Tob. Sci., 1991, 35, p. 45-8., ISSN.0082-4623
Comparison of extractants for estimating heavy metal availability in mid-Atlantic coastal plain soils
University of Maryland, Maryland Agricultural Experiment Station, Dept. of Agronomy, 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 HCl + 0.025 NH2SO4), and Mehlich 3- for estimating labile Zn, Cu, Mn, Pb, Ni, and Cd in Coastal Plain tobacco soils in Maryland was ...