NDR Dictionary Updates
Clarissa Balbalian (Vice Chair, National Data Committee)
The Communicator: Volume 7, Issue 7, August 2026
The following lists document additions, modifications and deletions to the National Data Repository (NDR) Host and Pest dictionaries that were implemented in July 2026. You can view updates to the NPDN host and pest dictionaries any time by logging into NDR clicking on the Dictionaries tab, selecting the Change Request tab, and selecting Updates from the dropdown menu.
A guideline to understanding data dictionaries in the NDR is available to NPDN members online. NPDN members also have access to an online guideline on how to request new host/pest codes or changes to existing codes. Members must be logged in to access the NDR and the guidelines.
Entries below are listed alphabetically by common name followed by the scientific name appearing in parentheses.
Host dictionary updates
New host additions
None
Modified host codes
None
Deleted hosts*
None
Pest dictionary updates
New pest codes
Crown rot (Erwinia papaya)
Soybean cyst nematode Type 1 (Heterodera glycines T1)
Soybean cyst nematode Type 3 (Heterodera glycines T3)
Soybean cyst nematode Type 4 (Heterodera glycines T4)
Soybean cyst nematode Type 5 (Heterodera glycines T5)
Soybean cyst nematode Type 6 (Heterodera glycines T6)
Soybean cyst nematode Type 7 (Heterodera glycines T7)
Mastigosporium leaf spot (Mastigosporium sp./spp.)
Wood rot fungus (Perenniporia robiniophila)
Modified pest codes
Soybean cyst nematode Type 0 (Heterodera glycines T0)
Soybean cyst nematode Type 2 (Heterodera glycines T2)
Basal Rot (Fusarium oxysporum f. sp. narcissi)
Fusarium wilt; Near wilt (Fusarium oxysporum f. sp. pisi)
Bacteria identification (Chromobacterium violaceum)
Wood rot fungus (Vanderbylia robiniophila)
Deleted pest codes*
None
*The NPDN does not delete any data. Deletion means that as of the date of the change, that host or pest code is no longer viable and the choice has been eliminated from the NDR host and/or pest dictionary.
