Agricultural applications for clay minerals, most commonly attapulgite and montmorillonite, include carriers and drying agents. Carriers are used as a delivery system for crop protection chemicals, including herbicides, fungicides, insecticides and nematicides. The carriers reduce dust and facilitate accuracy of the application. Large chemical companies use clay carriers, which have absorptive characteristics, to absorb and hold the chemicals that will later be released to the crop.
As a drying agent, carriers are mixed into fertilizers and pesticides to eliminate moisture, which unclogs equipment extruders and improves handling and flow characteristics.