Soil nitrogen dynamics in canola agroecosystems of eastern Canada

Canola (Brassica napus L.) is a nitrogen (N)-demanding crop, so tissue N analysis should be related to soil N supply. We evaluated canola N uptake in relation to soil N pools in plots receiving 0, 50, 100, and 150 kg N·ha?1 from urea at three sites in eastern Canada in 2012. Soil N pools varied sign...

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Bibliographic Details
Published in:Canadian Journal of Soil Science 2022-06, Vol.102 (2), p.567-571
Main Authors: Ejack, Leanne, Gurung, Bineeta, Seguin, Philippe, Ma, Bao-luo, Whalen, Joann K.
Format: Article
Language:English
Subjects:
Absorption
Agricultural ecology
Agricultural ecosystems
Analysis
Brassica
Brassica crops
Brassica napus
Canola
colza
culture des brassicacées
Developmental biology
fertilisation adaptée au site
Flowering
mineral N
N minéral
Nitrogen
nitrogen fertilizer guidelines
Nitrogen fertilizers
Pools
Rape plants
rapeseed
recommandations sur les engrais azotés
SHORT COMMUNICATION
site-specific fertilization
Soil dynamics
Soils
Urea
Urea as fertilizer
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Summary:Canola (Brassica napus L.) is a nitrogen (N)-demanding crop, so tissue N analysis should be related to soil N supply. We evaluated canola N uptake in relation to soil N pools in plots receiving 0, 50, 100, and 150 kg N·ha?1 from urea at three sites in eastern Canada in 2012. Soil N pools varied significantly at the rosette, flowering, pod filling, and maturity stages, but responded less predictably to urea. Canola N uptake was inconsistently related to soil N pools and urea input. This confirms the importance of site-specific N fertilizer management when growing canola in eastern Canada.
ISSN:0008-4271
1918-1841
1918-1833
DOI:10.1139/CJSS-2021-0078