caa a22 4500 477110150 CHVBK 20180405111606.0 cr unu---uuuuu 170330e19960401xx s 000 0 eng 10.1007/BF00012055 doi (NATIONALLICENCE)springer-10.1007/BF00012055 137Cs uptake in spring wheat ( Triticum aestivum L.cv. Tonic) at varying K supply [Elektronische Daten] II. A potted soil experiment [E. Smolders, L. Kiebooms, J. Buysse, R. Merckx] Spring wheat (Triticum aestivum L. cv. Tonic) was grown for 16 days in a sandy loam soil which was contaminated with 137Cs. The soil was fertilised with K at three rates (0,1 and 2 mmol K per 950 g dry soil) and with NO3 --N at two rates (0 and 2 mmol per 950 g dry soil) in a factorial design. The 137Cs Activity Concentration (AC) in the shoot tissue significantly reduced 8.2-fold (nil N treatment, p<0.001) and 9.3-fold (highest N dose, p<0.001) with increasing K supply. In contrast, the K application increased the 137Cs AC in soil solution 1.7 fold (nil N treatment) or had no significant effect (highest N dose). At similar K application, the application of N increased the 137Cs AC in the shoot compared to the control. This effect is most probably due to the increased NH4 + concentration in soil solution which increased the 137Cs AC in soil solution. The soil solution composition (137Cs and K concentration) in the rhizosphere was estimated from the average soil solution composition at day 16 and solute transport calculations. The 137Cs AC in the shoot tissue was predicted from the estimated soil solution composition in the rhizosphere and the relationship between K concentration and 137Cs uptake derived from a nutrient solution experiment. The predictions of 137Cs AC's in the shoot are qualitatively correct for the fertiliser effects but underestimate the observations between 1.4 and 9.9 fold. Kluwer Academic Publishers, 1996 countermeasures nationallicence 137Cs availability nationallicence K availability nationallicence rhizosphere nationallicence Triticum aestivum L. cv. Tonic nationallicence Smolders E. Laboratory of Soil Fertility and Soil Biology, Department of Land Management, Faculty of Applied Biological and Agricultural Sciences, K.U. Leuven, K. Mercierlaan 92, B-3001, Belgium aut Kiebooms L. Laboratory of Soil Fertility and Soil Biology, Department of Land Management, Faculty of Applied Biological and Agricultural Sciences, K.U. Leuven, K. Mercierlaan 92, B-3001, Belgium aut Buysse J. Laboratory of Soil Fertility and Soil Biology, Department of Land Management, Faculty of Applied Biological and Agricultural Sciences, K.U. Leuven, K. Mercierlaan 92, B-3001, Belgium aut Merckx R. Laboratory of Soil Fertility and Soil Biology, Department of Land Management, Faculty of Applied Biological and Agricultural Sciences, K.U. Leuven, K. Mercierlaan 92, B-3001, Belgium aut Plant and Soil Kluwer Academic Publishers; http://www.wkap.nl 181/2(1996-04-01), 211-220 0032-079X 181:2<211 1996 181 11104 https://doi.org/10.1007/BF00012055 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00012055 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Smolders E. Laboratory of Soil Fertility and Soil Biology, Department of Land Management, Faculty of Applied Biological and Agricultural Sciences, K.U. Leuven, K. Mercierlaan 92, B-3001, Belgium aut NATIONALLICENCE 700 1- Kiebooms L. Laboratory of Soil Fertility and Soil Biology, Department of Land Management, Faculty of Applied Biological and Agricultural Sciences, K.U. Leuven, K. Mercierlaan 92, B-3001, Belgium aut NATIONALLICENCE 700 1- Buysse J. Laboratory of Soil Fertility and Soil Biology, Department of Land Management, Faculty of Applied Biological and Agricultural Sciences, K.U. Leuven, K. Mercierlaan 92, B-3001, Belgium aut NATIONALLICENCE 700 1- Merckx R. Laboratory of Soil Fertility and Soil Biology, Department of Land Management, Faculty of Applied Biological and Agricultural Sciences, K.U. Leuven, K. Mercierlaan 92, B-3001, Belgium aut NATIONALLICENCE 773 0- Plant and Soil Kluwer Academic Publishers; http://www.wkap.nl 181/2(1996-04-01), 211-220 0032-079X 181:2<211 1996 181 11104 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 477110126 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer