The document summarizes the OECD's Codes and Schemes program for agricultural equipment. It notes that the program has 63 participating countries that establish voluntary standards for seeds, tractors, forestry equipment, and fruits/vegetables. The tractor codes aim to simplify trade by setting performance criteria and quality levels. Participating countries implement testing according to the codes. The objectives are harmonizing descriptions, establishing specifications, and facilitating trade. Benefits include regulatory cost reductions for companies and quality assurances for farmers. New challenges include addressing precision farming technologies, environmental issues like emissions, and ensuring standards keep pace with technological changes.