Weeds

Definition of Weeds

Unwanted and undesired plants that grow naturally along with the desired main crop

They are not intentionally sown and are competitive, persistent, pernicious, interfering with the main crop
Amaranthus and grasses are the examples of the weeds of wheat and rice plants
They reduce the main crop yield as they compete with the main crop for
- Soil nutrients
- Water
- Space
- Sunlight
The main characteristics of the weeds are as follows:
- Weeds grow naturally
- Faster establishment than the main crop
- High seed production
- Long term seed survival
- Well developed reproductive structures
- Adapted for spread in diverse habitat
They interfere with the harvest by contaminating the product quality
They either serve as host for crop diseases or provide shelter to insect and microbes that harm them
They are sometimes thought of benefitting the nature when following are considered
- Stabilizing the soil
- Adding aesthetic value
- Habitat and feed for wild life
- Adding to the organic biomass