Although we do not carry the Atrazine 4L, we do see the differences in the two products. Hi-Yield Atrazine Weed Killer 4% Atrazine where Atrazine 4L has 42.2%. Also the Atrazine 4L is labeled for use with corn crops where Hi-Yield Atrazine Weed Killer is not.
We wouldn’t recommend using Hi-Yield Atrazine prior to laying St Augustine sod. The label states that it should only be applied to turf that isn’t under stress, and mentions that it could stunt the growth of or yellow sprigged turf
Hi-Yield Atrazine Weed Killer is not labeled to control Bermuda grass in St. Augustine. Unfortunately, because Bermuda and St. Augustine grasses are so closely related, there is nothing that will kill the Bermuda without harming the St. Augustine as well. It is typically recommended to spot treat the Bermuda with a non-selective glyhposate product and kill it directly, and then replant St. Augustine in those areas if necessary.
Hi-Yield Atrazine Weed Killer contains 4% of the active ingredient Atrazine.
Unfortunately, there is little that can be done to counteract the effects once Hi-Yield Atrazine has been applied to a grass species other than Centipede or St. Augustine grass. You can replant, but the product label states that if you are replanting with anything other than Centipede or St. Augustine, the minimum wait time for replanting is 12 months. You may wish to contact the manufacturer directly to see if they have any other recommendations. You can reach VPG/Hi-Yield by calling 855-270-4776.
Applications should be made only with a hand pump sprayer equipped with a flat fan spray tip. Correct calibration of the sprayer is essential. Overdosing will cause severe plant injury and or death to the desired turf. Hi-Yield Atrazine Weed Killer should not be used in a hose end sprayer. Please review the product label to be sure this product fits your needs.
Applications of Hi-Yield Atrazine Weed Killer would need to be kept outside of the dripline of any nut trees.
Hi-Yield Atrazine Weed Killer is not labeled for use on Bermuda grass, so we would not recommend this application.
Hi-Yield Atrazine Weed Killer is not specifically labeled for chamberbitter. This is a very stubborn weed. Pre emergent applications with a product like Isoxaben 75 WG have proven to be the most effective way to control this weed. Research from several extension pages do suggest the use of Atrazine for this weed, but we are not able to guarantee its effectiveness. Also keep in mind given how persistent and pesky chamberbitter is, there is no one and done solution to take care of the weed so repeat application may have to take place in order to fully kill the invaders.
Hi-Yield Atrazine Weed Killer can be applied early in the morning before temperatures reach 90 degrees if it's expected to get this hot on the day of application. You just do not want to apply during the time of high temperature because your desirable turfgrass is under more stress in high heat.
Yes, you may spot treat with Hi-Yield Atrazine Weed Killer.
Yes, Hi-Yield Atrazine Weed Killer is labeled to control/supress lespedeza. You will mix 4.3 fl. oz. per gallon of water to treat a 500 sq. ft. area.
No, this product does not come in a granular form.
Hi Yield Atrazine Weed Killer can only be used on St. Augustine and Centipede grasses.
Hi-Yield Atrazine Weed Killer is not specifically labeled for chamberbitter. This is a very stubborn weed. Preemergent applications with a product like Isoxaben 75 WG have proven to be the most effective way to control this weed. Research from several extension pages do suggest the use of Atrazine for this weed, but we are not able to guarantee its effectiveness. Also keep in mind given how persistent and pesky chamberbitter is, there is no one and done solution to take care of the weed so repeat applications may be necessary.
Hi-Yield Atrazine Weed Killer can be applied on established Centipede lawns for weed control or in dormant or growing seasons.
Hi-Yield Atrazine Weed Killer is not labeled to treat Torpedo grass. Torpedo Grass is hard to treat. We are not aware of a product that will treat Torpedo and not harm St. Augustine. You may want to consider spot treating with RoundUp.
Hi-Yield Atrazine Weed Killer could damage or kill crepe myrtles. It should not be used over rooting area of trees, ornamentals, vegetables or other desirable plants other than indicated established turfgrasses.
Hi Yield Atrazine Weed Killer is rainfast six hours after application. The mix rate is 4.4 fl oz per gallon of water. The rate for an acre would be 400 fl oz in at least 25 gallons of water.