Echelon 4SC labeled for pre-emergent control of poa annua only. According to the product label Poa annua is a winter annual. Applications of Echelon 4SC Herbicide should be made in
August or September to established, non overseeded turf before Poa Annua germinates.
Consult local Cooperative Extension Service for more specific applications timings for your
local area since August and September are approximate timings.
What type of grass do you have? What state do reside in?
Echelon 4SC is not specifically labeled for sandburs. We recommend Image 70 DG to treat sandbur. Also, to prevent them for next year, you should apply Barricade or Surflan AS as a pre-emergent. It will control sandburs in your yard, as well as a multitude of other broadleaf weeds. It is highly recommended that you refer to the product labels prior to purchase to make sure your lawn type is listed under grass species that are tolerant to the product.
Yes, when applied as a pre-emergent application Echelon 4SC Herbicide needs to be watered in.
There are various factors that come into play when using an herbicide, such as Echelon 4SC Herbicide for pre-emergent control. The soil type, temperature of the area, etc. all come into play. Depending on the type of turf, you may have to do more than one application.
Because Echelon 4SC Herbicide contains both a pre-emergent and a post-emergent herbicide, you can use this product only on well-established turfgrass. That is usually seed that has been up for at least four weeks or been mowed twice, whichever is longer. Reseeding after using Echelon would need to be delayed for 3-6 months depending on the rate used and where you are located. There is a chart on page 5 of the product label here that gives those rates.
It is possible that Echelon 4SC Herbicide will prevent the bulbs from emerging in a garden. This product is labeled for use in your residential lawn but not gardens.
Echelon 4SC Herbicide is not labeled for use on Bermuda pastures.
You will need 0.184-0.826 fl oz of Echelon 4SC per 100 sqft of area depending on the type of lawn you have in the athletic field, the rate is not set per gallon. Water is just the carrier and you would use however much water it takes you to cover the 1000 sqft sufficiently. Please refer to the Echelon product label to find the correct usage rate for your needs