up, and the rate is 3 oz. / gallon water. Rodeo is Round-up for aquatics use. It has the same application rate, and same active ingredient.