Management of black-grass (Alopecurus myosuroides Huds.) in winter wheat and taking into account the soil activity of post-emergence herbicides
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DOI:
http://dx.doi.org/10.22029/jlupub-16640Abstract
The emergence of black-grass (Alopecurus myosuroides) was observed over three growing seasons (2009-2012) on agricultural fields at different locations within Hessen (Rauischholzhausen, Gießen and Wicker) and Germany. The emergence pattern generally varied within years, locations and cultivation systems. At the experimental station Rauischholzhausen, under low tillage conditions, A. myosuroides emerged steadily between September and May in all years. Peak emergence of about 75-90% occurred after sowing until the middle of October, followed by continuous emergence until winter by 9-24% and another peak of 1-12% in the spring. Observations confirm that a prolonged emergence with late flushes of black-grass usually occur before winter and/or in the spring. It was concluded that herbicide treatments (pre- and post-emergence) would have to be more robust, containing active ingredients with a long lasting residual component in order to cover the protracted period of black-grass emergence, especially in years with a high dormancy level.Link to publications or other datasets
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Giessen : Laufersweiler