@edgarblythe,
It was hard times. After the Okies became a recognized part of California, they used the same tactics on the Mexicans until Caesar Chavez came along and unionized them. It is just one story have the other about management and the downtrodden workers.
I cut wheat, barley, maize and bermuda grass seed out of Blythe; between Palo Verde and Needles. On both the California and Arizona side of the Colorado River, for 3 years after I got out of the Army.