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Yield, nutrient concentration and quality of mustard crops as influenced by nitrogen and sulphur fertilizers

Published online by Cambridge University Press:  27 March 2009

M. S. Aulakh ,
N. S. Pasricha  and
N. S. Sahota
M. S. Aulakh
Affiliation:
Department of Soils, Punjab Agricultural University, Ludhiana, India
N. S. Pasricha
Affiliation:
Department of Soils, Punjab Agricultural University, Ludhiana, India
N. S. Sahota
Affiliation:
Department of Soils, Punjab Agricultural University, Ludhiana, India
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Summary

Field experiments were made for 3 years (1975–8) on soils deficient in both available N and S to test the effects of these nutrients applied as fertilizers on yellow mustard (Brassica campestris L.) and mustard (Brassica juncea L.).

In all the 3 years, grain yield of both mustard crops significantly increased with increased N rates. The grain response to added S was not consistently significant, however; maximum yields were obtained only when high rates of N and S were applied together. N and S fertilizer significantly increased the concentration and uptake (kg/ha) of N and S in grain, and there was a significant positive N × S interaction. Adequate N/S ratio appears to be 7·5:1 or less for the grain of these mustard crops. Protein content of grain improved markedly with applied N and S. Application of 60 kg S/ha increased the oil content by 12% in yellow mustard and 16% in mustard. Although N had little effect on percentage oil, total oil production increased many fold. The combined application of N and S had the largest effect in determining the concentration and uptake of N and S, and on protein and oil content in grain. This study indicated that additions of 60 kg S/ha to mustard crops receiving adequate fertilizer N are likely to improve their yield and quality.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 94 , Issue 3 , June 1980 , pp. 545 - 549
Copyright
Copyright © Cambridge University Press 1980

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References

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