Clarissa Balbalian (Chair, National Data Committee)
The Communicator: Volume 6, Issue 4, April 2025
The following lists document additions, modifications and deletions to the National Data Repository (NDR) Host and Pest dictionaries that were implemented in March. You can view updates to the NPDN host and pest dictionaries any time by logging into NDR clicking on the Dictionaries 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
False Yucca (Hesperaloe sp./spp.)
Myoporum (Myoporum sp./spp.)
Modified Hosts
Mixture; Kentucky Bluegrass;Ryegrass (Poa; Lolium pratensis; perenne)
Mixture; Kentucky Bluegrass; Red Fescue (Poa; Festuca pratensis; rubra)
Mixture; Kentucky Bluegrass; Bentgrass (Poa; Agrostis pratensis; stolonifera)
Mixture; Spruce; Fir (Picea; Abies sp./spp.)
Mixture; White Pine; Red Pine; Jack Pine (Pinus strobus; resinosa; banksiana)
Mixed Deciduous Forest (Mixed species)
Mixture; Aspen; Birch (Populus-betula sp./spp.)
Mixture; Elm; Ash; Cottonwood (Ulmus; Fraxinus; Populus sp./spp.)
Mixture; Maple; Beech; Birch (Acer; Fagus; Betula sp./spp.)
Broadleaf Weeds (Mixed species)
Rangeland (Mixed species)
Mixed Fruit (Mixed species)
Mondell Pine (Pinus eldarica)
Spirea (Spiraea media)
Deleted Hosts*
None
Pest Dictionary Updates
New Pest Codes
Chili pepper mild mottle (Tobamovirus Chili Pepper Mild Mottle Virus)
Sineguelas Leaf Beetle (Podontia quatuordecimpunctata)
Modified Pest Codes
Wood rot fungus; Lion's mane (Hericium erinaceus)
Twig canker (Seimatosporium lichenicola)
Laurel wilt (Raffaelea lauricola)
Wood cockroaches (Parcoblatta sp./spp.)
Campion (Silene sp./spp.)
Maize dwarf mosaic (Various viruses)
Peach stunt disease (Various viruses)
Potato crinkle (Various viruses)
Potato rugose mosaic (Virus complex)
Rice tungro disease (Virus complex)
Triticum mosaic (Various viruses)
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.
