Included trace elements
Some NPK fertilizers also contain secondary and micronutrients essential for specific needs. These may include magnesium (Mg), sulphur (S), boron (B), iron (Fe), manganese (Mn), molybdenum (Mo), and/or zinc (Zn). These formulations benefit the grower because they provide even distribution of nutrients, whether spread by hand or machine. There is no risk of nutrient segregation during shipping, handling or spreading.