Damp off : To decay and perish through excessive moisture.

Example:


Taxonomy
Damping off, seedling, seeds, free encyclopedia, fungus, sprout, infected, horticulture, ground, Macrophomina phaseoli, Phytophthora, Pythium, germination, soil, chamomile tea, garlic, Symptoms, Botryotinia.

Defination from the web:
Damping off is the term used for a number of different fungus-caused ailments which can kill seeds or seedlings before or after they germinate. ... Damping off can be prevented in many different ways, including germination in dryer conditions with better air circulation (but this slows ...