Symptoms always start at youngest leaves with yellow green later pale yellow interveinal chlorosis. Veins still remain green. Sometimes leaves look like a mosaik or net, because also fine veins belong green. At prolonged deficiency veins become chlorotic too and symptoms extend to older leaves.
Made worst by
High pH. Water logged soils. Calcareous soils. High copper, manganese or zinc soils.
Combats chlorosis. Prevents premature leaf fall. Gives healthier, greener trees.
Iron deficiency on leaves of lemon