(1) Testing procedures prescribed in this program shall conform to NRSP-5 standards or to any other acceptable and approved procedures developed and used for determining the presence of virus diseases in nursery stock.

(2) Sample collection and submission for testing will be done under the direct supervision of the department.

(3) Transmissible virus testing of Prunus material will be conducted once every three years on all registered mother trees and all registered stool-beds for Plum Pox Virus, for ilarvirus every year, and any other testing on an ad hoc basis resulting from symptoms observed during inspection, traceback results, or other just causes for concern. Monitoring will include surveys of the rootstock, budwood, seeds, and fruit.

(4) Upon request, diagnostic test results, test methodologies, and a list of pests will be provided to the department and the importing NPPO. Tests should be approved by the NPPO of the importing country.