When wheels make perfectly ready seed bed for sowing, enables protection of humidity by comprassing upper layer of the soil about down to sowing level.
It prevents seeds to be chilled by comprassing the soil after sowing, seed contacts better with soil, sprouts easier.
Besides, it enables humidity that herb couldn’t use from down to up with capilarity. Marks that wheel side profiles made on soil, cause maximum water retention and minimum water loss.
Wheel that is produced as pipe type has two kinds of usage one filling water in the wheel, the other one putting weight in to the weight box on the wheel.