PP 1/348 (1) Efficacy evaluation of herbicides when long‐term control of perennial weeds is claimed

PP 1/348 (1) Efficacy evaluation of herbicides when long-term control of perennial weeds is claimedSpecific scope: This Standard provides detailed descriptions for assessments of perennial weeds when long-term control of perennial weeds is claimed in perennial crops, in annual crops, between crops, and in non-crop areas.This Standard is in addition to the recommendations presented in existing specific EPPO Standards for efficacy evaluation of herbicides.The Standard mainly focuses on time and frequency of the assessment during the year following the application.The Standard also provides details about the information that should be recorded in efficacy trials and that have an indirect impact on efficacy.