We would recommend Atrazine to kill poa annua in centipede turgrass. You will use 1.1 pint sper 4 gallons of water per 2,000 sq. ft. You should also use a pre-emergent such as Prodiamine in late Summer or Fall to prevent this weed from germinating going forward. Please refer to the product label for complete application instructions.
Southern Ag Atrazine Weed Killer is is formulated specifically for St Augustine and Centipede grasses only and should not be used on any other types of grass as it could be harmful.
Since you mentioned that your St. Augustine grass is not perfectly healthy right now, we are hesitant to recommend that you apply anything as you may cause more harm to your lawn than good. Herbicide product labels recommend applying products only to healthy lawns, and knowing that St Augustine grass is a sensitive grass we would advise that you contact a local landscaping company or master gardener in your area for the best advice on how to treat while the lawn is not healthy.
Southern Ag Atrazine Weed Killer for St. Augustine Grass product label does not instruct that a surfactant should be used, so it would not be recommended
Southern Ag Atrazine Weed Killer for St. Augustine Grass can safely be applied to St. Augustine lawns for targeting listed weeds. It should not be applied to trees or over the rooting area of the trees. We are not aware of a product for selective control that is inactive in the soil. Please let us know if you need further assistance. We are happy to help!
Per the product label for Southern Ag Atrazine Weed Killer for St. Augustine Grass the rate is 4.3 oz. per gallon of water per 500 sq. ft., or 1.1 pints in 4 gallons of water to treat 2000 sq. ft.
No, Southern Ag Atrazine Weed Killer should only be used on established St. Augustine or Centipedegrass turf. It could possibly damage any other desirable plants, according to the product label. We have many other pre-emergent herbicides that are safe to use around established ornamentals such as palms. Surflan Pro is a popular choice for both warm season turf and ornamental areas, depending on what weeds you are targeting. You can browse all our pre-emergent herbicides here.
Southern Ag Atrazine Weed Killer for St. Augustine Grass is not labeled for dollar weed. You may want to consider using Speedzone Southern Herbicide instead.
Southern Ag Atrazine Weed Killer for St Augustine should only be used on Centipede and St. Augustine turf. Bahiagrass can be sensitive to a lot of herbicides
We are not as familiar with products that are safe to be used in agricultural areas such as corn fields as we are new to that side of products. We recommend contacting your local department of agriculture to get recommendations that local farmers use for weed and grass control in crops. Once they give you a product name or ingredient, give us a call and we would be more than happy to see if we carry it or can get it for you. 1-866-581-7378.
We do have the Vegetable & Ornamental Weeder that can be used in potatoe plantings. It is a pre-emergent herbicide that helps to control grasses and broadleaf weeds.
Southern Ag Atrazine Weed Killer for St Augustine Grass should not be applied to trees or over the rooting area of the trees. We are not aware of a product for selective control that is inactive in the soil.
While Atrazine is a common active ingredient to treat weeds in sorghum, Southern Ag Atrazine Weed Killer for St Augustine Grass is not labeled for sorghum. so we cannot recommend it. We would recommend that you contact your local cooperative extension office for advice on what would work best for your needs.
Southern Ag Atrazine Weed Killer for St Augustine Grass is not labeled for sandbur in St. Augustine. Image Kills Nutsedge is labeled for post emergent applications for sandbur control in Bermuda and St. Augustine however this is a difficult weed to control once it's established.
Sandburs are best control through pre-emergent applications 2-4 weeks before before seed germination. Monterey Weed Impede(liquid) or Pendulum 2G Herbicide(granule) are labeled for Sandbur in St. Augustine.
According to the Southern Ag Atrazine Weed Killer for St Augustine Grass product label this product should not be applied over the rooting area of trees, ornamentals, vegetables or other desirable plants other than the indicated turfgrasses.
A product like Opti Amine 2,4-D Amine Herbicide may be applied over top of corn to control broadleaf weeds.
Southern Ag Atrazine Weed Killer for St Augustine Grass is mixed at 4.3 fl oz per gallon of water per 500 sq ft or 1.1 pints per 4 gallons of water per 2,000 sq. ft per the product label.
In a 48 oz spayer, you would use 1.6 fl oz per 188 sq ft of area.
Southern Ag Atrazine Weed Killer for St Augustine Grass is only safe to be applied to St. Augustine and Centipedegrass.
Once an herbicide like Southern AG Atrazine Weed Killer for St. Augustine Grass has been diluted in your spray tank, the solution should be used within 24 hours. The diluted solution will start to break down and become unstable, lose it's effectiveness, and could potentially cause corrosive effects on your sprayers' components.
Southern Ag Atrazine Weed Killer for St Augustine Grass does list spurweed (burweed) on the label if used as directed. Spurweed (burweed) is best controlled with a pre-emergent before the weed germinates. This winter annual germinates in the fall. A fall pre-emergent and spring pre-emergent are suggested prior to ground temperatures reaching 55 degrees. Pendulum 2G is labelled for both Cool and Warm Season established lawns. Please refer to the product label for your lawn type and application rates.
Southern Ag Atrazine Weed Killer for St Augustine Grass would be applied whenever the target weed is actively growing and healthy in your area. Best results are usually obtained when applied in early spring or dormant periods when weeds are small or have not emerged. The only temperature restriction on the label is to not apply when the temperature is above 90 degrees.
