Phytosanitary Certification Issuance and Tracking, PCIT, is a web-based certification program administered by the United States Department of Agriculture, Animal Plant Health Inspection Service (USDA-APHIS). PCIT is used to issue, store and track electronic copies of state and federal export certificates, including phytosanitary certificates. All exporters of nursery and Christmas tree stock are required to use the PCIT system to submit requests for state and federal phytosanitary certificates and other export certificates.