Inter-cropping is the growing of two or more crops simultaneously on the same field in a definite pattern. The crops are selected such that their nutrient requirements are different ensuring maximum utilisation of the nutrients supplied. This method prevents pests and diseases from one plant to spread to other plants in a field. Thus both the crops give higher productivity.
Crop rotation is the growing of different crops on a piece of land in a pre-determined succession. The next crop to be cultivated depends on the availability of moisture and irrigation facilities. Its advantage is that two or three crops can be grown in a year with good harvests.