Weed Science
- Branch of study of ecology, life cycle, and management of weeds.
- WEED: plant growing out of place, growing where it is not wanted is defined as weed.
Nematology
- Branch of science deals with diverse group of round worms that live in a wide range of environments including soil and fresh and salt.
- Nematodes that parasitize plants and are called Plant-parasitic nematodes.