March 29, 2018
In February of this year,
USDA approved $17.5 million in emergency funding to help
Pennsylvania combat the spotted lanternfly (Lycorma delicatula). Plant protection
officials warn this invasive pest can cause substantial economic damage, as it
feeds on a wide variety of host plants and crops, including almonds, apples,
grapes, hops, stone fruits, [...]
October 27, 2017
The fall armyworm (Spodoptera frugiperda) is native to warm regions of the Western hemisphere.
In the United States, ideal climates in the southern regions of Florida and Texas provide overwintering
habitat, allowing [...]
August 30, 2017
As summer starts to fade and autumn approaches, there is much variability in the weather. Some days
are rainy and humid, others are hot and dry, and the nights are noticeably cooler—ideal conditions to
see symptoms of powdery mildew on plants, trees, fruits, or [...]
June 27, 2017
The polyphagous shot hole borer (PSHB), an ambrosia beetle known as Euwallacea sp., has become a serious pest
in southern California, threatening urban, forest, and agricultural hardwood trees and [...]
March 10, 2017
Chondrilla juncea (rush skeletonweed or hogbite) is an invasive, perennial flowering plant introduced in
parts of Australia, South America, and North America. In the U.S., the weed is classified as noxious,
prohibited, or banned in nine western states and present in sixteen states. It can displace native
plants, like the threatened [...]
December 21, 2016
This set of six IDaids was selected to assist in identification needs following a recent confirmation from the California Department of Food and Agriculture that Phloeotribus scarabaeoides (olive bark beetle) [...]
October 17, 2016
This set of IDaids is the promised follow-up to the June article we published on Xanthomonas pathovars. These pathovars (pathogenic varieties within a species, abbreviated “pv.”) are characteristically [...]
July 29, 2016
This selected set of IDaids spotlights five posters displayed at the 2016 National Plant Diagnostic Network (NPDN) 4th National Meeting, a four-day event consisting of workshops, technical presentations, and poster sessions concentrating on topics for [...]
June 20, 2016
We were motivated to select this set of IDaids by a recent quarantine expansion for citrus canker in Texas. Citrus canker is one of many plant diseases caused by Xanthomonas species. Xanthomonas pathovars (pathogenic varieties within a species) tend to be [...]
May 17, 2016
We’ve selected this set of five IDaids from over 50 (in ITP’s 3,300+ IDaid collection) that concern ants. This set was inspired by the IPPC Secretariat’s recent call for technical resources to support [...]