Irrigation methods can significantly reduce water usage for some crops. Others require gobs of water. I don't know the numbers for each crop, though. The Almon

Irrigation methods can significantly reduce water usage for some crops. Others require gobs of water. I don't know the numbers for each crop, though. The Almond Board of California has some info on this for Almonds. Obviously, take this as you will, given the source: http://www.almonds.com/pdfs/waterfactsheet315.pdf http://www.almonds.com/pdfs/waterfactsheet315.pdf