An initial experiment consisted of evaluating the weed control potential of a single dose of a series of herbicides listed in the manual on organic agriculture inputs (Manuel d’intrants biologiques) with a view to eliminating ineffective products. The herbicides were applied to two weed species (Chenopodium album and Echinochloa crus-galli) at the two-leaf stage. In a second experiment, products shown to be effective in the first phase were tested at different doses on the same weed species at the same stage to determine the optimum dose. The selected oils were also mixed with a biologically neutral liquid soap to check whether the soap has a synergistic effect that could reduce the amount of oil required. In a third field experiment, the most promising products were applied directly at the junction between the plastic and the soil to test their effectiveness on plants naturally present in the field.
From 2015 to 2016
Pest, weed, and disease control, Organic farming
This project will lead to promising weed control products for organic farmers.
Growing Forward 2 | Ministère de l'Agriculture, des Pêcheries et de l'Alimentation du Québec | Agriculture and Agri-Food Canada | AEF-Global
Using a split-split-plot design, this study tested three variables: soil tillage, crop rotation in organic production, and fertilization with manure or compost.
Researcher: Caroline Côté
This project seeks to create farmer partnerships in which participants work on implementing a three-year forage crop rotation protocol in potato and field crop fields.
Researcher: Richard Hogue
There is a great need to test green manure as a main source of nitrogen for potatoes as they help to maintain soil quality and control weeds.
Researcher: Christine Landry