The exchange of grapevine propagation material across geographic and regulatory boundaries increases the diversity of cultivars and...

There are currently four NCPN-Berries Clean Plant Centers in the U.S. Programs in Arkansas, North Carolina, Oregon, and California...

Two major viral disease threats to the sustainability and profitability of the global wine grape industry are grapevine leafroll disease...

In 1932, Citrus was the first crop in which a disease was associated with a virus (Citrus psorosis virus). This led to the establishment...

Given the size of the CPCNW’s tree fruit program, tightening up their workflow process was the key to releasing more plants in the last...

The NCPN-Hop program at Clean Plant Center Northwest has dramatically increased throughput and the production of clean hop plants through...

EDNA (Electronic Probe Diagnostic Nucleic Acid Analysis) is a powerful new tool that helps protect citrus crops from diseases. It uses...

Several NCPN Clean Plant Centers have been authorized by USDA APHIS to hold Controlled Access Permits, which means they can accept...

International movement of plant material is regulated by national plant protection organizations, and depends on the accurate...

This graphic provides a simplified description of the process that plant material is subjected to before it is deemed “clean” by NCPN...

Citrus is the number one fruit crop in Louisiana. There are several diseases that are extremely detrimental to this industry, namely...

The National Clonal Germplasm Repository for Citrus & Date (NCGRCD) in Riverside, California is currently renovating its existing...

Despite being the only citrus-producing state with no instances of huanglongbing, the Asian Citrus Psyllid is found within the state....

The Alabama Clean Citrus Program focuses on providing pathogen-free cold-hardy citrus propagules--primarily satsuma--for in-state...

Huanglongbing (HLB) or “citrus greening” was first detected in Puerto Rico in 2009; by 2011 it had spread throughout the island. The...

The Texas Citrus Clean Plant Program has grown significantly and expanded in the last several years. Prior to 2013, the Citrus Center...

The Florida Citrus Clean Plant Center is situated within the Bureau of Budwood Registration as part of the Florida Department of...

The Exotic Pathogens of Citrus Collection (EPCC) in Beltsville, Maryland, maintains a unique collection of graft transmissible virus and...

On May 22, 2024, the Citrus Clonal Protection Program (CCPP) at the University of California, Riverside hosted a workshop titled...

Foundation Plant Services at the University of California, Davis, hosts the largest public collection of virus-tested roses in the United...