Blight

A disease ruinous to crops. In the OT blight was seen as evidence of God's judgment.

Blight as punishment from God

Deuteronomy 28:22 See also Hosea 9:16; Amos 4:9; Haggai 2:17

The LORD will strike you with wasting disease, with fever and inflammation, with scorching heat and drought, and with blight and mildew; these will pursue you until you perish.

Deliverance from blight

1 Kings 8:37–39 parallel 2 Chronicles 6:28–30

When famine or plague comes upon the land, or blight or mildew or locusts or grasshoppers, or when their enemy besieges them in their cities, whatever plague or sickness may come, then may whatever prayer or petition Your people Israel make— each knowing his own afflictions and spreading out his hands toward this temple— be heard by You from heaven, Your dwelling place. And may You forgive and act, and repay each man according to all his ways, since You know his heart — for You alone know the hearts of all men —

Blight as a symbol of sorrow

Psalm 102:4

My heart is afflicted, and withered like grass; I even forget to eat my bread.