Pellet, Didier; Mercier, Edith; Ballestra, Ursula; Keiser, Andreas; Bezençon, Nicola (2003). Optimisation de la fumure soufrée par estimation du risque de carence Revue suisse d'agriculture, 35(4), pp. 161-167. Agroscope
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The experimental results of four growing seasons (1999-2002) were analysed to im-prove a prediction model of sulphur deficiency for winter oilseed rape previously pre-sented in the «DBF 2001» (RYSER et al., 2001). This scoring model based on agrono-mic pedologic and climatic criteria explained 85% of yield variability in response to sulphur fertilisation. In order of importance, the parameters of the model were soil depth, clay content, organic matter and plant-available nitrogen. Moreover, rainfall between October to March, stone content and frequency of organic fertiliser applica-tions were also taken into account. The risk of deficiency was divided into 3 catego-ries. The threshold for low risk was set at a score of 24 points and no S fertilisation was required for oilseed rape grown at low risk sites. The optimum S application of the medium risk with a score from 15 to 23 points was determined at 35 kg S/ha. The high risk of deficiency (score under 15 points) was not represented in the experiment but a proposition of fertilisation as high as 60 kg S/ha has been made. The effects of S fertilisation on total S uptake in the aerial biomass and quality of the harvested grains were also evaluated. A significant increase of total S uptake in response to S fertilisa-tion was observed. Besides, the glucosinolates concentration in the grains also increa-sed significantly with S application for all cases of moderate risk and for 3 out of 6 cases at low risk sites. Finally, sulphur had a positive influence on seed oil content of 4 out of 9 cases of moderate risk and no effect on the low risk sites.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
School of Agricultural, Forest and Food Sciences HAFL School of Agricultural, Forest and Food Sciences HAFL > Agriculture School of Agricultural, Forest and Food Sciences HAFL > Agriculture > Plant Production and Biodiversity |
Name: |
Pellet, Didier; Mercier, Edith; Ballestra, Ursula; Keiser, Andreas and Bezençon, Nicola |
Subjects: |
S Agriculture > S Agriculture (General) S Agriculture > SB Plant culture |
Publisher: |
Agroscope |
Language: |
French |
Submitter: |
Andreas Keiser |
Date Deposited: |
08 Feb 2021 14:32 |
Last Modified: |
24 Jan 2022 11:29 |
Uncontrolled Keywords: |
winter oilseed rape, sulphur deficiency, model, yield, S-fertilisation, oil content, glucosinolates, sulphur uptake |
ARBOR DOI: |
10.24451/arbor.14067 |
URI: |
https://arbor.bfh.ch/id/eprint/14067 |
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