On onion bulbs, affected tissue collapses and becomes bleached, soft and slippery. Affected areas dry and shrivel rapidly, and scales eventually become brown and necrotic. Soft rot organisms can invade and decay the bulbs if sun-scalded onions are not dried and cured rapidly.

Affected areas dry and shrivel rapidly in bulb, and scales eventually become brown and necrotic. Scalded areas look bleached and are initially pale, soft, and slippery.

High soil temperatures damage seedling tissue at the soil line, resulting in shriveling and collapse of plants. Affectedareas dry and shrivel rapidly, and scaleseventually become brown and necrotic.