Question
theI recently placed new topsoil and rye grass seed on a new patch of lawn.  I placed a small amount of fertilizer at the time and a Mon month later a combination weed/killer and fertilizer again due to multiple weed invasion   My grass started to grow beautifully and lush.  Now i am getting large patches of brown,dead grass.  I have tried to thatch the old dead grass out and the brown seems to be spreading.  I water the grass and have it cut 1/week.  Please help

Answer
Some mess you've got there to deal with, dear.  Pity you did not contact me before you used the chemicals.

Please tell me what 'fertilizer' and 'combination weed/killer and fertilizer' you used.  Also what do you mean by 'thatch the old dead grass out' -- you used a dethatcher or you removed this by hand?

Fret not.  This is easy to fix but you have much to learn.

L.I.G.