Soil Science · 1937 · 56 citations · 0 references
AgricultureAgronomyPlant SciencesSoil ChemistrySoil FertilitySoil ScienceNutrient AvailabilityPlant Nutrient UptakePlant-soil Nutrient InteractionsSoil Nutrient AvailabilitySoil-plant InteractionsSoil-plant Nutrient RelationsBarley Nutrient UptakeBarley Root BiologyLead PollutionLead Toxicity In Soil
Evidence is shown by the results obtained in this study that because of the high fixing power of the soils used, large quantities of lead could be added without harmful effects. When amounts at the rate of 7190 pounds of lead carbonate per acre were used, no detrimental effects on the growth of barley were observed. The tendency was for the growth of barley to be stimulated by minute quantities of soluble lead in the soil. A relationship appears to exist between the growth stimulation and the soluble lead content of the soil, with a tendency for maximum stimulation to occur when the concentration of soluble lead ranges between 0.1 to 0.4 p.p.m. PbO. Lead was found in the plants in both tops and roots, the concentration in the latter notably higher than in the tops. The tendency of the plants was to absorb greater quantities of lead with increasing concentrations of soluble lead in the soil. 18 references, 5 figures, 6 tables.