One method used for crop production which ensures high yield is plant breeding. It is the science involved in improving the varieties of crops by breeding plants. The plants from different areas/places is picked up with desired traits and then hybridisation or cross-breeding of these varieties is done to obtain a plant/crop of desired characteristic.
The high yielding crop variety shows the following characteristics:
High yield, early maturation, less water for irrigation, better quality seeds are produced, less fertilizers required, adapts itself to the environmental conditions.

Advantages of using inter-cropping:

1. It helps to maintain soil fertility.
2. It increases productivity per unit area.
3. Save labour and time.
4. Both crops can be easily harvested and processed separately.

Advantages of using crop rotation:

1. It improves the soil fertility.
2. It avoids depletion of a particular nutrient from soil.
3. It minimise pest infestation and diseases.
4. It helps in weed control.
5. It prevents change in the chemical nature of the soil.