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| Format: | Artículo científico |
| Language: | en |
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Universidade Estadual de Maringá
2012
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| Online Access: | https://www.redalyc.org/articulo.oa?id=303025342001 |
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Table of Contents:
- Comparative analysis of the performance of mixed terraces and level and graded terraces Josiane Rosa Silva de Oliveira Fernando Falco Pruski José Márcio Alves da Silva Danilo Paulúcio da Silva Agrociencias Terraces control of water erosion soil and water conservation The terracing of agricultural land is the most widespread mechanical practice used among farmers in the control of water erosion. The objective of this paper was to carry out a comparative analysis between mixed terraces and level and graded terraces. The dimensioning of level terraces was carried out based on the surface runoff volume, while the graded terrace dimensions were based on the maximum runoff flow rate. For the mixed terraces, the dimensioning was carried by considering two surface runoff hydrographs, one for the determination of the terrace channel capacity and another to estimate the flow rate at the extremity of the terrace channel. Therefore, in order to contain and transport the excess volume, an additional value was calculated and added to the depth of the channel. A case study was performed for the Uberaba, Minas Gerais State (Brazil) rainfall conditions, considering events with return periods of 10, 30, and 50 years. The obtained results provided quantitative evidence that mixed terraces have a lower height than level terraces and a higher level than the graded terraces, resulting in direct consequences for the soil movement for the terrace construction. 2012 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303025342001 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.4 Vol.34