A hopper for a seed drill, having: - a hopper wall surrounding a hopper volume on multiple sides; - a partition wall, which is arranged in the hopper volume, separating it into partial volumes, such that a first and a second partial volume (5, 6) are formed, which are separated from each other by means of the partition wall, and are each configured for receiving a granular material such as seed grains, fertilizers or the like; - a first sump, which is associated with a first bottom opening in the region of the first partial volume and is configured for discharging the granular material in the first partial volume from the hopper volume; - a second sump, which is associated with a second bottom opening in the region of the second partial volume and is configured for discharging the granular material in the second partial volume from the hopper volume; - a wall opening in the partition wall, through which the granular material can pass from the first to the second partial volume (5, 6) and vice versa when the wall opening is open; and - a closure member, which is supported in a pivotable manner in a corner region in which the partition wall meets a bottom of the hopper wall, and which can be pivoted between a first and a second position, such that the closure member - opens the first bottom opening and closes the wall opening when it is displaced from the first to the second position, and - opens the wall opening and closes the first bottom opening when it is displaced from the second to the first position; characterized in that the partition wall has a displaceable wall section, which forms an upper part of the partition wall, which upper part is arranged adjacent to an opening of the hopper located on the deck side, and which, by means of displacing it between a first and a second displacement position, can change a volume ratio between the first and the second partial volume (5, 6). - a hopper wall surrounding a hopper volume on multiple sides; - a partition wall, which is arranged in the hopper volume, separating it into partial volumes, such that a first and a second partial volume (5, 6) are formed, which are separated from each other by means of the partition wall, and are each configured for receiving a granular material such as seed grains, fertilizers or the like; - a first sump, which is associated with a first bottom opening in the region of the first partial volume and is configured for discharging the granular material in the first partial volume from the hopper volume; - a second sump, which is associated with a second bottom opening in the region of the second partial volume and is configured for discharging the granular material in the second partial volume from the hopper volume; - a wall opening in the partition wall, through which the granular material can pass from the first to the second partial volume (5, 6) and vice versa when the wall opening is open; and - a closure member, which is supported in a pivotable manner in a corner region in which the partition wall meets a bottom of the hopper wall, and which can be pivoted between a first and a second position, such that the closure member - opens the first bottom opening and closes the wall opening when it is displaced from the first to the second position, and - opens the wall opening and closes the first bottom opening when it is displaced from the second to the first position; - opens the first bottom opening and closes the wall opening when it is displaced from the first to the second position, and - opens the wall opening and closes the first bottom opening when it is displaced from the second to the first position;