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For soils deficient in Manganese (Mn), apply this fast-acting source of 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.  You can choose to fertilize with manganese via a soil application or foliar spray.