輪作
Crop rotations are often used to avoid the depletion of soil nutrients and the buildup of soil pathogens. However, crop rotation can serve to geographically distance a crop from known locations of "Delia" populations by planting a crop from a different plant family following the harvest of the host crop favoured by the pest. While crop rotation may be effective on certain soil- inhabiting pests that have low mobility and low dispersal capabilities, this practice is not commonly seen as a control for specialist "Delia" species such as "D. radicum" and "D. antiqua" since they can disperse 2000–3000 meters from the site of infestation and can have a wide host range.