Symptoms appear first as a chlorosis on the blades of the younger leaves near the center of the plant. The interveinal areas of the leaf blades become light green to yellow, with the main veins remaining green and raised. When viewed against bright light, the leaf blade shows a netted, mosaic pattern, branching out from the main veins. Early phases of this mosaic pattern are reminiscent of manganese deficiency. As the symptoms develop, including stunted fibrous roots the interveinal areas appear as flat, yellow-green depressions which become dry and are in sharp contrast to the adjacent levees of "raised" green veins. These advanced symptoms of chlorine deficiency are unique and are clearly distinguishable from other nutrient deficiencies.