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Impact of different nitrogen fertilizers and an additional sulfur supply on grain yield, quality, and the potential of acrylamide formation in winter wheat
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Titel: |
Impact of different nitrogen fertilizers and an additional sulfur supply on grain yield, quality, and the potential of acrylamide formation in winter wheat |
In: | Journal of Plant Nutrition and Soil Science, 171, 2008, 4, S. 643-655 |
veröffentlicht: |
Wiley
|
Umfang: | 643-655 |
ISSN: |
1436-8730 1522-2624 |
DOI: | 10.1002/jpln.200700229 |
Zusammenfassung: | <jats:title>Abstract</jats:title><jats:p>The amino acid asparagine (Asn) plays a key role in acrylamide (AA) formation in strongly heated cereal foodstuffs. The influence of different nitrogen (N) fertilizers (calcium ammonium nitrate, CAN; urea ammonium sulfate solution, UAS, applied according to the CULTAN method; urea; urea ammonium nitrate, UAN; ammonium nitrate sulfate containing the nitrification inhibitor 3,4‐dimethyl pyrazole phosphate, Entec 26<jats:sup>®</jats:sup>; and a combination of liquid manure and CAN) at a nitrogen level of 180 kg N ha<jats:sup>–1</jats:sup> and an additional sulfur (S) supply on grain yield, quality, Asn concentration, and the potential of AA formation of winter wheat were studied in a 2‐year field experiment. Grain yields varied between 61 und 104 dt ha<jats:sup>–1</jats:sup> dry matter depending on cultivar (cv), fertilization, and year. Quality demands concerning crude protein concentration and sedimentation value were reached when CAN, CAN+S, urea, or a combination of liquid manure and CAN were applied. Asparagine concentrations in flours varied from 2.6 to 13.6 mg per 100 g flour dry matter depending on cultivar, fertilization, and year. In both years, a close nonlinear correlation between crude protein concentration and the concentration of free Asn with <jats:italic>r</jats:italic>²<jats:sub>2004</jats:sub> = 0.93 and <jats:italic>r</jats:italic>²<jats:sub>2005</jats:sub> = 0.94 was observed. Nitrogen fertilizers leading to high crude protein concentrations caused significantly increased Asn concentrations. In both years, a correlation between the concentration of free Asn and the potential of AA formation with <jats:italic>r</jats:italic>²<jats:sub>2004 </jats:sub>= 0.72 and <jats:italic>r</jats:italic>²<jats:sub>2005 </jats:sub>= 0.84 was found. The application of S (CAN compared to CAN+S) had no beneficial effect on the Asn concentration and the potential of AA formation, most likely because S concentration in grains was sufficient even without additional S supply.</jats:p> |
Format: | E-Article |
Quelle: | Wiley (CrossRef) |
Sprache: | Englisch |