The objective of this study was to compare six soil tests (1 M KNO3, 1 M NH4OAC, 0.005 M DTPA, 0.1 M EDTA, 1 M HNO3 and 0.025 M Ca DTPA B4O7) as extractants for soil Pb and as predictors of plant available Pb for wheat (Triticum aestivum L.) in the greenhouse. The soils recieved 0, 200 and 400 mg Pb kg−1 as Pb(NO3)2 and are referred to as Pb0, Pb1 and Pb2 treatments respectively. Of the six soil extractants, 1 M HNO3 was the most effective extractant for Pb from Pb0 treatment whereas 0.1 M EDTA and 0.025 M Ca DTPA‐B4O7 were the best and equally effective in their ability to extract Pb from Pb1 and Pb2 treatments. Regression analysis was used to develop two variable models for predicting Pb uptake by wheat as a function of extractable Pb and selected soil properties. The 0.025 M Ca DTPA‐B4O7 extractant was the best in predicting uptake by wheat in Pb0 (r = 0.791*** significant at p = 0.001) and Pb1 (r = 0.726***) and Pb2 (r = 0.942***) treatments.
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