1. Bunker device for transporting products for use with agricultural implements, with the hopper includes:a reservoir adapted to accommodate the volume of the granular product, and the container can be moved between a first position in which the tank may be loaded with the granular product, and a second position in which residual granular product can be recovered from the reservoircharging opening formed in the tank and adapted to load the granular product into the tank when the tank is in a first positiona discharge opening adapted to flow connection with a device for transporting products anda container removably coupled to the reservoir to recover residual granular product from the tank when the tank is in the second position.2. Hopper according to claim 1, further comprising a hook mounted on the tank, and wherein the container comprises a shackle, hook is held when the container is attached removably to the tank.3. Silo according to claim 2, wherein the hook is installed near the upper end of the tank and is located at a distance from the side wall of the container, wherein the container is held firmly against the upper end of the side wall when the container is attached removably to the tank.4. Silo according to claim 3, wherein the side wall includes first and second angled wall elements which intersect at a point along the axis which passes through the hook.5. Silo according to claim 2, further comprising a grid attached to the upper end of the tank.6. Silo according to claim 5, wherein the reservoir comprises a mounting plate extending across the top of the tank, in which the hook is mounted on the mounting plate, and wherein the mounting plate is positioned under the grate.7. Silo according to claim 6, wherein the hook extends from the mounting plate through a hole in the grid.8. Silo according to claim 1, further comprising a screw disposed in the tank and configured to supply granular product discharge opening.9. A hopper as claimed in claim 1, wherein t
