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APHIS Removes Pale Cyst Nematode (Globodera pallida) Associated Fields From Regulation in Idaho

January 11, 2022

Subject:  APHIS Removes Pale Cyst Nematode (Globodera pallida) Associated Fields From Regulation in Idaho

To:   State and Territory Agricultural Regulatory Officials

On November 22, 2021, the Animal and Plant Health Inspection Service (APHIS) released three pale cyst nematode (PCN) associated fields, which have a combined area of approximately 513 acres, from regulation in Idaho. One field is in Bingham County, and the other two fields are in Bonneville County. APHIS released the fields because the fields have completed a release protocol comprised of a sequence of surveys with negative laboratory results for PCN, in accordance with 7 CFR §301.86, subpart 3(d)(2). 

With these changes, the current regulated area is 6,570 acres, of which 3,446 acres are infested fields and 3,124 are associated fields. The infested fields are in an 8.5-mile radius that spans a portion of northern Bingham County and southern Bonneville County. 

APHIS will follow up with a notice of this change to the regulated area in the Federal Register. The specific PCN-regulated areas are listed on the following website:

 For additional information about the PCN program, please contact the National Policy Manager,

Lynn Evans-Goldner, at (301) 851-2286. 



Mark L Davidson, DVM, MS

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