Weed control methods to reduce the number of viable seeds in the soil are limited in organic production. Biofumigation could be an attractive option for increasing the mortality of dormant seeds. Biofumigation uses plants naturally rich in glucosinolates (especially the cabbage family), which release toxic volatile compounds (thiocyanates and isothiocyanates) as they decompose. The aim of this project was to explore the potential of biofumigation for reducing weed seed banks and its long-term impact on weed communities. Two experiments were set up at the Organic Agriculture Innovation Platform in Saint-Bruno-de-Montarville, Québec. The first was a greenhouse study on four generations of weeds and the second was a three-year field trial.
From 2014 to 2018
Pest, weed, and disease control, Organic farming
This technique being tested at IRDA could compensate for the lack of weed control options available to organic growers.
Agriculture and Agri-Food Canada | Organic Science Cluster II
This project was aimed at determining potassium doses (5 doses) to apply before planting on nitrogen-fertigated cucumber crops grown on plastic mulch.
Researcher: Christine Landry
The fungal pathogen Helminthosporium solani causes silver scurf, a disease that is hard to detect, both in the soil and on harvested potatoes.
Researcher: Richard Hogue
Development of weeding strategies and methods that will reduce weed pressure on carrot crops, especially row-crop carrots, which appear to be the most problematic.
Researcher: Maryse Leblanc