An agricultural primary tillage implement is disclosed with a row cleaner assembly attached in front of the shank. The siderail body includes a handle configured to be gripped by a person. Each particle preferably has an average diameter of 1 \u03bcm and 10 \u03bcm and may comprise a plurality of elongated macropores having an average diameter of between 150 \u03bcm and 500 \u03bcm. An outer member may be placed about the distal portion of the core wire and extend over the reinforcing member. The data processor of the ultrasound system also determines positive and negative signal boundaries for each spectral line of Doppler data and a display architecture processes the signal boundary data to display a spectral trace corresponding to the edges of the spectral lines.