Digging into Research
All 15 PRE followed by POST herbicide combinations provided better control of volunteer canola compared with the glyphosate-only control, but tribenuron (i.e. Express SG) followed by bentazon, and tribenuron followed by imazamox plus bentazon (i.e. Viper ADV) provided solutions that were low cost, registered in...
Effective pre-emergent or pre-emergent followed by post-emergent (two-pass) programs tested in this research on the U.S Great Plains should be proactively utilized by growers to manage glyphosate/dicamba resistant kochia in Roundup Ready 2 Xtend (glyphosate/dicamba-resistant) soybean. A similar approach may prove useful for western Canadian...
Redekop Seed Control Unit, an integrated reversible cage mill with blade system that provides Harvest Weed Seed Control, was assessed for volunteer canola control. Blade configuration in combination with chaff feeding rate did not affect volunteer canola control, which remained above 99%. Harvest Weed Seed Control...
Based on wild oat seed viability, early clipping of wild oat panicles before seeds are viable, in short-statured crops, may become a valuable tool for integrated wild oat management. Wild oat is one of the most problematic weed species in western Canada due to widespread populations,...
Cleavers can germinate very early in the spring, making pre-seed burnoff a good way to control the weeds when they’re small and limit cleavers seed in harvested canola. Pre-harvest saflufenacil plus glyphosate may also provide short- and long-term management. This study shows that cleavers populations in...
Fluazifop, quizalofop, clethodim, sethoxydim, and glyphosate can all reduce downy brome and Japanese brome biomass, especially when applied shortly after germination to plants less than 4.3 inches tall —with a tendency for fluazifop and quizalofop to be most effective. Research evaluated the efficacy of glyphosate and...
Soybean grown in narrow rows shortened the critical weed-free period (CWFP) by up to three soybean developmental stages at site-years with increased weed pressure. Low-density soybean stands lengthened the CWFP by one soybean developmental stage compared with higher-density soybean stands. Generally, the cultivar with the...
Seeding a tall cultivar at 80 seeds/ft2 in early May along with the application of an in-crop wild oat herbicide resulted in the greatest stand establishment and crop biomass, as well as the lowest weed biomass in flax. Flax is a poor competitor with weeds, and...
Model predictions suggest that farming can remain profitable without glyphosate by consistently utilizing key non-herbicidal weed management practices combined with robust pre-emergence soil residual herbicide treatments. However, maintaining low weed seed banks will be challenging. The possibility of farming without glyphosate is an important issue facing...
Trends in herbicide resistance management over the past decade were identified and include renewed efforts by the agrichemical industry in herbicide discovery, cultivation of crops with combined (stacked) HR traits, increasing reliance on pre-emergence vs. post-emergence herbicides, breeding for weed-competitive crop cultivars, expansion of harvest...
