Acidification of soil - potential of mobility of phosphorus, potassium, cadmium and lead
2000
Kanianska, R. | Makovnikova, J. (Vyskumny Ustav Podoznalectva a Ochrany Pody, Bratislava (Slovak Republic))
In the frame of pot experiment, with grown plant of spring barley, the influence of simulated acid load on mobility of potassium, phosphorus, cadmium and lead was studied. Two treatments of watering were applied in the experiment: treatment a - watering with distilled water of pH 5.4, treatment b - watering with acid solution of pH 2.5. Four different textures were used as a material: Eutric Fluvisol, Dystric Planosol, Dystric Cambisol, Ferrohumic Podzol. Acid load caused on the agricultural soils decrease of available phosphorus content in the range from 14.0 to 43.8% of initial values (Dystric Cambisol 43.8%, Dystric Planosol 26.0%, Eutric Fluvisol 14.0%). Decrease of available potassium content on treatment a was moderatly, in the range from 10.6 to 19.6% of initial values (Dystric Planosol 19.6%, Dystric Cambisol 18.0 %, Eutric Fluvisol 10.6%). In the forest soil Ferrohumic Podzol was recorded increase of both available nutrient. Acidification induced in the observed soils increase of cadmium mobile fraction in the range from 1.0 to 40.9% of initial values (Eutric Fluvisol 40.9%, Ferro-humic Podzol 29.6%, Dystric Planosol 1.2%, Dystric Cambisol 1.0%) and increase of lead mobile fraction in the range from 29.0 to 52.0% of initial values (Dystric Planosol 52.0%, Dystric Cambisol 34.0%, Eutric Fluvisol 31.0%, Ferro-humic Podzol 29.0%). The increase of cadmium and lead mobile fraction reflected in the higher heavy metals transfer to the plant - spring barley
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