yard

I have a few sections of my yard that has johnsongrass coming up. I'm looking to reseed those areas. What would you recommend that I could spray on those sections to kill it off that would allow my to reseed the same day?

Commercial duty 3PT lawn plugger aerator made by E.A. . This 36" model has 6 independent wheels with 3/4" rear discharge, high tempered, galvanized spoons that are made in the USA and are easily replaceable. I believe it is listed as being around 550-600lbs. It is made to work on a Subcompact...