Colloidal clay bonded agricultural granule

Claim 1

A SOLID AGRICULTURAL COMPOSITION CONSISTING OF GRANULES COMPRISING AN APPARENTLY HOMOGENOUS MIXTURE OF PARTICLES OF A SOLID MINERAL CARRIER AND AT LEAST ONE ACTIVE AGRICULTURAL MATERIAL SELECTED FROM THE GROUP CONSISTING OF A HERBICIDE, AN ALGICIDE, A TRACE PLANT FOOD ELEMENT AND AN INSECTICIDAL TOXICANT, SAID ACTIVE MATERIAL BEING PRESENT IN SAID MIXTURE IN AN AMOUNT IN EXCESS OF THAT WHICH CAN BE IMPREGNATED ON SAID CARRIER, SAID CARRIER COMPRISING A MIXTURE OF PARTICLES OF A SORPTIVE SILICEOUS MINERAL SELECTED FROM THE GROUP CONSISTING OF CALCINED ATTAPULGITE CLAY, CALCINED SEPIOLITE CLAY AND CALCINED DIATOMACEOUS EARTH AND FROM 2 TO 50 PERCENT, BASED ON THE VOLATILE FREE WEIGHT OF SAID CARRIER, OF A SORPTIVE CLAY BINDER MATERIAL SELECTED FROM THE GROUP CONSISTING OF ATTAPULGITE CLAY AND SEPIOLITE CLAY, WHICH CLAY CONTAINS SUBSTANTIALLY ALL OF ITS WATER OF HYDRATION AND HAS A FREE MOISTURE CONTENT OF AT LEAST 5 PERCENT BY WEIGHT.