Managing Sulphur as Plant Nutrient

Understanding plant and soil interactions provides a foundation to effectively manage all plant nutrients. In some previous trials ammonium sulphate (NH4SO4), potassium sulphate (K2SO4), and zinc sulphate (ZnSO4) have been employed to correct what was perceived as specific nutrient deficiencies whereas the responses attributed to the N, K, and Zn may have been partially due to S or its interactions with other nutrients. These situations illustrate the need to be more specific in diagnosing plant nutrient deficiencies.