I think we are talking about 2 different curses. It is true that Jesus was cursed on the cross by the Father and God forsook Him in that God cannot look upon the sin which Jesus bore for us. The original curse at creation was one on the ground (land, environment) which God did to make Adam's life one of toil and tribulation. It would be by the sweat of his brow that the land would yield food. This is the curse that still produces famine, drought, tornadoes, floods, and hardship of all kinds resulting in suffering.
Gal 3:13 tells us that Christ has redeemed us from the curse of the law. It does not tell us about the curse on the ground.