Andersons 0.48 Barricade Herbicide contains a pre-emergent that needs to be applied before weeds have emerged as it is used to prevent germination. Please contact your local cooperative extension office to determine the correct timing of the application as this will vary greatly from region to region.
Unfortunately we do not have the spreader settings for that specific combo and the manufacturer does not list that spreader on their bag of Andersons 0.48 Barricade Herbicide. Due to there being thousands of granules on the market and just as many different types of spreaders, you will want to calibrate your spreader to the product you are using and its application rates. You can see a short video on how to accomplish this below.
How to Calibrate your Spreader
Yes, you are able to overseed after an application of Andersons 0.48 Barricade Herbicide. This product could inhibit the germination of turf species if you overseed too soon after an application. Please follow the intervals given based on the rates used on the table located on page two of the product label for best overseeding/reseeding results.
When used at the lowest rates, it starts at 4 months after application that you can overseed.
No, Andersons 0.48 Barricade Herbicide is a pre-emergent that helps prevent weeds on the label from germinating, it does not contain a fertilizer. What fertilizer you need is going to vary depending on what nutrients are needed. We actually have a great guide that can explain how to select the best fertilizer for your lawn. You can find the guide here