The following is an unpaid, unsolicited product endorsement.
The blade-looking thing in the photo above is a small plow. Behind the plow is a groove through which the seeds are dropped from the hopper to the ground.
Four times the results / one fourth the effort
We didn't intend on conducting a comparison by planting a row without the seeder, but we ended up doing so because there wasn't a plate/wheel with cups big enough for the butter beans! We were sorely disappointed by that fact, but were later relieved to learn that additional wheels can be purchased which will fit virtually any size seed. Anyway, since we didn't have the right wheel for the butter beans, and the butter beans needed to be planted, we took the opportunity to see how long it took for one person to open a furrow, plant the seeds, and cover the seeds in one row. Answer: six minutes. Yep, it took the same time to do one row by hand that it took to do four rows using the seeder. Amazing.