Agriculturists and farmers select component crops for mixed cropping based on the following criteria:
- Duration of Crops: One crop is of long duration and the other is of short duration.
- Growth Habit: The two-component crops grow to different heights with different canopy.
- Root Pattern: One crop component is deep rooted whereas the other is shallow rooted.
- Water Need: One crop component requires comparatively lesser water than the other.
Nutrients Demand: One crop component requires more nutrients and the other requires lesser nutrients.