State four inter cropping systems?

1. Alley cropping: Growing a main crop in between rows of trees or shrubs.
2. Relay cropping: Planting a second crop in between rows of a main crop before the main crop is harvested.
3. Cover cropping: Planting a secondary crop to cover the soil and provide nutrients and protection for the main crop.
4. Mixed cropping: Planting two or more different crops together in the same field to maximize land use and yield.

1. Row Intercropping: Growing different crops in alternating rows.
2. Strip Intercropping: Growing different crops in strips wider than rows.
3. Mixed Intercropping: Growing different crops dispersed randomly or irregularly.
4. Relay Intercropping: Growing a second crop after the first crop has been harvested.