Agronomy Library > Soil Conservation

Dandelion Control in Direct Seeding Systems
Author: Rob Dunn (AAF) and Dr. Jim Moyer (AAFC)
Date Created: June 26, 2006
Last Reviewed: June 26, 2006

Dandelion is a troublesome perennial weed in annual crops, and since the 1980s the relative abundance of dandelions has increased significantly in western Canada. Its distribution in fields is not necessarily related to the level of tillage practiced within that field but more likely to the cropping history, particularly if that history includes perennial forage in the rotation in which dandelion remained uncontrolled (Frosese and Van Acker 2003). Dandelion is very competitive weed; if remaining uncontrolled, it has the potential to cause significant yield losses in cereal and oil-seed crops (Frosese and Van Acker 2003; Hacault and Van Acker 2006).

Dandelion populations consist of several different genotypes. High seed producing types tend to invade disturbed areas while the lower seed producing, larger, more competitive types, invade pastures and turf. While both types can be found in direct seeded fields, the larger, more competitive types tend to be more difficult to control. 

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