Nonselective herbicides require a wide safety zone to prevent crop damage. Consequently hoe drills are required for inversion of materials such as atrazine or trifluralin. Disk drills, however, can be used where cereals are tolerant of applied herbicides, such as diclofop. Herbicide distribution achieved by the inversion process. Herbicide distribution and safety zones produced by inversion using hoe openers.
Inversion is a shortened modification of standard soil incorporation.
Seed is then placed below this zone. Inversion uses the drill to incorporate and redistribute the herbicide and eliminates tillage operations. This conserves time, labor and plant residue cover. Thus the inversion process is well suited for conservation tillage systems. Using inversion techniques requires agronomic practice similar to other farming methods.