Whether oryzalin or dithiopyr is the best choice for you will depend on what weeds you are targeting, where you need to apply the product, and what price point you are wanting. Dithiopyr, which is the active ingredient in Dimension 2EW Herbicide, is the preferred pre-emergent for crabgrass and also covers a variety of other grassy and broadleaf weeds. Dimension also has the unique quality of offering early post-emergent control of crabgrass. Oryzalin (Surflan) is economical and can be used in some areas where Dimension may not be able to be used. Always be sure to check the product labels for whether the product you want to use is appropriate for your needs and safe to use around your target areas. Please let us know if we can further assist you.
In Arizona, you would generally make two applications of Dimension 2EW Herbicide 5 to 10 weeks apart. We would recommend the Program 2 or 3 rates of 1 oz per 1,000 sq ft and then 1.5 oz per 1,000 sq ft, or 2 applications of 1 oz per 1,000 sq ft each, according to the product label. Be sure that you immediately water-in the application with a high volume of water any time there is a barrier like gravel over the ground. This will help get more of the active ingredient down to the soil so that it is not just absorbed into the rocks before it can reach the dirt. (Since this product is still intended to be used around turfgrass and ornamentals, you may not get the same results on a stone area.) At the 1 oz,1000 sq ft rate, you would use 0.22 oz of Dimension 2EW in 1 gallon in your sprayer to cover 220 sq ft.
Dimension 2EW Herbicide and fertilizer can be applied at the same time. There is no wait period.
Barricade and Dimension are actually in the same class of herbicides which means they work with the same mode of action for most of the same weeds and there would be no benefit to using each so close together. It is more recommended to rotate each season between different actives to prevent resistance buildup. Typically Dimension is more recommended in the spring as it is best for crabgrass and has early post emergent control of it as well (in a separate application). Using the max rate in one season would prevent you from using either in the fall which is also a recommended time for pre-emergent applications for winter/spring weeds.
Buffalograss is listed on the Dimension 2EW Herbicide product label as tolerable with a note: Do not use this product on seedling buffalograss in the spring of the first year of establishment until the turfgrass is fully green and has established new roots. Dimension 2EW is a pre-emergent herbicide, so it is best applied before soil temperatures reach those that are optimal for the weeds you are targeting. This is generally before soil temperatures reach 55 degrees in the spring. In the fall, you would want to apply before soil temperatures cool to those favorable for these weeds, usually below 70 degrees. We recommend contacting your local Cooperative Extension for the best recommendation on application timing in your area.
Dimension 2EW Herbicide should be applied in the fall once soil temperatures have fallen below 70 degrees.
Dimension 2EW Herbicide is a pre-emergent herbicide to prevent weeds from germintating so it will not kill existing quackgrass. Unfortunately, there is really nothing that can be done other than spot treating with a Roundup-type product.
You will need .75 - 3.0 pints of Dimension 2EW per acre. The exact amount you will need will be based on what region you are located in and what program you choose. Please refer to page 5 of the Dimension 2EW Herbicide Label for more specific information
Yes, Dimension 2EW can be tank mixed with a variety of other herbicides and fertilizers. It is always recommended to do a test mix first to make sure whatever product you are wanting to use with the Dimension blends easily and does not cause clumping or any reaction that would cause your equipment to clog. Keep in mind herbicides containing Glyphosate are non-selective, so it will kill any plants that you spray with it. If you are planning on doing a lawn renovation such as reseeding, you will need to wait a full season after applying Dimension before you can reseed the lawn.
Dimension 2EW Herbicide does not stain but does have a mild odor.
The best time to apply Dimension 2EW Herbicide is after the ground is no longer frozen and before the soil temperatures reach 60 degrees.
We would not recommend Gallery 75 DF, as it's not labeled for Crabgrass or Poa annua. We would recommend to use Dimension 2EW Herbicide, it's labeled to help with pre-emergent control of Crabgrass, Spotted Spurge and Poa Annua, it's also safe to use on Bermudagrass (except on Tifgreen 328 hybrid), Zoysia and Tall Fescue. Dimension 2EW can also be used on landscaped ornamentals.
Dimension 2EW is a pre-emergent herbicide, so it is best applied before soil temperatures reach those that are optimal for the weeds you are targeting. This is generally before soil temperatures reach 55 degrees in the spring. In the fall, you would want to apply before soil temperatures cool to those favorable for these weeds, usually below 70 degrees. We recommend contacting your local Cooperative Extension for the best recommendation on application timing in your area.
Dimension 2EW Herbicide should be applied when the soil temperature is at least 55 degrees Fahrenheit. This is generally done in early to mid March through the beginning of April depending on the temperature.
Dimension 2EW Herbicide may lose it's effectiveness after being frozen repeatedly. If it has separated it would be best to replace. It should be stored in a cool, dry place out of extreme temperatures and direct sunlight.
We do not recommend mixing any type of paint with Dimension 2EW Herbicide. We do sell several varieties of spray indicators which are safe to use with herbicides, fungicides, or insecticides on your turf. Our most popular choice is Turf Mark Blue.
Dimension 2EW Herbicide would be a good option to prevent pineapple weed in lawns and landscaped areas.
We would recommend Dimension 2EW for pre-emergent control but also consulting with your local extension office in your county for advisement on a fertilizer and weed control program.
Fertilome Weed Free Zone is a great post emergent broadleaf herbicide that is labeled for oxalis, black medic, burclover, and dozens of other broad weeds.
