Using Foliar Manganese Applications to Correct Deficiencies
Also, if the soil pH is too high, any soil applications of Mn will likely not help your plants. Apply 0.5 to 1 lb chelated Mn (elemental basis) or 1 to 2 lb of inorganic Mn oxide or Mn sulfate (elemental basis) per acre foliarly prior to flowering. More than one application may be required to correct a severe deficiency.