noun
locust plague; crop damage by grasshoppers
Refers specifically to agricultural damage caused by locusts or grasshoppers. Often used in news or technical contexts.
アフリカでは蝗害が深刻な食料不足を引き起こしている。
In Africa, locust plagues are causing severe food shortages.
今年の蝗害は過去最悪の規模だ。
This year's locust damage is the worst on record.