No- till often is called slot till because a narrow slot is opened during planting.
All planters actually do at least some tillage during planting.
Equipment Most newer, heavy frame conventional planters with double disk openers can plant into untilled soybean stubble without additional equipment. Coulters Planting into cornstalks or a forage crop usually requires a coulter mounted ahead of the seed opener. Mounting the coulter on the planter unit is preferred for a close linkage with depth of the individual seed openers. A second option is to mount the coulter on the planter frame. Various types of coulters are used.