The experiments took place from 2011-2014 with strawberries planted in a black-plastic-covered perennial system (BP) and a matted-row system (MR). The experiments evaluated fruit yield, soil pH tolerance, and winter survival rates, among other traits. "We used two to three applications of 0.67 g•m-1 per linear row of 6% chelated iron each year through fertigation to effectively treat leaf chlorosis resulting from high soil pH," Yao noted.