Atrazine is mainly absorbed through the roots of weeds and then transported to the actively growing tips and leaves. Some absorption through leaves does occur. Atrazine kills the weed by inhibiting photosynthesis. This takes between 14 and 21 days .
What kind of weeds does atrazine kill?
Atrazine is effective against several common broadleaf weeds, such as Chickweed, Clover, Henbit, Pigweed, Ragweed, Doveweed, Oxalis, Betony, Gripeweed, and Morning Glory . Most pest grasses are also killed by Atrazine. This includes Foxtails, Annual Bluegrass, invasive Bermuda, Quackgrass, and Wire Grass.
What does atrazine kill?
Atrazine kills plants by disrupting photosynthesis . Photosynthesis— unique to green, living plants—happens when light energy is converted to chemical energy needed for food production. Simply put, when food production stops, plants eventually starve to death.
Does Atrazine kill Bermuda grass?
Atrazine kills actively growing Bermuda grass and kills Bermuda seeds as they sprout , making it an effective post-emergent and pre-emergent Bermuda killer. ... Apply Atrazine only in St. Augustine, Centipede Grass, or Zoysia yards. It will harm all other grasses.
When Should I spray my lawn atrazine?
In the soil, atrazine is an effective preemergence herbicide, preventing weeds from sprouting. Apply atrazine up to twice a year, making an application in November to control broadleaf winter weeds and annual grasses and again in January.
Will atrazine kill existing weeds?
Atrazine is a general-purpose herbicide that works as both a pre- and post-emergent. This means it will kill existing weeds and those that have yet to spring up from the ground.
Is atrazine safe to use?
Atrazine 4L Herbicide is safe to use around children and pets when applied according to the product label and when the product has been allowed to completely dry. Always wear the proper personal protective equipment when applying Atrazine 4L Herbicide.
How long will atrazine last?
How long does atrazine last? Once Atrazine is applied to the weed and soaks into the soil, it can remain there for several days to several months . In most cases, the atrazine will be present in the ground for one growing season.
Does atrazine need to be watered in?
You should apply Atrazine when the ground is dry . This product will control both emerged weeds and weeds from seeds. Rain or water within 2 or 3 days of application may decrease the effectiveness on emerged weeds. However, for the control of weeds from seeds, rainfall or watering is necess...
How long does it take atrazine to work?
How long it takes to see results from an application of Atrazine can vary somewhat, depending on what type of weeds you are targeting. Typically, Atrazine is a very slow-acting herbicide, and it can take up to 4 to 6 weeks after application to see desired results and death of the target weed.
Can you put atrazine on Bermuda grass?
Atrazine alone may provide some bermudagrass suppression but does not provide long-term control. Applications of ethofumesate with atrazine should be initiated during bermudagrass spring green up. Herbicide regimens that begin on actively growing bermudagrass in summer will likely be ineffective.
Does atrazine kill crabgrass?
Atrazine will suppress crabgrass , but it may not competely control it. The best time to treat for post-emergent control is when the weeds are young and actively growing, usually when temperatures are between about 55 and 85 degrees.
Can you spray atrazine on Bermuda grass?
Answer: Southern Ag Atrazine Weed Killer is formulated specifically for St Augustine and Centipede grasses only and should not be used on Bermuda grass . We do carry a full line of selective herbicides of which many are labeled for use on Bermuda.
How long does atrazine stay in the soil?
Atrazine does not bind well to soil and can easily move in it. It has an average half-life in soil of around 60-75 days .
How long does atrazine take to dry?
Answer: The drying time for Hi-Yield Atrazine Weed Killer is 4 hours after application . After the product has dried then it will be safe for your pets to re enter.
How do I use atrazine on my lawn?
- Mix 4.33 ounces of Atrazine per gallon of water.
- When mixing in a container, pour Atrazine first, followed by water for best results.
- Apply the mixture to 500 square feet of lawn.
