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

Kincl, David; Kabelka, David; Vopravil, Jan; Heřmanovská, Darina

doi:10.17221/114/2020-swr

Cited by 3 publications

(2 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At present, many researchers use the GIS and Remote Sensing techniques to explore and analyze the curve number method in a small watershed [16,17,21]. The CN values also could be verified using a rainfall simulator confirmed by the statistical tests [22,23].…”

Section: Soil Conservation Services and Curve Number (Scs-cn) Technique Also Known As The Natural Resourcesmentioning

confidence: 97%

Curve Number Estimation for Ungauged Watershed in Semi-Arid Region

et al. 2021

View full text Add to dashboard Cite

The Benanain Watershed is located in East Nusa Tenggara with an area of 3,181 km2 and is divided into 29 sub-watersheds. The East Nusa Tenggara itself is an eastern region of Indonesia with a unique climate condition called semi-arid. The high rainfall intensity occurring in short duration results in large surface runoff and erosion. Floods and erosion in semi-arid areas due to sensitive soils to drought and heavy rainfall extremely. This paper presents the application of the Soil Conservation Services-Curve Number (SCS-CN) real-flood flows through a digital map of soil type, land use, topography, and the heterogeneity of physical condition, especially for ungauged watersheds. The method used is an approach empirical to estimate runoff from the relationship between rainfall, land use, and soil hydrology groups. This watershed has a large area that must analyze every sub-watershed. The land-use of the Benanain watershed is secondary dryland forest by 44.26% and the hydrological soil group on the B group classification with medium to high absorption potential by 46.502% from the total area. The curve number value of the Benanain Watershed ranges from 56.54 to 73.90, where the mean CN value of 65.32. The rainfall (mm) for the 29 sub-watersheds in the Benanain Watershed has decreased by about 74.65% when being surface runoff or only 25.35% of water becomes surface runoff. The relationship between rainfall depth and CN is classified as standard response and trend line (flat slope) equilibrium occurs when rainfall depth value of 56.71 mm and CN is close to 66.30. The high variability of intense rainfall between the rainy season and the dry season had a significant influence on the curve number value in a large watershed area. Further analysis will be more accurate if it is supported by long rainfall data and observation runoff data as a control. Doi: 10.28991/cej-2021-03091711 Full Text: PDF

show abstract

Section: Soil Conservation Services and Curve Number (Scs-cn) Technique Also Known As The Natural Resourcesmentioning

confidence: 97%

Curve Number Estimation for Ungauged Watershed in Semi-Arid Region

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Measurements. The used field rainfall simulator (the rainfall simulation area = 21 m, with a rainfall https://doi.org/10.17221/36/2022-SWR intensity of 1.2 mm/min) plus the principles of measurement are described in different publications (e.g., Kabelka et al 2019Kabelka et al , 2021Kincl et al 2021). All the rainfall simulations were performed twice consecutively (the first measurement = 30 min of simulated rainfall on the soil with natural moisture; after a 15 min technological break, a second rainfall simulation for 15 min was performed on the same saturated soil).…”

Section: Methodsmentioning

confidence: 99%

Soil-conservation effect of intercrops in silage maize

Kincl¹,

Formánek²,

Vopravil³

et al. 2022

Soil & Water Res.

Self Cite

View full text Add to dashboard Cite

More than 50% of agricultural land is threatened by water erosion in the Czech Republic. With respect to soil erosion, maize (Zea mays L.) belongs to the most problematic crops; one of the possibilities to increase protection against erosion is intercropping. In this study, we attempted to find out the effects of individual intercrops and their mixtures (sown 4–6 weeks after sowing maize) or a mixed culture (maize plus lupine) on the soil losses and surface runoff in the period 2019–2021. The study was realised in a sugar beet growing region (Haplic Luvisol); a field rainfall simulator was used. From the used variants with Lolium perenne L., Trifolium repens L., Vicia villosa Roth, Lolium multiflorum Lam., Festuca arundinacea Schreb., Triticum aestivum L. or a mixture (Vicia villosa plus a Trifolium hybrid diploid), the variants with Lolium perenne, Lolium multiflorum, Vicia villosa or Vicia villosa plus the Trifolium hybrid diploid, established between the maize rows (hybrid maize, cultivar Walterinio) on May 27, were the most efficient in case of both the soil losses and runoff reductions in the year 2019. For example, Triticum aestivum between the maize rows mostly reduced the soil losses and the surface runoff was similar (or higher) compared with the control (maize without any intercrop). The variant with Trifolium repens had mostly higher (or similar) soil loss values (compared with the control); in this variant, the runoff was lower compared with the control. We proved our hypothesis with regards to the higher reduction in the soil losses than with the runoff in the variant with Lolium perenne. The results from the years 2020 (the used variants with Lolium multiflorum, Secale cereale L., Trifolium incarnatum L., Phacelia tanacetifolia Benth., Lolium multiflorum plus Trifolium incarnatum, Lolium multiflorum plus Vicia pannonica Crantz) and 2021 (the variants with Lolium multiflorum, Lolium multiflorum – early sowing, Secale cereale, Trifolium incarnatum, Phacelia tanacetifolia, Lolium multiflorum plus Trifolium incarnatum, a mixed culture = maize plus Lupinus albus L.) showed the variants with Trifolium incarnatum, the mixture (Lolium multiflorum plus Trifolium incarnatum), Phacelia tanacetifolia (in the year 2020) or the mixture (Lolium multiflorum plus Trifolium incarnatum) and a mixed culture (maize plus Lupinus albus) (2021) had the most positive effect – the soil loss and surface runoff values were lower when the maize was > 2 m compared with the maize < 1 m. The results obtained in the period 2019–2021 showed the grasses were the most efficient in decreasing the soil losses when the maize was < 1 m and when the maize was > 2 m with the used mixtures.

show abstract

Different technologies of potato (Solanum tuberosum L.) cultivation and their effects on water runoff and soil erosion

Záruba,

Formánek,

Kincl

et al. 2023

PLANT SOIL ENVIRON

Self Cite

View full text Add to dashboard Cite

More than 50% of agricultural land is threatened by water erosion (and approximately 10% by wind erosion) in the Czech Republic; also, 5-10% of forest soils are damaged by water erosion etc. For example, healthy forests usually protect soils from erosion; the network of forest roads, including skid trails, was shown to alter hydrological processes and cause soil erosion by water (Zemke 2016). Concerning soil erosion, the cultivation of potatoes is problematic. Potato cultivation may lead to water and wind (and tillage and harvest) erosion (e.g.,

show abstract

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

Cited by 3 publications

References 13 publications

Curve Number Estimation for Ungauged Watershed in Semi-Arid Region

Curve Number Estimation for Ungauged Watershed in Semi-Arid Region

Soil-conservation effect of intercrops in silage maize

Different technologies of potato (Solanum tuberosum L.) cultivation and their effects on water runoff and soil erosion

Contact Info

Product

Resources

About