Eriksen, J (2001) Effects of timing of sulfur application and nitrogen fertilization on yield and quality of barley. In: Book of abstracts from COST Action 829 meeting Sulfur-Nitrogen Interactions in Plants.
The effect of S and N application on the redistribution of S and the effect of N application and time of S application (from sowing to the middle of heading) on yield and quality of spring barley (Hordeum vulgare L.) was investigated in pot experiments. Nitrogen and sulphur had a clear interactive effect on the yield of all plant parts with little or no effect of S at low N application rates and similar low effect of N without S application. About 70% of leaf N was redistributed to the ears in plants growing at adequate S supply compared with about 35% of leaf N in S-deficient plants. The proportion of ear N and S originating from the redistribution of leaf N and S was 49% and 23%, respectively.
Deficiency symptoms were observed already at the beginning of tillering at the highest levels of N application and the number of ears per plant clearly decreased by delayed S application. Sulphur applied when the flag leaf was first visible compensated for this and prevented yield reductions. The higher the N levels, the earlier S had to be applied for yield reductions to be avoided. The contents of the S-containing amino acids cysteine and methionine increased when S was applied later than at sowing. Sulphur application had a relatively higher impact on grain quality than on dry matter yield and this was more so the later the application occurred.
|EPrint Type:||Conference paper, poster, etc.|
|Type of presentation:||Paper|
|Subjects:||Soil > Nutrient turnover|
|Research affiliation:||Denmark > DARCOF II (2000-2005) > I.10 (VegCatch) Organic vegetable cultivation methods and use of catch crops|
|Deposited By:||Eriksen, Senior scientist Jørgen|
|Deposited On:||22 Nov 2002|
|Last Modified:||12 Apr 2010 07:27|
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