The disc undercarriage consists of 10 individual adjustable spring jump assemblies, which provide good trash clearance and soil penetration. Unlike double disc type assemblies they are not prone to plugging in wet conditions. The seed distributors cater for a wide range of sowing applications, from small seeds right up to large legumes such as peas and lupins. Adjustable rubber gates minimize seed damage and fertilizer build up. Pneumatic depth wheels and screw assemblies on both right and left sides, are used to level the machine and maintain working depth.