Researcher, agr., Ph.D.
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In highbush blueberry production, mulch is spread around the base of the plants to suppress weed growth. Some mulches may release nitrogen as they decompose, while others, including fresh sawdust mulch, require the addition of nitrogen fertilizer because soil bacteria mobilize nitrogen to decompose this mulch, given its elevated C/N content. While aged sawdust mulch may supply nitrogen, this contribution has not yet been quantified.
Since the current body of information was generated outside Québec, it is necessary to conduct studies under our own climate conditions. We therefore selected two study sites, one in Montérégie and the other in Chaudière-Appalaches, which will receive no mulch, fresh mulch, and aged mulch blended with four nitrogen doses (0, 30, 60, and 90 kg N/ha). Lastly, this study will determine the nitrogen contribution of mulch mineralization in highbush blueberry cultivation so that mineral nitrogen fertilizer applications can be better tailored to actual crop requirements.
From 2019 to 2022
Project duration
Fruit production
Activity areas
Fertilizer management
Service
This project will enable growers to customize their mineral nitrogen fertilizer applications to more effectively meet highbush blueberry crop requirements.
Ministère de l'Agriculture, des Pêcheries et de l'Alimentation | Groupe Pleine Terre
Research report • Christine Landry, Stéphanie Houde, Julie Mainguy
Joly-Séguin, V., Deslauriers, G., Landry, C., Mainguy, J., Houde, S. et Lacroix, C.. 2023. . DownloadFlexible management of nitrogen fertilization (fertilizer type and dose) as a function of temperature for better yields in organic cranberry production.
Researcher: Christine Landry
As part of this project, the soil water status at a chosen blueberry farm will be monitored at 40 spots over the course of the production year. We will seek to identify the relationship between water extraction, physicochemical and environmental factors, and yield levels that could help explain yield variability.
Researcher: Carl Boivin