On Pesach the world is judged for the coming year's grain: Rosh HaShanah 16a
This judgment is the reason for the bringing of the Omer-Flour Offering on Pesach: Rosh HaShanah 16a
Each crop of grain actually undergoes two judgments: Rosh HaShanah 16a
When the judgment is sealed: Rosh HaShanah 16a