ISSN:
1573-5036
Schlagwort(e):
glucosinolate content
;
N application
;
oilseed rape
;
S application
;
S uptake
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
Notizen:
Abstract Sulphur (S) uptake and distribution in double low (Cobra) and single low (Bienvenu) winter oilseed rape were studied in field experiments at Cockle Park, Northumberland, at a site where the S supply was adequate. Total S uptake at maturity of between 80–100 kg ha-1 was similar in both varieties. Applications of S at a rate of 100 kg ha-1 increased S uptake by 10–15 kg ha-1. while applications of nitrogen (N) at a rate of 300 kg ha-1 increased S uptake by 29–34 kg ha-1. Sulphur distribution in the vegetative tissues varied little between the two varieties but the distribution within the pods differed significantly between the two varieties. In Bienvenu 65.8% of pod S was located in the seeds, while in Cobra 57.4 and 68.8% in the 1988–89 and 1989–90 seasons, respectively, was retained in the pod walls. The high S content of the seeds of Bienvenu was due to their high glucosinolate content, whereas the high content of S in the pod walls of Cobra was associated with the presence of free SO4 2-, which accounted for 70.6 to 89.4% of total S in the pod walls. The percentages of total plant S present in the pods were significantly increased by N applications and slightly decreased by S applications.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00779177
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