Night spraying outperforms dawn for weed management

November 13, 2015

KEY PRACTICE: Midday herbicide applications are most effective for canola; midnight application for grassy weeds.

PROJECT TITLE, LEAD RESEARCHER: “Night spraying — Pesticide efficacy with night time application (2012-14),” Ken Coles, Farming Smarter


Any reduction in herbicide efficacy quickly impacts the return on input investment. With the short Prairie growing season, canola has to be seeded and sprayed in a short window, and timing is critical to optimum performance. This study shows that nighttime herbicide application could be useful as an alternate timing when daytime conditions are poor, helping growers avoid the economic and environmental consequences of waiting for ideal daytime conditions.

Open the PDF to read the entire research summary from the 2015 Science Issue of Canola Digest

You can also read the 2015 Science Issue of Canola Digest as a flipbook

Visit the Canola Research Hub website to search the database of grower funded research

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