Telone is generally applied as a pre-plant fumigant to reduce nematode populations and increase cotton yield. Telone can be applied using conventional subsoilers, reduced tillage applicators, or Yetter coulters. Since this is a fumigant, Telone needs placement of at least 11-12 inches beneath the soil surface to ensure adequate dispersion. The concept of nematode management zones makes the application of Telone extremely attractive since areas of a field can be clearly defined that will respond to the application of this fumigant. These areas can be differentiated by soil type or texture, intensive soil sampling for nematodes, aerial imagery, or yield monitor data. Additionally, test strips can be applied to further refine the areas of a field where a significant yield response occurs. Treatment zones can be fairly simple requiring a single rate of Telone or no fumigation at all. The fumigant is applied with the normal Telone applicator, a controller to turn on or off the application of the fumigant, a computer with variable rate software, and a GPS receiver to track movement through the various zones.