Abstract: A furrow opener features an opener body including a shank mount and upper and lower interface portions at a forward side of the opener body. A replaceable tip body has a furrowing portion for opening a furrow in the ground, a top interface portion at its rear for mating with the upper interface portion of the opener body and a rear accommodating portion defining an accommodating space between the opener body and the tip body when the top interface portion is mated to the opener body. An intermediate body has a mounting portion arranged to interface with the rear accommodating portion of the tip body and the lower interface portion of the opener body to fit in the accommodating space defined therebetween. The tip and intermediate bodies are separately replaceable, thereby accounting for different rates of wear at different areas of the opener.

Abstract: A multi-piece cutting edge attachment for a circular shaft of a harrow tine features a mounting member formed of a material that is weldable to, and distinct from, a first material of the harrow tine. A cutting edge member is formed of a third material that is harder than the first and second materials and less weldable to harrow tine than the second material of the mounting member. The cutting edge member has a front face and an opposing rear face that is conformingly shaped for placement against a front face of the mounting member at a lower end thereof. The multi-piece arrangement forms a cutting edge of greater hardness than that which is achievable by a material directly attachable to the tine itself.