Posted: 22/10/2014 at 10:21
It's too late to do anything right now. Weed killer applied now won't be effective. You have 2 options, you can cover it for the winter with a weed suppression fabric, or leave it till spring when you can apply a weedkiller. The main weed is clover which will die off after treatment. Use a glyphosate based weed killer, and treat when weeds are actively growing. Don't rotavate the soil again, doing so only redistributes weed seed and roots. Give the weedkiller 2 weeks to work, then you can start preparation for the turf.