<p><span style="font-family: georgia, 'times new roman', times, serif; font-size: 15px; line-height: 22px;">Three generations of Al Kalin’s family have worked their 2,000 acres of carrots and sugar beets, wheat and alfalfa for almost a century in the Imperial Valley, a scorching swath of Southern California desert that was unfit for farming until water from the Colorado River was diverted here&nbsp;in 1901.