ORIGINAL RESEARCH
Impact of Nitrogen, Sulphur, and Foliar
Applied Thiourea on Growth, Oil Yield,
and Fatty Acid Profile of Canola
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1
Department of Agronomy, University of Agriculture Faisalabad, 38000, Faisalabad, Pakistan
2
College of Tourism and Geographic Sciences, Baicheng Normal University, Baicheng 13700, Jilin, China
3
Department of Agronomy, College of Agriculture, University of Sargodha, Sargodha, Pakistan
4
Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology,
Rahim Yar Khan 62400, Pakistan
5
Department of Botany, University of Agriculture Faisalabad, 38000, Faisalabad, Pakistan
6
Research Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang China
7
Botany and Microbiology Department, College of Science, King Saud University,
P.O. Box. 2460, Riyadh 11451, Saudi Arabia
8
Plant Production Department, College of Food and Agricultural Sciences, King Saud University,
P.O. Box. 2460, Riyadh 11451, Saudi Arabia
Submission date: 2023-11-25
Final revision date: 2024-02-11
Acceptance date: 2024-03-22
Online publication date: 2024-09-03
Publication date: 2025-01-28
Corresponding author
Wang Lihong
College of Tourism and Geographic Sciences, Baicheng Normal University, Baicheng 13700, Jilin, China
Athar Mahmood
Department of Agronomy, University of Agriculture Faisalabad, 38000, Faisalabad, Pakistan
Pol. J. Environ. Stud. 2025;34(3):2337-2347
KEYWORDS
TOPICS
ABSTRACT
Canola (Brassica napus L) is cultivated on different types of soils, and as a result of that, many
issues occur related to nutrition. Field and pot experiments were accomplished to determine canola
performance in response to different sulfur and nitrogen sources. In this experiment, canola cv. “Super
canola” was grown with five different nutrient treatments maintained as recommended NPK, nitrogen
220 kg ha-1, sulfur 60 kg ha-1, nitrogen-sulfur at 220-60 kg ha-1 and foliar-applied thiourea at 1000 mg L-1
at flowering initiation and pod formation. Application of thiourea improved the growth which was
significantly similar to soil-applied N-S. Thiourea application also increased oil contents followed by
a combined application of soil-applied N-S. Thiourea and N-S increased protein contents ranging from
19.28% to 23.50%. Among fatty acids, thiourea showed higher concentrations in linoleic (18.73%),
oleic (58.39%), and linolenic acid (8.29%) while lowering the erucic acid concentration (2.92%). The highest erucic acid contents were observed when recommended NPK was applied. In conclusion,
foliar-applied thiourea has the potential to boost canola growth, yield, oil quality, protein contents, and
fatty acid profile while also being an economically viable and alternative source of N and S.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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