Do the nutrients in K-Mag Fertilizer leach?
Once K-Mag has dissolved in soil moisture, the three nutrients are subject to the typical behavior of the individual nutrients and the soil processes. In most soils, the sulfur in K-Mag will move much like nitrate nitrogen (NO3). Only in very sandy soils do potassium and magnesium leach to a limited degree. In less sandy soils that contain more clay (usually CEC greater than 5), little or no leaching losses will occur from K-Mag applications.
