No, no, no. Desal is not ever going to be used to irrigate crops in California. You would need to build something like 100 of the largest desal plants in existence to meet the ag demand (~= 100k AF/day). Oh and a way to pump it all a hundred miles inland, over a coastal mountain range. Also, there are significant environmental impacts associated with both desal and nukes which you have completely ignored. Pretend like technology is going to rush in and save the day delays our transition to a realistic, sustainable way of life.