Definition English:
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1. Flow of liquids through a porous media. 2. Leaching: Physical-chemical process of washing rocks and soils by rainwater and irrigation, which causes the removal of nutrients such as potassium, calcium and nitrogen, making the soil poorer. Leaching is particularly important (and problematic) in soils lacking vegetation cover and / or with little mineral retention capacity. (Free translation from the original: Brasil. Ministério do Meio Ambiente, 2005) |