Soil losses in different cropping systems thought simulated rain in volumetric lysimiters
DOI:
https://doi.org/10.18316/1981-8858.16.33Keywords:
Rain Drop Energy, Erosivity, Runoff, Agriculture, Management.Abstract
Sediment production by the rain drop impact and transport caused by runoff have direct consequences on the quality and fertility of soils. Volumetric lysimeters and rain simulators have been used to understand soil erosion. This study aimed to evaluate processes of sediment production and transportation on three types of soil management (no-tillage, conventional tillage and conservation tillage) from simulated rainfall conditions and volumetric lysimeters in Pejuçara - RS, Brazil. The rain erosivity presented high correlation (0.97) with kinetic energy of the rain drops. The conservation tillage presented the lowest concentration of sediments (0.18 to 0.37 mg L-1) and lowest soil loss (0.12 kg ha-1). No-tillage presented 0.35 to 0.91 mg L-1concentration of sediments and 0.25 kg ha-1soil loss. Conventional tillage showed greater sediment concentration (1,82 a 5,59 mg L-1) and soils losses (2,75 kg ha-1).
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