Digging into Research
Light-activated sensor-controlled sprayer reduced the overall chemical use by 23% to 55% and resulted in cost savings of $2.36/ac to $12.48/ac ($5.83 to $30.83/ha) across herbicide treatments for kochia and prickly lettuce control. In recent years, light-activated sensor-controlled (LASC) sprayers have become more popular with custom...
Early maturing crop rotations that included winter wheat had reduced wild oat populations compared to normal or late maturing rotations. This was likely because of increased crop competitiveness, rotational diversity and possibly harvest weed seed control. The evolution of herbicide-resistant wild oats has made wild oat...
Two grower submitted samples were confirmed to have Group 14 PPO inhibitor-resistant kochia from the RM of Newcombe in Saskatchewan and Forty Mile County in Alberta. Dose response bioassays confirmed high resistance to foliar applied Group 14 active ingredients saflufenacil and carfentrazone in a kochia population...
Dose response bioassays confirmed high resistance to foliar applied Group 14 active ingredients saflufenacil and carfentrazone in a kochia population from Kindersley and two populations from North Dakota. Herbicide-resistant kochia has become a serious problem for Prairie farmers over the last two decades. Currently, all kochia...
Fine-tune carfentrazone-ethyl application to kochia at a weed growth stage of up to 5 cm with no branches to help avoid nonlethal herbicide dosing, which can help to reduce the risk of non-target site herbicide resistance evolution. Kochia is one of the most troublesome weed on...
Combine harvesting spread wild oat seeds up to 475 feet (145 m) at population levels of more than 1 seed per square foot (10 seeds/m2). This compared to less than 1 seed/ft2 at 150 feet (45 m) with chaff collection. Wild oat distribution is typically patchy...
Two weeks after metribuzin treatment, chickpea mortality was 25% at the full label rate, and 56% for the 2X rate. Accumulated chlorosis and necrosis were similar for the control and 1/2X rate. The 1X rate significantly reduced pod production by 75% and was similar to...
In addition to genetic, physiological, and environmental factors, farming practices such as harvest timing, and tillage regimes can influence secondary dormancy of volunteer canola seed. Given the documented high heritability of secondary dormancy, it is feasible to reduce secondary dormancy in canola cultivars through plant...
Fall harrowing shortly after harvest increased volunteer canola seedling emergence in the fall, resulting in over-winter kill and reduced volunteer canola persistence. Volunteer canola is an on-going problem for farmers on the Prairies. This is partially because of significant harvest seed losses during combining, and also...
Patch expansion was attributed mainly to natural seed dispersal or seed movement by equipment at time of seeding. Extensive seed shed from plants in patches before harvest or control of herbicide resistant plants by alternative herbicides minimized seed movement by the combine harvester. Wild oat plants...
