Manganese Sulfate with 18% sulfur., For soils deficient in Manganese (Mn), apply this fast-acting source of 32% Mn to the soil. Can be broadcast, side banded or foliar sprayed. Apply according to soil test results or tissue analysis. Manganese is a micronutrient that is commonly deficient in soils with a pH level above 6.5. When your plants lack this mineral, they exhibit visible symptoms. For example, beans and many non-grain crops develop yellow or white areas between the veins of the leaves. To remedy this, you can apply manganese sulfate, which is one of the most common fertilizer sources of manganese. You can choose to fertilize with manganese via a soil application or foliar spray.