Sulphur is an essential building block in crop health. One of 18 important plant nutrients, sulphur is considered a secondary-macronutrient.
By many accounts, however, sulphur is the fourth “primary-macronutrient”, along with Nitrogen, Phosphorous, and Potassium, as it is so essential to successful plant growth and the effective absorption of other nutrients.
Crop fertilization is a complex puzzle. Too often, only the primary macronutrients (N, P, and K) are focused on. To be fair, these are certainly the nutrients required in greatest quantity by almost every crop. However, failure to evaluate and utilize secondary macronutrients and micronutrients can lead to yield limitation, yield quality reduction, or even crop failure. Extensive soil and tissue testing is strongly recommended to determine crop needs, and should be utilized to determine an appropriate fertilization program to achieve maximized yield potential.