Symptoms of Sulfur Deficiency in Plants:
The symptoms of sulfur deficiency in plants usually spreads over time and can be observed more in soils that lack organic matter. One of the severe factors of Sulfur deficiency is the reduction of beneficial soil bacteria and low soil moisture. In most cases, the Sulfur element is a non-mobile element, and the symptoms of its deficiency are first observed in younger or upper leaves. As a result, the plant turns pale green and yellow and the veins also turn yellow, and subsequently the growth of the plant and leaves decreases. Sulfur deficiency is almost similar to nitrogen deficiency; the only difference is that sulfur symptoms appear in younger leaves.
So in short, the most significant symptom of sulfur deficiency is paleness of veins, reduction of plant growth and the number of leaves, and occurrence of yellowness without point burn.