almost all are metal, except the agrisem, because we usually dont use fertiliser in them. we are just starting to experiment fertilisers in the seeder for cereals, in spring, because we are not allowed to use nitrogen in the fall despite . remenber no-till is rare here, so there is almost no research done for this.

all those foldable air seeders are almost new on the market, those big width (for us) are not very sold in France , average width soulde be now 3 or 4m , and now they also sell 3.5 m (11' 8") wich are road legals

most of the job here is done with one tractor with 4  to 8 bottoms moldboard plow followed by a second tractor with front roller, powered harrow and seeder 3 or 4 meters.

this year we see a lot of brands with 6 to 8 meters foldable powered harows, and front seed tank,