In the passage from Isaiah, God is lamenting, "What more could I have done to ensure a better yield? I hoped for justice and equity but saw injustice and iniquity instead."
In Psalm 80, the people are addressing God in a time of their suffering:
O God, of hosts, restore us; show Your favor that we may be delivered.
In the plea for help, they remind God, "You were the one who planted us here." Of course, God knows that, but, of course, sometimes we need to remind ourselves.
"Help us," they ask, "and next time we will not turn away from you." May we continue to pray this promise but may we also live in away that keeps that promise.