A grey or light-coloured 'E' horizon is the result of severe leaching, or eluviation, which washes out everything but quartz grains. Eluviation is the removal of soil, clay, silt or fine organic ...

Researchers from Teagasc investigated the effect of including ribwort plantain with grass-clover for reducing nitrate leaching across a range of Irish soil types. The two-year, five-soil study ...