Efficacité de différentes formes d’azote dans la culture du bleuet nain sauvage
Lafond, J. (2018). Efficacité de différentes formes d’azote dans la culture du bleuet nain sauvage. Canadian Journal of Soil Science, [online] 98(2), 381-384. http://dx.doi.org/10.1139/cjss-2017-0117
Plain language summary
The objective of this project was to evaluate the effectiveness of different forms of nitrogen fertilizer in lowbush blueberry cultivation and to determine their impact on soil pH and nitrogen. Nitrogen fertilizers consist mainly of ammonia; they incorporate elements such as sulphur, carbon and calcium, which affect their ammonia concentration and their decomposition in the soil. Only ammonia containing sulphur (ammonium sulphate) helped lower and maintain the soil pH, which is desirable in blueberry cultivation, while also ensuring high nitrogen availability to the crop. The different forms of nitrogen fertilizer had no impact on fruit yields.
The objective was to evaluate the wild blueberry response to different nitrogen (N) forms and to determine their impacts on soil pH and nitrogen. Only ammonium sulfate decreased and maintained soil pH at adequate levels and ensured N availability to the culture. Crop productivity was not affected by N forms.