Abo exklusiv

Wissenschaftliche Zeitschriften

Mehr über das wissenschaftliche Verlagsprogramm erfahren Sie im Zeitschriften-Überblick im » Ulmer-Zeitschriftenkiosk

Evaluation of trials on minimum effective dose related to the needed dose of herbicides

Summary
The complete article is written in German
For the authorisation of plant protection products data have to be submitted demonstrating that the applied dose is necessary to achieve sufficient efficacy. Fixing the minimum effective dose is an essential requirement laid down in the German Plant Protection Act in connection with Directive 91/414/EEC. Due to the reduction programme of chemical plant protection the minimum effective dose is of special relevance. Long-term practical experiences and investigations have indicated that in certain cases the needed dose is much lower than the authorised one. Therefore during the efficacy assessment a more extensive and systematic evaluation of the herbicide potential may be required in order to deliver information for the users. Trials on minimum effective dose are principally appropriate to quantify extend and conditions where doses can be reduced without a loss of effectiveness. Therefore a sufficient number of trials at different climatic and agricultural conditions is needed as well as a good documentation and evaluation. Corresponding requirements are stated in the EPPO guidelines, especially in PP 1/225 (Minimum effective dose). This paper suggests how to improve the process and evaluation of efficacy trials and how to implement the findings in order to specify the needed dose.

german version

Keywords/Stichworte:Minimum effective dose; pesticide reduction programme; registration; effectiveness

Downloads: (Hinweis zu PDF-Dokumenten)

Download (Full Article in german) (PDF)

Autor:A. VERSCHWELE, P. ZWERGER, Institut für Unkrautforschung, Biologische Bundesanstalt für Land- und Forstwirtschaft, Messeweg 11-12, D-38104 Braunschweig, E-Mail: a.verschwele@bba.de

Drucken Weiterleiten