Cultivator

A cultivator is defined less by a single fixed design than by its function: stirring and loosening shallow soil with rigid or spring-loaded shanks, tines, or sweeps. This flexible category spans implements used purely for seedbed preparation and implements precisely guided between rows of a standing crop.

1. Shanks, tines, or sweeps mounted on a toolbar are drawn through the topsoil
2. The tools loosen compacted or crusted soil and cut or uproot weeds
3. In row-crop use, shields or guidance systems keep tools working between rows without damaging the crop
4. Working depth and tool spacing are adjusted for the soil condition and crop stage

As a secondary tillage tool, cultivation refines the soil surface after primary tillage, breaking clods and levelling the field ahead of planting. As an in-season row-crop tool, cultivation loosens surface crusting, aerates the topsoil, and removes weeds that compete with the crop for light, water, and nutrients.

Mechanical cultivation is a core practice in organic production systems, where herbicide use is restricted or excluded, and is also used in conventional systems to supplement or reduce reliance on herbicides.

Field cultivator

Wide toolbar with spring-loaded shanks, used for secondary tillage and seedbed levelling.

Row-crop cultivator

Narrower tool sets guided between crop rows for in-season weed control and soil aeration.

Rotary cultivator (rotary tiller)

Powered, rotating tines that intensively mix soil, often used on smaller areas or for finer seedbed preparation.

Cultivation depth, timing, and frequency affect weed-control efficacy, soil moisture conservation, and the risk of disturbing crop roots or compacting soil at a consistent depth over repeated passes. Row-crop cultivation also requires accurate guidance to avoid damaging the growing crop.