These Regulations prescribe the procedures following which the State Plant Protection Service shall issue a certificate (Annex 1) regarding the rights to perform trials of efficiency examinations specified in regulatory enactments regarding the registration of plant protection products. A decision regarding the issuance of a certificate shall be taken for each type of trial separately. A place of the trial, a group of cultivated plants and a usage category of a plant protection product shall be indicated in the certificate. The period of validity of a certificate shall be five years.