Rob the first couple of years are hard , the ground is hard ,tree roots ,rocks & just plain poor soil .Rememberif it was good ground some one would be farming it.If you are next to the woods as you are the shade comes to play.

If this year does not please you don't worry.Do you have a 2 wheeled broad caster?If not get one.Once a month go back and broadcast 250lbs of lime.Its four bucks a bag for easy spread .20 bucks a month.It will pay off.
Next year spray with round up to kill the weeds ,and you will have plenty.
Plant buckwheat .it has a big root ball and helps free up the soil.
Use a frertilizer with little or no nitrogen 0-14-40 or 5-10-10 weeds thrive on nitrogen.
Feel free to p.m. me Good luck Jim