A field experiment was conducted in 2002-2006 to investigate the severity of weed infestation and roots yields in relation to weed management methods in American ginseng (Panax qumquefolium L.) cultivation. Hand-made weeding was compared to various herbicides treatments. Herbicides application in American ginseng cultivation significantly limited species composition and number of weeds per 1 m2. The effects of application of 2.4 D and dicamba combined with fluazifop-p-butyl were superior to those of hand-made weeding, whereas other preparations (propyzamide and fluazifop-p-butyl, linuron and flu- azifop-p-butyl as well as prometryn and fluazifop-p-butyl) damaged ginseng plants which finally led to decrease of raw material.
American ginseng belongs to the Araliaceae family and, along with Asian ginseng (Panax ginseng), traditionally its roots have been used for a wide range of beneficial pharmacological effects [1], Its commercial cultivation has been conducted over the last century in order to supply worldwide demand and due to depletion of wild ginseng.
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