Effect of cover crops on water and soil losses due to hydric erosion
The objective of this work was to evaluate the effect of the inclusion of a cover crop (CC) in a soybean-soybean sequence, on the losses of water and soil produced by water erosion in different environments of an eroded soil. The experiment was developed on a typical Argiudol soil, with a divided pl...
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| Autores principales: | , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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CURIHAM: Centro Universitario Rosario de Investigaciones Hidroambientales Facultad de Ciencias Exactas, Ingeniería y Agrimensura. Universidad Nacional de Rosario Director: Dr. Ing. Hernán Stenta Riobamba 245 bis, 2000 Rosario (Santa Fe), Argentina. Telefa
2020
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| Acceso en línea: | https://cuadernosdelcuriham.unr.edu.ar/index.php/CURIHAM/article/view/147 |
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| Sumario: | The objective of this work was to evaluate the effect of the inclusion of a cover crop (CC) in a soybean-soybean sequence, on the losses of water and soil produced by water erosion in different environments of an eroded soil. The experiment was developed on a typical Argiudol soil, with a divided plot design, where the largest plots were the environments of the experimental site, differentiated by their topography in: Hump (average slope 0.15%), Half hump (average slope 0.9%) and Low (mean slope <0.1%) and the smaller plots corresponded to the treatment sub-factor, with two levels: CCC (with cover crops) and SCC (without cover crops) based on a mixture oats (Avena sativa L.) and vicia (Vicia sativa L.). The dry matter production (DM) of the CC was obtained and simulated rains were applied in each plot, at a constant intensity of 60 mm.h-1 and a duration of 1 h, in pre-flowering of the successor soybean crop. In each plot, after the simulated rain, the total loss of water in mm (l.m2) was recorded and the respective percentage of the total applied rain was calculated. Before applying the simulated rains, the vegetation cover (%) and the surface roughness in mm (RR) were evaluated. Total soil loss was measured for each rain in g.m-2. Surface coverage and RR increased significantly due to the inclusion of CC. The total water losses due to surface and soil runoff in Hump, Half hump and Low CCC were significantly lower in SCC. The water erosion processes were mitigated by the CC through the increase in surface coverage and roughness. |
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