Cropping intensity and irrigation intensity

Cropping intensity

The ratio of the gross cropped area in a year to the net sown area, expressed as a percentage.

$$\text{Cropping intensity}=\frac{\text{Gross cropped area}}{\text{Net sown area}}\times 100$$

Example: 100 ha net sown, with 100 ha rice and 80 ha wheat, gives $\frac{180}{100}\times 100 = 180\%$.

Irrigation intensity

The percentage of the culturable command area (CCA) that is irrigated in a given season or year by the project.

$$\text{Irrigation intensity}=\frac{\text{Area irrigated}}{\text{CCA}}\times 100$$

Example: wheat irrigated on 3000 ha out of a CCA of 5000 ha gives 60%. Irrigation intensity may be given crop-wise (e.g. 30% wheat, 15% rice) and the sum over a year may exceed 100%.