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Flatness is important at planting because it is the only practical way to control average seed planting depth without laborious hand planting of each seed; it is not practical to follow an instruction of (for example) 1-cm planting depth if the contour of the seedbed varies by 2 cm or more between adjacent spots.
A 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 while being dragged by a tractor. This ensures that seeds will be distributed evenly. The seed drill sows the seeds at the proper seeding rate and depth, ensuring that the seeds are covered by soil.
Hand-pushed broadcast spreader. A broadcast seeder, alternately called a broadcaster, broadcast spreader or centrifugal fertilizer spreader (Europe) or "spinner" (UK), is a farm implement commonly used for spreading seed where no row planting is required (mostly for lawns and meadows: grass seeds or wildflower mixes), lime, fertilizer, sand, ice melt, etc., and is an alternative to drop ...
Incorrect depth, if too deep, would result in germination that would not allow the young plant to break the surface of the soil and prevent sprouting. If they are not sown evenly then there would be a lack of various nutrients from sunlight, oxygen, et cetera, in many crops or plants. Not all seeds are good candidates for broadcast seeding ...
The main function of the field cultivator is to prepare a proper seedbed for the crop to be planted into, to bury crop residue in the soil (helping to warm the soil before planting), to control weeds, and to mix and incorporate the soil to ensure the growing crop has enough water and nutrients to grow well during the growing season.
Loosens and aerates the top layer of soil or horizon A, which facilitates planting the crop. [17] Helps mix harvest residue, organic matter (humus), and nutrients evenly into the soil. [17] Mechanically destroys weeds. [17] Dries the soil before seeding (in wetter climates, tillage aids in keeping the soil drier). [17]