Disc Seeder's So Far

Throughout the UK, USA & Canada the bulk of the disc seeders’ have been mainly John Deere single disc for small grains and double disc for precision.

A Green Farmer

JD Disc Assembly with Thompson Wheel

There were a number of different machines at the No-Till Alliance Day in Kent UK.
Weaver Caddy was an English Design with a lot of merit. The assembly was a double disc unit, that were offset with the outside disc semi scalloped. There is also a small scalloped closer.

Weaver Caddy Air Seeder Box (2.5t or 5t)

Weaver Doubl Disc Assembly

Cross Slot in Action

Prairies of Kansas with a 24ft folding Cross Slot drill

The New Zealand Cross Seeder was also there. It is quite a good structured machine. Over engineered would be how I saw it, and it requires a lot of draft.
The Case SDX machine has a single disc unit with a seed firming wheel and them a furrow closure. There are two ranks which can be individually held up to double your row spacing.

A Red Farmer

Disc Assembley od SDX

I would like to see this with a double disc assembly.

Sunshine Combine

Disc Assembly With Stubble Holders to Aid Cutting

The Sunshine combine is manufactured in Kansas near the Palen’s farm at Glen Elder. I was a good design machine but would off liked to see it a bit sturdier.