Pramitol 25E is not labeled to control horseweed/marestail.
You could potentially use a hose-end sprayer to apply Pramitol 25E if you can correctly calibrate your sprayer and avoid any potential contact or runoff to any desirable plants. For susceptible perennial grasses, you would use 12 - 18 oz per 1,000 square feet in sufficient water. For hard-to-kill perennial weeds and grasses, you would use 22 - 29.4 oz. per 1,000 sq ft. It is most important to use the correct amount of herbicide for the area you are treating and then using sufficient water or rainfall to irrigate it into the soil than it is to use a specific amount per gallon of water. Keep in mind that Pramitol 25E is generally noncorrosive to equipment, but may cause swelling or more rapid deterioration of hoses and fittings containing natural rubber. Please refer to the product label for complete application instructions.
You would want either to water in the Pramitol 25E right away or use a higher volume of water to spray it so that it gets into the soil. Waiting several months to water the product into the ground will greatly reduce the residual activity of this product. You should use 50-100 gallons of water per Acre, or at least 1-3 gallons of water per 1000 sq ft. Additional rainfall or irrigation will improve results. Please refer to the product label for complete application instructions.
Pramitol 25E is mixed at the rate of 8 ounces per gallon of water at the lowest dilution, up to 32 ounces per gallon for harder to kill brush. Please see the product label for complete application instructions.
Once a soil sterilizer like Pramitol 25E has been applied there is not much you can do to reverse the effects other than to dig out any dirt that has the product in it and replace it with clean untreated soil and replant grass in those areas. Watering it likely pushed it into the soil more as this product is designed to be watered in after application to make it work appropriately and last a long time in the soil. Since its main function is to prevent new grasses and plants in general from coming up from the soil, its slower to work on anything already growing on the surface. It could cause the grass to die in a few days or in a week or two depending on how heavily it was applied. Since a lower use rate of 2oz per gallon was used it may not last as long as if higher rates were applied. You may want to contact a lawn company and see if they have any flowable charcoal they can come spray on the lawn to try and break down the chemical or if they feel it would do any good.
Pramitol 25E is mixed at the rate of 8 ounces per gallon of water at the lowest dilution, up to 32 ounces per gallon for harder to kill brush. Please see the product label for complete application instructions.
You could potentially mix Pramitol with other post-emergent herbicides such as Roundup/glyphosate and 2,4-D if you have a lot of existing plants that you are needing to kill. Just be sure you are using the correct application rates for each product. You may not need the 2,4-D unless you have a lot of tougher broadleaf weeds. Keep in mind that the Pramitol needs to get down into the soil but you want to post-emergent herbicides to be able to dry on the target leaf surfaces. It may be helpful for you to lightly water the area before spraying so that the soil can absorb the Pramitol more readily.
Pramitol 25E is not specifically labeled for bamboo elimination. Any glyphosate product may or may not do the job right off to control the Bamboo. Since bamboo roots go so deep, you would need to apply either a product like Rodeo/Roundup QuikPro at the highest rates directly to the fresh cut stump of the bamboo after you cut it down level to the ground, or use a brush and stump killer undiluted directly on the fresh stump.
You only want to mix up what you plan to use at a time and not keep it stored in a tank sprayer for more than 24-48 hours max if you want it to carry the same potency. Products like Pramitol 25E, if used correctly should only have to be reapplied every year so if you are finding you are having to treat more frequently in areas you used it in, we would suggest using a little higher ratio per 1000 sq/ft and use a higher water volume over that whole area to ensure it is getting deep enough in the soil to set up an adequate long lasting barrier.
Pramitol 25E can be applied anytime target weeds are actively growing or just before seed germination when the ground is not frozen, and temperatures are not at or below freezing. Pramitol can prevent growth for up to 1 year.
Pramitol 25E can damage the roots of trees and extreme caution should be used when applying this product.
No, you want to be careful to apply Pramitol 25E in a way which it would not drift or runoff into the river bank. Keep at least a ten foot barrier between your application with Pramitol 25E and the river bank, and be sure not to apply the product when it is windy or when precipitation is expected within 24 hours.
You can view the detailed toxicology for aquatic life on pages 4-5 of the product's MSDS here.
Pramitol 25E actually states on the product label: For faster top-kill of existing vegetation, apply Pramitol 25E in diesel oil, fuel oil, or weed oil. Use oils at rates of 100 - 200 gals./A. Tall, dense vegetation, such as johnsongrass, will generally require 150 or more gals. of oil per acre for thorough coverage.
Pramitol 25E is not specifically labeled for bamboo elimination. Any glyphosate product may or may not do the job right off to control the Bamboo. Since bamboo roots go so deep, you would need to apply either a product like Rodeo/Roundup QuikPro at the highest rates directly to the fresh cut stump of the bamboo after you cut it down level to the ground, or use a brush and stump killer undiluted directly on the fresh stump.
Although Pramitol 25E has considerable activity through foliar contact, much of its activity is through roots; therefore, its effectiveness is dependent on rainfall to move it into the root zone. Very dry soil conditions and lack of sufficient rainfall may result in poor weed control. Be sure to use the recommended amount of water per the product label.
When applying Pramitol 25E to a small area with backpack or pump-up sprayers with capacities of 1 - 3 gals., calibrate the sprayer so that 1 gal. of water covers 500 sq. ft. If green foliage is present, part or all of the water can be substituted with oil to provide burndown. This would be recommended instead of mixing with Roundup.
Pramitol 25E is toxic to fish. The product label recommends that it not be applied directly to water, areas where surface water is present, where runoff into a body of water may occur, or in intertidal areas lower than the high water mark.
Pramitol 25E does not contain glyphosate. You can add a glyphosate product for better kill of existing plants.
There is no restriction on the Pramitol 25E product label regarding playgrounds, it would be used only in areas where complete control of all vegetation is desired. As long as children are out of the area during application until dry it should be ok to use.
You could potentially use a hose-end sprayer to apply Pramitol 25E if you can correctly calibrate your sprayer and avoid any potential contact or runoff to any desirable plants. For susceptible perennial grasses, you would use 12 - 18 oz per 1,000 square feet in sufficient water. For hard-to-kill perennial weeds and grasses, you would use 22 - 29.4 oz. per 1,000 sq ft. It is most important to use the correct amount of herbicide for the area you are treating and then using sufficient water or rainfall to irrigate it into the soil than it is to use a specific amount per gallon of water. Keep in mind that Pramitol 25E is generally noncorrosive to equipment, but may cause swelling or more rapid deterioration of hoses and fittings containing natural rubber. Please refer to the product label for complete application instructions.
We are not awareof anything that would cause Pramitol 25E to damage pipes in the ground when used as directed. Unfortunately, we do not know where you can purchase the product locally, but we are able to ship it to Hawaii.
