Manganese is a micronutrient that is commonly deficient in soils with a pH level above 6.5. When the plants are lacking this mineral, they exhibit visible symptoms. For example, wheat, 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 the most common fertilizer source of manganese. It can be used via soil application or foliar spray.