Pretty obvious you didn't bother to read the link. Either that or you somehow know theses farmers businesses better than they do (which of course is a common occurrence on GB.com).
Mr. Trump’s immigration policies could transform California’s Central Valley, a stretch of lowlands that extends from Sacramento to Bakersfield.
Approximately 70 percent of all farmworkers here are living in the United States illegally, according to researchers at University of California, Davis. The impact could reverberate throughout the valley’s precarious economy, where agriculture is by far the largest industry. With 6.5 million people living in the valley, the fields in this state bring in $35 billion a year and provide more of the nation’s food than any other state.
The consequences of a smaller immigrant work force would ripple not just through the orchards and dairies, but also to locally owned businesses, restaurants, schools and even seemingly unrelated industries, like the insurance market.
Mr. McClarty is not just concerned about his business, but also about his work force, he said. Many of them have worked for him year-round for more than a decade, making at least $11 an hour. After immigration officials audited his employee records a few years ago, he was forced to let go of dozens of employees.
https://www.nytimes.com/2017/02/09/us/california-farmers-backed-trump-but-now-fear-losing-field-workers.html?_r=1The supply of labor to the agricultural industry will decline causing wages and the cost of produce to increase. It will affect all farmers equally and therefore none of them will go out of business. in the end the consumer will pay more for produce. It's not the end of the world.