Bekämpfung von Beifußblättriger Ambrosie (Ambrosia artemisiifolia L.) in Mais, Getreide, Grünland und Nichtkulturland mit Herbiziden

Abstract

In Brandenburg and Saxony numerous locations of Ambrosia artemisiifolia of low density have been reported. Furthermore there are, especially in the state Brandenburg, agricultural areas with a high density of A. artemisiifolia. Field trials in different agricultural crops and in non-crop areas were conducted in 2007 - 2009 to control A. artemisiifolia in its natural population. Leaf- and soil active herbicides were tested according to current agricultural practice. It was recorded, that germination of A. artemisiifolia occurred in 2 or 3 distinct periods. The herbicide treatments in maize were carried out at 1 - 6 leaf stage and between heights of 1 – 15 cm of A. artemisiifolia. The herbicides Calaris (mesotrione + terbuthylazin), Clio Star (topramezone + dicamba), Laudis (tembotrione), Clio (topramezone), Effigo (picloram + clopyralid), Callisto (mesotrione) and Arrat (dicamba + tritosulfuron) achieved an efficacy of up to 100 %. MaisTer Flüssig (foramsulfuron + iodosulfuron) achieved an efficacy of 50 %. Cato (rimsulfuron) was not effective against A. artemisiifolia. The herbicides Ariane C (clopyralid + fluroxypyr + florasulam) und Amario (clopyralid + fluroxypyr + MCPA) achieved an efficacy of 100 % in cereals. Banvel M (MCPA + dicamba) and Simplex (fluroxypyr + aminopyralid) controlled A. artemisiifolia well in grassland. Non-selective active substances like glyphosate and glufosinate are appropriate to control A. artemisiifolia in non-crop areas. The herbicide treatments in cereals and non-crop areas were carried out at 1 - 32 leaf stage between heights of 1 - 25 cm of A. artemisiifolia. Organic farming shows a reduction of A. artemisiifolia taking adequate agricultural measures. However further spread of A. artemisiifolia cannot be prevented in organic farming.

Keywords

• agricultural crops
• chemical control
• efficacy
• field trial