Symptoms
Deficiency symptoms of sulfur start on younger leaves. The leaf color becomes light green and with severe deficiency it becomes yellow. These symptoms affect whole leaf evenly, and neither the veins nor the midrib remain green.
The growth of the plant is stunted and new emerging leaves are small and have a yellow-green color.
Reasons
Sulfur deficiency
N deficiency symptoms are similar to those described for S deficiency, but symptoms start on older leaves, and with severe deficiency the leaves become necrotic and die off.
Iron deficiency also results in chlorosis on younger leaves, but the leaf is not evenly chlorotic. Green zones remain around the midrib and on the leaf tip.