Tob. Sci., 1991, 35-10, p. 43-48, ISSN. 0082-4523
Comparison of extractants for estimating heavy metal availability in mid-Atlantic coastal plain soils
Dept of Agronomy, University of Maryland, College Park, MD, USA
The effectiveness of four soil extractants - diethylene triamine pentacetic acid (DTPA) at pH 7.3 and 5.3, Mehlich 1 (0.05 N HCI + 0.025 N H2SO4), and Mehlich 3 - for estimating labile Zn, Cu, Mn, Pb, Ni, and Cd in Coastal Plain tobacco soils in...