If you're using pro-roundup or agriculture level roundup mix 1 Cup of roundup to 5 gallons of water. This will give you a mixture between 1% and 2% which will kill most undesirables and anything else that picks up the spray.
Mike, you are right that your mixture will kill most undesirables. The mixture is too strong, but it isn't the end of the world. I would recommend mixing 50 ml of concentrated round up to 2.5 litres of water. Add a little dish soap to make it stick to vegetation. Or said in a different way, (4 units of 50 ml) {20 ml} per 10 liters). If you are using US units that would be 1.7 ounces to 2.9 gallons or may as well just say 3 gallons. Even though most do not like the metric system, it is much better when doing mixtures, etc. Don't get confussed with British Imperial gallons as the are a wee bit larger in volume. However, if you do find you made a mistake, don't worry about it as we are not mixing material for nuclear use. Try to make enough to meet your needs. I have found that leaving this mixture in a sprayer will over time become high in viscosity and foul up your sprayer. It is a pain the rear end to unplug the hoses.Mike, you are right that your mixture will kill most undesirables. The mixture is too strong, but it isn't the end of the world. I would recommend mixing 50 ml of concentrated round up to 2.5 litres of water. Add a little dish soap to make it stick to vegetation. Or said in a different way, (4 units of 50 ml) {20 ml} per 10 liters). If you are using US units that would be 1.7 ounces to 2.9 gallons or may as well just say 3 gallons. Even though most do not like the metric system, it is much better when doing mixtures, etc. Don't get confussed with British Imperial gallons as the are a wee bit larger in volume. However, if you do find you made a mistake, don't worry about it as we are not mixing material for nuclear use. Try to make enough to meet your needs. I have found that leaving this mixture in a sprayer will over time become high in viscosity and foul up your sprayer. It is a pain the rear end to unplug the hoses.
This depends on the amount of the active ingredient in the roundup. Follow the label instructions. Ex. if the instruction is for one gallon of water multiply that amount X 5. A tip for mixing roundup-it will still work just fine to decrease the amount of concentrate by 10-15 percent. Note: If the roundup has been sitting around a few years, it may not have the sufactant already added, in which case a tablespoon of dishwhashing liquid per gallon of water will make it work much better.
Answers & Comments
If you're using pro-roundup or agriculture level roundup mix 1 Cup of roundup to 5 gallons of water. This will give you a mixture between 1% and 2% which will kill most undesirables and anything else that picks up the spray.
Mike, you are right that your mixture will kill most undesirables. The mixture is too strong, but it isn't the end of the world. I would recommend mixing 50 ml of concentrated round up to 2.5 litres of water. Add a little dish soap to make it stick to vegetation. Or said in a different way, (4 units of 50 ml) {20 ml} per 10 liters). If you are using US units that would be 1.7 ounces to 2.9 gallons or may as well just say 3 gallons. Even though most do not like the metric system, it is much better when doing mixtures, etc. Don't get confussed with British Imperial gallons as the are a wee bit larger in volume. However, if you do find you made a mistake, don't worry about it as we are not mixing material for nuclear use. Try to make enough to meet your needs. I have found that leaving this mixture in a sprayer will over time become high in viscosity and foul up your sprayer. It is a pain the rear end to unplug the hoses.
This depends on the amount of the active ingredient in the roundup. Follow the label instructions. Ex. if the instruction is for one gallon of water multiply that amount X 5. A tip for mixing roundup-it will still work just fine to decrease the amount of concentrate by 10-15 percent. Note: If the roundup has been sitting around a few years, it may not have the sufactant already added, in which case a tablespoon of dishwhashing liquid per gallon of water will make it work much better.