Silt three grades fine, medium and coarse 0.002 mm to 0.006 mm to 0.020 mm to 0.063 mm). In actuality, silt is chemically distinct from clay, and unlike clay, grains of silt are approximately the same size in all dimensions; furthermore, their size ranges overlap. Clays are formed from thin plate-shaped particles held together by electrostatic forces, so present a cohesion. Pure silts are not cohesive. According to the U.S. Department of Agriculture Soil Texture Classification system, the sand–silt distinction is made at the 0.05 mm particle size. The USDA system has been adopted by the Food and Agriculture Organization (FAO).
Granular Inc. Granular Inc. Granular Inc. is a San Francisco-based company that develops and markets farm management software. The company's software allows farmers to manage operational and financial data on a single cloud and mobile platform. As of 2016, Granular raised $25 million in venture funding and acquired the farm valuation platform AcreValue. Granular is a spinoff of the company Solum, which was founded in 2009. In 2014, Monsanto acquired half of the business, which focused on soil testing and was merged with Climate Corp. The remaining half of the company was spun-off into Granular. After the split, Granular raised $4.2 million