r.uslek Computes USLE Soil Erodibility Factor (K). Raster (r.*) QgsProcessingParameterRasterLayer|psand|Name of soil sand fraction raster map [0.0-1.0]|None|False QgsProcessingParameterRasterLayer|pclay|Name of soil clay fraction raster map [0.0-1.0]|None|False QgsProcessingParameterRasterLayer|psilt|Name of soil silt fraction raster map [0.0-1.0]|None|False QgsProcessingParameterRasterLayer|pomat|Name of soil organic matter raster map [0.0-1.0]|None|False QgsProcessingParameterRasterDestination|output|USLE R Raster