The most efficient irrigation method on large scale farms involve the use of

The most efficient irrigation method on large scale farms is overhead irrigation facilities. This is because the irrigation system can cover a large area of land with minimal effort, and the water can be applied evenly to the crops. Overhead irrigation facilities can be in the form of center pivot or linear move systems, which can irrigate thousands of hectares of farmland. Additionally, this method reduces the amount of water lost due to evaporation, runoff, or deep percolation, making it a more efficient use of water resources.