8 September 1995

Winged tines increase establishment options

By Andy Collings

ITS been a good, dry harvest but how about getting next years crops established? Desirable as it may be, ploughing, on many soil types, is not an option this year – rock hard impenetrable ground is one reason and, if the plough can be persuaded to work, a field full of unbreakable boulders is another.

Short of leaving fields untouched until it rains, the solution is to surface cultivate with repeated passes of heavy disc harrows or tined implements. Or is it?

Amazone believes it has a third option. By fitting heavy-duty winged tines in front of its RPD power-harrow/tyre-packer drill combination, the company reasons the loosening action of the tines allows the power harrow to mix surface trash and soil more effectively before the seed is sown.

The use of such tines is not a totally new development for Amazone but the new "beefed-up" TL assembly is now claimed to be stronger and, in a dry season when soils are as hard as they are, allows one-pass drilling to be performed.

Replaceable points

Mounted on a welded box section, four tines are fitted to the 2.5m and 3.0m drills and six on the 4m and 4.5m versions. The tines comprise high-clearance legs with replaceable points, wings and trash shins – the latter having left and right hand versions to throw soil towards the centre of the drill. Two wing widths are available: 30cm and 60cm (12in and 24in), although for stubble work, the manufacturer recommends the use of 30cm wings to prevent too much soil being lifted.

Available factory fitted or as a retrofit for existing RPD drills, their use means 20% more power needs to be made available. For example, the 3m power harrow/drill combination fitted with TL tines requires a tractor with a minimum of 120hp, more on heavy soils. It also adds another £4435 on to the price of the drill.

Winged tines provide an initial loosening action on the Amazone RPD drills. Working depth can be adjusted from 15cm-25cm (6-10in). Inset: Note the curved trash shins which throw the soil towards the centre of the drill.