Actually no. But farmers have created a special problem for themselves:

In a normal industry, wages increase and over a period of time, technology and techniques are developed to reduce the use of labor.. increasing labor productivity and controlling costs. This increased productivity is what allows firms to pay high wages.

In the farm industry, this hasn't occurred. Instead of increasing wages (and stimulating demand for new technology in their industry), they would simply hire more migrants to do the work instead. And so farmworkers are now almost entirely migrants. They've been doing this so long, that they've lost decades of small increases in labor productivity that would have normally occurred (and has occurred in virtually every other industry.. which they are competing with for labor).

So while part of the answer is to increase wages to attract US workers... increasing labor productivity is also required. I think farms would find it quite difficult to compete in the US labor market, while depending on practices that have not been modernized.

We know farm productivity can be increased.. where there's a real cost (the farmers themselves), plenty of tools have been created. But in the specific area of picking, migrants have been used instead.