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Estimating the curve number for conventional and soil conservation technologies using a rainfall simulator

Author

Listed:
  • David Kincl

    (Department of Pedology and Soil Conservation, Research Institute for Soil and Water Conservation, Prague-Zbraslav, Czech Republic
    Department of Land Use and Improvement, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • David Kabelka

    (Department of Pedology and Soil Conservation, Research Institute for Soil and Water Conservation, Prague-Zbraslav, Czech Republic)

  • Jan Vopravil

    (Department of Pedology and Soil Conservation, Research Institute for Soil and Water Conservation, Prague-Zbraslav, Czech Republic
    Department of Land Use and Improvement, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Darina Heřmanovská

    (Department of Pedology and Soil Conservation, Research Institute for Soil and Water Conservation, Prague-Zbraslav, Czech Republic)

Abstract

The aim of the article was to verify the curve number (CN) values given in the National Engineering Handbook (NEH) methodology, whether they really correspond to all wide-row crops. The tested crops were maize, hops and potatoes grown using conventional and soil conservation technologies. All these crops are classified as wide-row crops, but they are very different in terms of the cultivation process. The basis for the calculation of our CN values were field measurements carried out using a rainfall simulator within the time span from 2014 to 2020 on the soil corresponding to hydrological group B in two repetitions: naturally dry soil corresponding to an ARC II curve and saturated soil corresponding to an ARC III curve. The results show that our calculated CN values for the conventional cultivation of wide-row crops are, in principle, the same as the CN values given in the NEH methodology. On the contrary, a certain difference was recorded in the soil conservation technologies with plant residues on the surface, in the case of naturally dry soil. Lower CN values are clearly seen in the technologies of no-till maize, strip-till maize and hops with catch crops, which was confirmed by the statistical tests, probably due to the interception and surface roughness.

Suggested Citation

  • David Kincl & David Kabelka & Jan Vopravil & Darina Heřmanovská, 2021. "Estimating the curve number for conventional and soil conservation technologies using a rainfall simulator," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 16(2), pages 95-102.
    • Handle: RePEc:caa:jnlswr:v:16:y:2021:i:2:id:114-2020-swr
    DOI: 10.17221/114/2020-SWR
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    References listed on IDEAS

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    1. Mohamed Elhakeem & Athanasios Papanicolaou, 2009. "Estimation of the Runoff Curve Number via Direct Rainfall Simulator Measurements in the State of Iowa, USA," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 23(12), pages 2455-2473, September.
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    Cited by:

    1. David Kincl & Pavel Formánek & Jan Vopravil & Pavel Nerušil & Ladislav Menšík & Jaroslava Janků, 2022. "Soil-conservation effect of intercrops in silage maize," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 17(3), pages 180-190.
    2. Jiří Záruba & Pavel Formánek & David Kincl & Jan Vopravil & Helena Kusá & Pavel Růžek & David Kabelka & Pavel Kasal, 2023. "Different technologies of potato (Solanum tuberosum L.) cultivation and their effects on water runoff and soil erosion," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 69(5), pages 238-246.

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