Mechanical methods of manipulating the habitat include disking, rolling, mowing and other tractor implements. At the Delair Division, cooperative farmers help with the task of setting back undesirable species by planting fields with row crops which require the turning over of soils and application of selective herbicides. For units where farming is not the preferred management, refuge staff target these areas with one or possibly a combination of techniques.
Turning over the soil with mow-board plows and/or disks serve to break up and expose roots of undesirable plants while returning buried seed from favorable species back to the surface. Rolling helps to do the same, however the activity allows for work to be completed during wet conditions. Mowing is completed before undesirable plants produce seed, thus allowing for later growing, more favorable plants to out compete them.