View a Markon Live from the Fields video about the current cold snap in the Arizona/California desert growing region. Lettuce ice formed on desert crops for the third consecutive morning today. Although the ice was not as severe as the previous two days, harvesting delays of 2-3 hours were incurred. Ice-related defects are already developing in lettuce crops, which will cause a decrease in yields and case weights over the next two weeks or more. Quality and supply will be affected for at least the next 3-4 weeks.