Citrus Clonal Protection Program

The Citrus Clonal Protection Program (CCPP) was established more than 50 years ago under the name Citrus Variety Improvement Program. Today, it stands as a cooperative program between the Citrus Research Board (CRB) and the University of California, Riverside (UCR), California Department of Food and Agriculture (CDFA), United States Department of Agriculture-Animal and Plant Health Inspection Service and the California Citrus Nursery Board (CCNB). The CCPP has been a core program of the CRB since the establishment of the marketing order in 1968. As such, the CRB has been the primary funding agency for day-to-day CCPP activities. Since 2009, the CCPP has been a part of the National Clean Plant Network (NCPN) for specialty crops. USDA-NCPN funding has supplemented CCPP activities in the past few years, providing funding for facilities and equipment upgrades. The CDFA and the CCNB have been providing CCPP with funding to execute the citrus nursery registration program for budwood and seed tree sources. UCR supports CCPP with infrastructure, facilities and all related indirect costs.