Will God curse the earth?
Well, maybe, if he gets mad again.
And he shall turn the heart of the fathers to the children, and the heart of the children to their fathers, lest I come and smite the earth with a curse. Malachi 4:6
No, he'll never do it again.
And the LORD smelled a sweet savour; and the LORD said in his heart, I will not again curse the ground any more for man's sake. Genesis 8:21