A seeder (seed drill) is a device used in agriculture that sows seeds for crops by positioning them in the soil and burying them to a specific depth. This ensures that seeds will be distributed evenly.
The seeder sows the seeds at the proper seeding rate and depth, ensuring that the seeds are covered by soil. This saves them from being eaten by birds and animals or being dried up due to exposure to the sun. With seeder machines, seeds are distributed in rows, however, the distance between seeds along the row cannot be adjusted by the user as in the case of vacuum precision planters. The distance between rows is typically set by the manufacturer. This allows plants to get sufficient sunlight, nutrients, and water from the soil. Before the introduction of the seed drill, most seeds were planted by hand broadcasting, an imprecise and wasteful process with a poor distribution of seeds and low productivity. The use of seeders can improve the ratio of crop yield (seeds harvested per seed planted) by as much as nine times. The use of seeder saves time and labor.