Fumigation for nematode management in irrigated potato production systems of Idaho is widely practiced. Spatially uniform fumigation with large scale soil injection equipment is the traditional application method for Telone II. Plant-parasitic nematode species exhibit spatially variable population densities that provide an opportunity to practice site-specific fumigation to reduce chemical usage and production costs. Over the past 3 years 1200 ha of potato production has been site-specific fumigated for Columbia Root Knot (Meloidogyne chitwoodi) nematode control. On average this practice has resulted in a 30% reduction in chemical usage and production cost savings of $180/ha when Telone II is used as the sole-source of nematode suppression. Reductions in usage of Telone II exceed 50% if used in combination with another nematicide such as Vydate CL-V. This combination approach can have production cost savings that exceed $200/ha. Based on farm-gate receipts and USDA inspections provided by potato producers, potato tuber yield and quality have not been adversely affected. Specific details of how site-specific fumigation is implemented along with specific field results will be presented.