The primary source of irrigation in Andhra Pradesh is:

Wells are the third most important source of irrigation in Andhra Pradesh, accounting for around 10% of the state’s irrigated area. Wells are used to extract groundwater, which is then used to irrigate crops.

Drip irrigation is a relatively new method of irrigation that is becoming increasingly popular in Andhra Pradesh. Drip irrigation involves the use of small pipes to deliver water directly to the roots of plants. This method of irrigation is very efficient, as it minimizes water loss due to evaporation and runoff.

In conclusion, canals are the primary source of irrigation in Andhra Pradesh. Tanks, wells, and drip irrigation are also important sources of irrigation in the state.