For lambs quarters, only one mode of action has resulted in cases of resistance since 2011.
Several cases of resistance to photosystem II inhibitors (HRAC 5) have been confirmed: this resistance is not widespread throughout Switzerland, being mainly found in the Bernese Seeland. The resistance was confirmed for the first time in 2012 in the Cantons of Bern and Zurich.
Annual summer dicot of the Amaranthaceae family
Colonised crops |
Beetroot, maize, soybean, summer and winter cereals, potatoes, vegetables |
Favourable conditions |
Low-diversity rotations, early sowing of crop, infrequent ploughing |
Preferred soils |
Sandy or silty-sandy, moist, nitrogen- and humus-rich with a wide variety of pH. An indicator plant for salinisation by soluble mineral fertilisers, particularly potassium fertilisers. |
Germination window |
Spring and summer |
Pollination |
Wind-pollinated |
EPPO code |
CHEAL |
