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Effect of conditions of locality, variety and fertilization on the content of ascorbic acid in potato tubers

Author

Listed:
  • K. Hamouz

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic)

  • J. Lachman

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic)

  • P. Dvořák

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic)

  • O. Dušková

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Czech Republic)

  • M. Čížek

    (Potato Research Institute, Havlíčkův Brod, Czech Republic)

Abstract

The effect of conditions of locality, variety and fertilization on ascorbic acid (AA) content in potato tubers was investigated in precise field trials in 2004 and 2005 in the Czech Republic. From four localities and in the two-year average the highest AA was statistically determined in the locality of Prerov nad Labem with the highest average temperature values during both experimental years (by 6.7 to 11.5% higher in comparison to other localities). Similarly, the effect of variety was also very significant; Marabel variety had the highest AA content (207.2 mg/kg fw) and exceeded other seven varieties by 15-49%. A negative effect on AA content in tubers was observed in the case of an increased intensity of N fertilization (at 180 kg N/ha AA decrease was lower by 6.1% compared to doses 100 kg N/ha). On the contrary, a favourable effect was determined at increased levels of potassium and magnesium fertilization (at 166 kg K/ha and 60 kg Mg/ha AA increase was by 6.2% higher compared to the levels of 108 kg K/ha and 30 kg Mg/ha).

Suggested Citation

  • K. Hamouz & J. Lachman & P. Dvořák & O. Dušková & M. Čížek, 2007. "Effect of conditions of locality, variety and fertilization on the content of ascorbic acid in potato tubers," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 53(6), pages 252-257.
    • Handle: RePEc:caa:jnlpse:v:53:y:2007:i:6:id:2217-pse
    DOI: 10.17221/2217-PSE
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    References listed on IDEAS

    as
    1. K. Hamouz & J. Lachman & P. Dvořák & M. Jůzl & V. Pivec, 2006. "The effect of site conditions, variety and fertilization on the content of polyphenolsin potato tubers," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 52(9), pages 407-412.
    2. R. Jabłońska-Ceglarek & W. Wadas, 2005. "Effect of nonwoven polypropylene covers on early tuber yield of potato crops," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 51(5), pages 226-231.
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    Citations

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    Cited by:

    1. Karel HAMOUZ & David BEČKA & Ivana CAPOUCHOVÁ, 2018. "Ascorbic acid content in potato tubers with coloured flesh as affected by genotype, environment and storage," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 64(12), pages 605-611.
    2. J. Lachman & K. Hamouz & M. Šulc & M. Orsák & P. Dvořák, 2008. "Differences in phenolic content and antioxidant activity in yellow and purple-fleshed potatoes grown in the Czech Republic," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 54(1), pages 1-6.

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