Herbicide tests in Valerian (Valeriana officinalis L.) in Thuringia.

摘要

Between 1998 and 2008 12 experiments with 25 herbicides were carried out in valerian in experimental stations and on valerian fields of Thuringian farms. The main objective of the tests was to get the necessary data for the authorization procedure according to the regulations of paragraph 18 a PflSchG. The use oft the herbicides Devrinol FL, Lentagran WP, Stomp Aqua and Stomp Raps is authorized for the application in valerian according the regulations of paragraph 18 a PflSchG. The herbicides Basagran, Boxer, Roundup UltraMAX and Targa Super can be used in valerian according the regulations of paragraph 18 b PflSchG. Further experiments with herbicides in valerian are intended to the authorization to more herbicides and to unsolved problems with the weed control in this crop like for example the often insufficient effects of the recently authorized herbicides against Solanum spec, Galinsoga spec, Polygonum spec. and other weeds.