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Spinach and pepper response to nitrogen and sulphur fertilization

Author

Listed:
  • M. Smatanová

    (Central Institute for Supervising and Testing in Agriculture in Brno, Czech Republic)

  • R. Richter

    (Central Institute for Supervising and Testing in Agriculture in Brno, Czech Republic)

  • J. Hlušek

    (Central Institute for Supervising and Testing in Agriculture in Brno, Czech Republic)

Abstract

A vegetation pot experiment was established to explore the effect of two doses of nitrogen (0.6 and 0.9 gN in the form of ammonium sulphate) and two doses of sulphur (20.6 and 30.6 mg/kg of soil) on the yields and quality of spinach and pepper in comparison with a natural level (7.85 mg/kg). The results of the experiments confirmed that the application of sulphur by means of (NH4)2SO4 in combination with nitrogen had a positive effect on yields and also on the quality of the vegetables. In the sulphur-free variants of spinach the effect was statistically significant and also when the levels of S in the soil were higher. Lower doses of nitrogen under increased levels of sulphur increased the yields statistically significantly (on average by 47%) and the sulphur concentration in the plants increased. The N:S ratio became narrower in proportion with the level of sulphur, particularly under a lower N level. The nitrate content in spinach corresponded with the applied dose of nitrogen and the nitrogen concentration. The sulphur level did not influence the content of C vitamin, but had a positive effect on the content of the essential amino acids cysteine and methionine. A mean level of S1 in combination with a N1 dose significantly increased pepper yields, narrowed the N:S ratio and was reflected in dry matter production per 1 g of N. The highest pepper yields were achieved with a dose of S1, which resulted in the highest dry matter production in the fruit per1 g of N under both levels of N. At the same time increasing the sulphur level reduced the content of nitrate and increased the level of cysteine from 0.11 to 0.305 g/kg.

Suggested Citation

  • M. Smatanová & R. Richter & J. Hlušek, 2004. "Spinach and pepper response to nitrogen and sulphur fertilization," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 50(7), pages 303-308.
  • Handle: RePEc:caa:jnlpse:v:50:y:2004:i:7:id:4036-pse
    DOI: 10.17221/4036-PSE
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    Cited by:

    1. T. Lošák & J. Hlušek & T. Válka & J. Elbl & T. Vítěz & H. Bělíková & E. Von Bennewitz, 2016. "The effect of fertilisation with digestate on kohlrabi yields and quality," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 62(6), pages 274-278.

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