Weed seed shatter in spring wheat in Alberta

Abstract: The efficacy of harvest weed seed control depends on the extent of seed shatter of targeted weeds. Seed shatter of nine weed species, namely wild oat (Avena fatua L.), green foxtail [Setaria viridis (L.) P. Beauv.], wild mustard (Sinapis arvensis L.), cleavers (Galium spurium L. and G. aparine L.), spiny annual sow thistle [Sonchus asper (L.) Hill], lambsquarters (Chenopodium album L.), redroot pigweed (Amaranthus retroflexus L.), round-leaved mallow (Malva pusilla Sm.), and kochia [Kochia scoparia (L.) Schrad.] was measured in spring wheat (small-plot trials or producer fields) from 2014 to 2016 near Lacombe and Lethbridge, Alberta. Seed shatter was assessed using shatter trays collected periodically during crop ripening, as well as at swathing and direct-harvest (direct-combining) stages. IfThe accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author