What are the criteria used by the Salinity Lab to distinguish between plants that have high, medium, and low salt tolerance?
• According to pages 65-67 of USDA Handbook 60, the salt tolerance lists are arranged according to major crop divisions; and in each division, crops are listed in three groups. • Within each group, crops are listed in the order of decreasing salt tolerance, but a difference of 2 to 3 places in the column may not be significant.