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
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.
Dimension 2EW Herbicide should be applied in the fall once soil temperatures have fallen below 70 degrees.
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.
Yes, Dimension 2EW Herbicide and Prodiamine can be mixed and applied as long as you have done a Compatibility Test in a glass jar to ensure the 2 are physically compatible prior to tank mixing into your sprayer. Each product label has instructions provides instruction on doing a Compatibility Test with other herbicides and you want to always follow the recommended rate per 1000 sq ft for each herbicide.
Here is a quick video on How to Tank Mix Lawn Care Products that can also explain more.
Dimension 2EW Herbicide states that you must wait 3 months before overseeding after a single application or 4 months after sequential applications. Generally we recommend that you apply a pre & seed in opposite seasons. For example if you apply a pre in the Fall, you will want to seed in the Spring, and if you seed in the Fall you would seed in the Spring.
https://www.domyown.com/know-when-to-overseed-with-pre-emergent-and-post-emergent-herbicides-v-566.html
Yes, Dimension 2EW Herbicide can be used in either fall or spring. However, since every product has a maximum rate per year, we generally recommend using one pre-emergent in the fall & in another in the spring. For example, you could use Pendulum 2G Granular Herbicide in the fall & the Dimension in the spring. You can also consult with your local extension office for the best time to apply.
http://npic.orst.edu/pest/countyext.htm
We would not recommend applying herbicides such as Dimension 2EW Herbicide during active precipitation or after rainfall. The manufacturer recommends to water this product in within 24 hours after application, so it would be best if you apply it the day before rain is expected again if you do not manually water the product in for pre-emergent applications.
Dimension 2EW Herbicide is does not specifically list dichondra on the product label. You should wait 2-3 mowings prior to applying the product. See the product label instructions for more details.
It would be best to dethatch the lawn before applying a pre-emergent like Dimension 2EW to a lawn so that the product can make better contact with the soil to create the barrier, and so that the barrier is not disturbed as it would be if you applied then dethatched.
We would not recommend using Dimension 2EW Herbicide in areas where runoff could occur. This could be harmful to aquatic organisms. We generally recommend not spraying when it is windy out so the product will not drift.