- Cropping index:
- The number of crops grown per year on a given piece of land multiplied by 100 is cropping index
i.e. Cropping index = Total number of crops/Net cultivated area x 100
- Cropping intensity:
- Cropping intensity indicates the number of times a field is grown with crops in a year. It is calculated by dividing gross cropped area with net area available in the farm, region or country.
i.e. Cropping intensity (CI%) = Gross cropped area / Net area available x100
- Land equivalent ratio (LER)
- LER is the relative land area under sole crops that is required to produce the yields achieved in intercropping
i.e. LER = Yij /Yii + Yij/Yjj
Where, Yij = Yield of inter crops, Yii and Yjj = Sole crops yield of component crops.