canola - Canadian Agronomist

17 Jul GM biotechnology makes significant contributions to crop production and the environment

Posted at 21:43h in Agronomy

Research by PG Economics Limited, a United Kingdom advisory and consultancy firm, found that genetically modified (GM) crops have increased global food, feed and fibre production by nearly 1 billion tonnes (1996-2020). At the same time, the technology helped farmers reduce the environmental footprint associated...

10 Jul Weed shifts in herbicide-resistant canola systems

Posted at 22:56h in Weeds

Since the introduction of herbicide-resistant canola systems, difficult-to-control species such as cleavers, volunteer canola, green foxtail, and foxtail barley have increased in abundance. Green foxtail was associated with glyphosate-resistant systems. Wild oat was predominant in longer canola rotations with glufosinate and imidazolinone-resistant canola. Herbicide-resistant (HR) canola...

29 May Kochia control in glufosinate-resistant canola

Posted at 21:58h in Weeds

Single and sequential applications of glufosinate provided excellent control of Group 2 and Group 2 + 9 resistant kochia. Treatments containing sulfentrazone (which were experimental and not registered) caused excellent control but unacceptable crop injury. Layering strategies with ethalfluralin and/or carfentrazone followed by glufosinate may...

14 May Climate change trends on the Prairies

Posted at 16:02h in Agronomy

Research found increases in growing degree days, corn heat units, the number of frost-free days, and average, maximum and minimum air temperature on the Prairies. Average annual precipitation and growing season precipitation have increased in Canada, but western Canada had increases in some regions and...

07 May Cabbage seedpod weevil review

Posted at 21:51h in Insects

Cabbage seedpod weevil continues to expand across the Prairies, contributing to yield losses of 5 to 30%. Insecticidal control remains the main management strategy despite decades of research into alternative biological and cultural methods of control. The cabbage seedpod weevil, Ceutorhynchus obstrictus (Marsham) (Coleoptera: Curculionidae), is native to...

09 Apr Enhanced efficiency fertilizers had little impact on yield

Posted at 16:56h in Soils and Fertility

In this 2-year study, there was no significant benefit of a urease inhibitor, with or without a nitrification inhibitor, on canola and wheat N removal, N uptake, nitrogen use efficiency or yield. These inhibitors also did not significantly reduce the amount of leached nitrate in...

27 Mar Revising Lygus bug economic injury levels

Posted at 21:05h in Insects

The overall Economic Injury Level was found to be around 9 to 23 Lygus bugs per 10 sweeps using $15.47/bu ($682/tonne) canola prices. However, insecticide trials on farmers’ commercial fields found that yield was protected from Lygus feeding with a foliar insecticide application at the...

12 Mar Starter fertilizer increased corn grain yield

Posted at 19:40h in Soils and Fertility

Starter phosphorus (P) and zinc (Zn) fertilizer increased early-season growth, plant height, P concentration, and uptake of P and Zn in plant tissue, relative to the unfertilized control. In some cases, starter fertilizer reduced days to maturity and grain moisture content. The largest responses were...

08 Feb Optimizing nitrogen fertility for hybrid canola

Posted at 19:52h in Soils and Fertility

Canola yield increased by up to 40% with increasing N rate up to 134 lbs/ac (150 kg/ha) pre-plant (i.e. close to seeding) application via broadcast or banding. There was no significant difference in yield between pre-plant only N application and a split pre-plant plus top-dress...

31 Jan No-till improves yield and soil organic carbon in western Canada

Posted at 23:33h in Soils and Fertility

In western Canada, no-till improved wheat yield by 7%, canola by 10%, and legumes like beans, peas and lentils by 9% compared to conventional tillage. These higher yields provide higher carbon inputs into the soil to help increase soil organic carbon and reduce greenhouse gas...