Abstract
High concentration of boron (B) and selenium (Se) found in the environment may be detrimental to the sustainability of agriculture in regions of the western USA. Boron and Se uptake by wild mustard (Brassica juncea (L Czern & Coss.) and tall fescue (Festuca arundinacea Schreb. L.) was investigated under greenhouse conditions in thermic typic torriorthent soils containing naturally high levels of B and Se. The design structure was a randomized complete block with six 18-L plots per treatment, three blocks, and two treatments. After plants were harvested and separated into shoots and roots, tissues were analyzed for total tissue B and Se, and soils from each pot were analyzed for residual B and Se. The highest concentrations of B were recovered in shoots from wild mustard and roots from tall fescue. Tissue Se concentrations were generally similar in both plant species. Post-harvest soil B and Se concentrations were significantly lowered irrespective of the plant species and of the harvest. The effectiveness of using wild mustard and tall fescue for B and Se soil reclamation will be discussed.
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