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Cotton Responds to Sulfur
 Many sandy, low cation exchange capacity (CEC) soils of the southern coastal plain have low levels of extractable sulfate-S (SO4-S) in the top 18 inches of soil. Some of these soils exhibit limited retention of applied S. Cotton yield response to applied S has been measured. One study in Alabama evaluated four rates, five sources and different times of application of fertilizer S for cotton. Scientists summarized that (1) cotton may require annual applications of at least 20 lb S per acre to achieve high yields, (2) differences among the five sources were minimal and (3) S can be applied preplant or prior to first square stage of growth. A visible symptom of S deficiency was a light green color of recently matured leaves.
For more information please see: Cotton Response to Sulfur on a Coastal Plain Soil
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