SOP is better than MOP when the crops are

SOP is better than MOP when the crops are Sensitivity to chloride.
SOP is Sulphate of Potash and MOP is the Muirate of Potash means potassium chloride.
Some of the crops are sensitive to chlorides then in that case SOP is better to use. SOP is not a naturally occurring mineral and usually must be produced through chemical methods. And because of the resource-intensive process used to create it, SOP is priced higher than MOP.