Abstract: An agricultural implement for collecting, pulverizing and dispersing straw that has been windrowed during a harvesting operation. A frame carries a pickup mechanism at a front end thereof, and first and second straw-processing stages therebehind, and each featuring a rotor and accompanying concave having static teeth fixed thereon. The first rotor likewise has fixed teeth, and the second rotor has flailing knives, whereby the straw is gradually broken down in the two sequential stages before discharge back into the field.